{
 "aliases": [
  {
   "relation": "exact",
   "review_state": "source",
   "source_entity_id": "55818",
   "source_ref": "pudl-plants"
  },
  {
   "kind": "display_name",
   "note": "operator name for the plant",
   "relation": "exact",
   "review_state": "reviewed",
   "reviewed_on": "2026-09-18",
   "source_entity_id": "Frederickson 1 Generating Station",
   "source_ref": "curated-aliases",
   "source_url": "https://www.capitalpower.com/operations/frederickson/"
  }
 ],
 "citation_path": "citations/plant~eia~55818.html",
 "context": {
  "nearby_bpa_lines": [
   {
    "distance_km": 0.7,
    "id": "line:bpa:CHEH-COVI-1",
    "name": "Chehalis-Covington No 1",
    "source_ref": "bpa-lines",
    "type": "line",
    "voltage_class": "230",
    "voltage_kv": 230.0
   },
   {
    "distance_km": 0.71,
    "id": "line:bpa:COWTT-CHCO-1",
    "name": "Cowlitz Tap to Chehalis-Covington No 1",
    "source_ref": "bpa-lines",
    "type": "line",
    "voltage_class": "230",
    "voltage_kv": 230.0
   },
   {
    "distance_km": 0.74,
    "id": "line:bpa:STAC-WHRV-1",
    "name": "South Tacoma-White River No 1",
    "source_ref": "bpa-lines",
    "type": "line",
    "voltage_class": "230",
    "voltage_kv": 230.0
   },
   {
    "distance_km": 0.74,
    "id": "line:bpa:STCR-STAC-1",
    "name": "St Clair-South Tacoma No 1",
    "source_ref": "bpa-lines",
    "type": "line",
    "voltage_class": "230",
    "voltage_kv": 230.0
   },
   {
    "distance_km": 0.79,
    "id": "line:bpa:STAC-CANY-1",
    "name": "South Tacoma-Canyon No 1",
    "source_ref": "bpa-lines",
    "type": "line",
    "voltage_class": "230",
    "voltage_kv": 230.0
   },
   {
    "distance_km": 0.84,
    "id": "line:bpa:STAC-SOWT-1",
    "name": "South Tacoma-Southwest No 1",
    "source_ref": "bpa-lines",
    "type": "line",
    "voltage_class": "230",
    "voltage_kv": 230.0
   },
   {
    "distance_km": 2.78,
    "id": "line:bpa:FRZHT-COCA12",
    "name": "Franz Holmes Tap to Cowlitz-Canyon No 1,2",
    "source_ref": "bpa-lines",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   }
  ],
  "nearby_bpa_lines_status": {
   "available": true,
   "method": "Planar distance in the CONUS Albers projection (EPSG:5070) from the reported plant point to the published geometry, within about 1% in the region; features within 3 km, nearest first. Context only: nearness is not an electrical connection.",
   "note": "nearby_lines holds BPA's published lines and HIFLD-compiled lines of other owners (source_ref on each row); nearby_bpa_lines is the BPA subset; substations are HIFLD 2022 points at 100 kV and above",
   "radius_km": 3.0,
   "reason": null
  },
  "nearby_lines": [
   {
    "distance_km": 0.29,
    "id": "line:hifld:205753",
    "name": "CITY OF TACOMA - (WA) line 205753",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 0.3,
    "id": "line:hifld:205544",
    "name": "CITY OF TACOMA - (WA) line 205544",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 0.49,
    "id": "line:hifld:205518",
    "name": "PUGET SOUND ENERGY INC line 205518",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 0.5,
    "id": "line:hifld:205553",
    "name": "PUGET SOUND ENERGY INC line 205553",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 0.53,
    "id": "line:hifld:205554",
    "name": "PUGET SOUND ENERGY INC line 205554",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 0.61,
    "id": "line:hifld:206620",
    "name": "CITY OF TACOMA - (WA) line 206620",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 0.61,
    "id": "line:hifld:206915",
    "name": "CITY OF TACOMA - (WA) line 206915",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 0.64,
    "id": "line:hifld:205539",
    "name": "ELMHURST MUTUAL POWER & LIGHT CO line 205539",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 0.64,
    "id": "line:hifld:205542",
    "name": "CITY OF TACOMA - (WA) line 205542",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 0.7,
    "id": "line:bpa:CHEH-COVI-1",
    "name": "Chehalis-Covington No 1",
    "source_ref": "bpa-lines",
    "type": "line",
    "voltage_class": "230",
    "voltage_kv": 230.0
   },
   {
    "distance_km": 0.71,
    "id": "line:bpa:COWTT-CHCO-1",
    "name": "Cowlitz Tap to Chehalis-Covington No 1",
    "source_ref": "bpa-lines",
    "type": "line",
    "voltage_class": "230",
    "voltage_kv": 230.0
   },
   {
    "distance_km": 0.74,
    "id": "line:bpa:STAC-WHRV-1",
    "name": "South Tacoma-White River No 1",
    "source_ref": "bpa-lines",
    "type": "line",
    "voltage_class": "230",
    "voltage_kv": 230.0
   },
   {
    "distance_km": 0.74,
    "id": "line:bpa:STCR-STAC-1",
    "name": "St Clair-South Tacoma No 1",
    "source_ref": "bpa-lines",
    "type": "line",
    "voltage_class": "230",
    "voltage_kv": 230.0
   },
   {
    "distance_km": 0.79,
    "id": "line:bpa:STAC-CANY-1",
    "name": "South Tacoma-Canyon No 1",
    "source_ref": "bpa-lines",
    "type": "line",
    "voltage_class": "230",
    "voltage_kv": 230.0
   },
   {
    "distance_km": 0.84,
    "id": "line:bpa:STAC-SOWT-1",
    "name": "South Tacoma-Southwest No 1",
    "source_ref": "bpa-lines",
    "type": "line",
    "voltage_class": "230",
    "voltage_kv": 230.0
   },
   {
    "distance_km": 1.05,
    "id": "line:hifld:211042",
    "name": "PUGET SOUND ENERGY INC line 211042",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 1.19,
    "id": "line:hifld:205547",
    "name": "CITY OF TACOMA - (WA) line 205547",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 1.19,
    "id": "line:hifld:205545",
    "name": "CITY OF TACOMA - (WA) line 205545",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 1.19,
    "id": "line:hifld:205546",
    "name": "CITY OF TACOMA - (WA) line 205546",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 1.21,
    "id": "line:hifld:205548",
    "name": "CITY OF TACOMA - (WA) line 205548",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 2.77,
    "id": "line:hifld:205536",
    "name": "ELMHURST MUTUAL POWER & LIGHT CO line 205536",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 2.78,
    "id": "line:bpa:FRZHT-COCA12",
    "name": "Franz Holmes Tap to Cowlitz-Canyon No 1,2",
    "source_ref": "bpa-lines",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   }
  ],
  "nearby_substations": [
   {
    "distance_km": 0.1,
    "id": "substation:hifld:200891",
    "kind": "SUBSTATION",
    "max_kv": 230.0,
    "name": "Unnamed substation",
    "source_ref": "hifld-substations-2022",
    "type": "substation"
   },
   {
    "distance_km": 0.61,
    "id": "substation:hifld:200892",
    "kind": "SUBSTATION",
    "max_kv": 115.0,
    "name": "Unnamed substation",
    "source_ref": "hifld-substations-2022",
    "type": "substation"
   },
   {
    "distance_km": 0.8,
    "id": "substation:hifld:200375",
    "kind": "SUBSTATION",
    "max_kv": 230.0,
    "name": "SOUTH TACOMA",
    "source_ref": "hifld-substations-2022",
    "type": "substation"
   },
   {
    "distance_km": 1.39,
    "id": "substation:hifld:203012",
    "kind": "SUBSTATION",
    "max_kv": 115.0,
    "name": "Unnamed substation",
    "source_ref": "hifld-substations-2022",
    "type": "substation"
   },
   {
    "distance_km": 2.88,
    "id": "substation:hifld:200374",
    "kind": "SUBSTATION",
    "max_kv": 115.0,
    "name": "FRANZ HOLMES",
    "source_ref": "hifld-substations-2022",
    "type": "substation"
   }
  ],
  "territories": [
   {
    "id": "territory:waecy:56",
    "name": "Tacoma Power",
    "note": "Plant coordinate lies inside this approximate territory polygon; candidate only, not a supply or service relationship",
    "relation": "candidate",
    "source_ref": "wa-ecology-territories"
   }
  ]
 },
 "coverage": {
  "generators_eligible": 2,
  "generators_operating": 2,
  "generators_published": 2,
  "output_years": [
   2015,
   2016,
   2017,
   2018,
   2019,
   2020,
   2021,
   2022,
   2023,
   2024
  ],
  "ownership_known_generators": 2
 },
 "disclosed_claims": {
  "note": "Washington Fuel Mix Disclosure claims on this plant for CY2024, the latest year loaded; several suppliers can claim one plant; a claim attributes retail sales, it is not a wire or a share of ownership",
  "report_year": 2024,
  "rows": [
   {
    "category": "Natural Gas",
    "claim_type": "Utility Specified",
    "claimant_id": 90,
    "claimant_name": "Puget Sound Energy",
    "mwh": 579357.0,
    "org": {
     "id": "org:eia:15500",
     "name": "Puget Sound Energy"
    },
    "rec": null,
    "report_year": 2024
   }
  ],
  "source_ref": "wa-fmd-2024-by-plant"
 },
 "emissions": {
  "all_units_monitored": true,
  "available": true,
  "combustion_mw": 318.3,
  "combustion_mw_monitored": 318.3,
  "conversion": {
   "short_tons_to_tonnes": 0.90718474
  },
  "crosswalk_source_ref": "pudl-epa-eia-crosswalk",
  "crosswalk_year": 2024,
  "evidence": "metered",
  "evidence_rule": "metered where at least 99% of the plant's operating unit-hours carry EPA's Measured flag, estimated where more were Substitute, Measured and Substitute or another method code",
  "facts": [
   {
    "basis": "Sum of hourly CO2 mass reported under 40 CFR Part 75 by the plant's EPA-monitored units over the reporting year, short tons x 0.90718474. Stack total of those units including any share attributable to steam sold; the plant's total only where every combustion generator is monitored",
    "coverage": {
     "eligible": 2,
     "included": 2,
     "unit": "combustion generators"
    },
    "denominator": null,
    "evidence": "metered",
    "fact_id": "plant:eia:55818#co2_mass_tonnes@2024",
    "label": "CO2 mass, monitored units",
    "locator": "core_epacems__hourly_emissions.parquet; year=2024; plant_id_eia=55818",
    "maturity": "final",
    "method": "derived",
    "metric": "co2_mass_tonnes",
    "missing_reason": null,
    "note": null,
    "period": {
     "hours": 8784,
     "kind": "calendar_year",
     "period_end": "2025-01-01T00:00:00Z",
     "period_start": "2024-01-01T00:00:00Z",
     "year": 2024
    },
    "precision": 0,
    "quality": "valid",
    "source_ref": "pudl-epacems",
    "unit": "t CO2",
    "value": 668909.4556978337
   },
   {
    "basis": "The same sum in the unit EPA's files use (short tons); shown beside the metric figure so the conversion is visible",
    "coverage": {
     "eligible": 2,
     "included": 2,
     "unit": "combustion generators"
    },
    "denominator": null,
    "evidence": "metered",
    "fact_id": "plant:eia:55818#co2_mass_short_tons@2024",
    "label": "CO2 mass, monitored units, as filed",
    "locator": "core_epacems__hourly_emissions.parquet; year=2024; plant_id_eia=55818",
    "maturity": "final",
    "method": "derived",
    "metric": "co2_mass_short_tons",
    "missing_reason": null,
    "note": null,
    "period": {
     "hours": 8784,
     "kind": "calendar_year",
     "period_end": "2025-01-01T00:00:00Z",
     "period_start": "2024-01-01T00:00:00Z",
     "year": 2024
    },
    "precision": 0,
    "quality": "valid",
    "source_ref": "pudl-epacems",
    "unit": "short tons CO2",
    "value": 737346.4589999978
   },
   {
    "basis": "Sum over the year of each monitored unit's reported hourly gross load (MW) x operating time (h). A unit-reported quantity: a combined-cycle unit need not include its steam turbine, so this can be below EIA net generation",
    "coverage": null,
    "denominator": null,
    "evidence": "metered",
    "fact_id": "plant:eia:55818#cems_gross_load_mwh@2024",
    "label": "Gross load of monitored units",
    "locator": "core_epacems__hourly_emissions.parquet; year=2024; plant_id_eia=55818",
    "maturity": "final",
    "method": "derived",
    "metric": "cems_gross_load_mwh",
    "missing_reason": null,
    "note": null,
    "period": {
     "hours": 8784,
     "kind": "calendar_year",
     "period_end": "2025-01-01T00:00:00Z",
     "period_start": "2024-01-01T00:00:00Z",
     "year": 2024
    },
    "precision": 0,
    "quality": "valid",
    "source_ref": "pudl-epacems",
    "unit": "MWh",
    "value": 1735837.77
   },
   {
    "basis": "Sum over the year of each monitored unit's reported hourly heat input",
    "coverage": null,
    "denominator": null,
    "evidence": "metered",
    "fact_id": "plant:eia:55818#cems_heat_input_mmbtu@2024",
    "label": "Heat input of monitored units",
    "locator": "core_epacems__hourly_emissions.parquet; year=2024; plant_id_eia=55818",
    "maturity": "final",
    "method": "derived",
    "metric": "cems_heat_input_mmbtu",
    "missing_reason": null,
    "note": null,
    "period": {
     "hours": 8784,
     "kind": "calendar_year",
     "period_end": "2025-01-01T00:00:00Z",
     "period_start": "2024-01-01T00:00:00Z",
     "year": 2024
    },
    "precision": 0,
    "quality": "valid",
    "source_ref": "pudl-epacems",
    "unit": "mmBtu",
    "value": 12407282.49000007
   },
   {
    "basis": "Sum of reported operating time over the plant's monitored units: unit-hours, so it can exceed the hours in the year when several units ran",
    "coverage": {
     "eligible": 1,
     "included": 1,
     "unit": "monitored units"
    },
    "denominator": null,
    "evidence": "metered",
    "fact_id": "plant:eia:55818#cems_unit_operating_hours@2024",
    "label": "Unit operating hours, monitored units",
    "locator": "core_epacems__hourly_emissions.parquet; year=2024; plant_id_eia=55818",
    "maturity": "final",
    "method": "derived",
    "metric": "cems_unit_operating_hours",
    "missing_reason": null,
    "note": null,
    "period": {
     "hours": 8784,
     "kind": "calendar_year",
     "period_end": "2025-01-01T00:00:00Z",
     "period_start": "2024-01-01T00:00:00Z",
     "year": 2024
    },
    "precision": 1,
    "quality": "valid",
    "source_ref": "pudl-epacems",
    "unit": "h",
    "value": 6959.57
   },
   {
    "basis": "Calendar hours of the reporting year in which at least one monitored unit reported operating time; never above the hours in the year",
    "coverage": null,
    "denominator": null,
    "evidence": "metered",
    "fact_id": "plant:eia:55818#cems_hours_with_operation@2024",
    "label": "Hours in which a monitored unit ran",
    "locator": "core_epacems__hourly_emissions.parquet; year=2024; plant_id_eia=55818",
    "maturity": "final",
    "method": "derived",
    "metric": "cems_hours_with_operation",
    "missing_reason": null,
    "note": null,
    "period": {
     "hours": 8784,
     "kind": "calendar_year",
     "period_end": "2025-01-01T00:00:00Z",
     "period_start": "2024-01-01T00:00:00Z",
     "year": 2024
    },
    "precision": 0,
    "quality": "valid",
    "source_ref": "pudl-epacems",
    "unit": "count",
    "value": 6966.0
   },
   {
    "basis": "Distinct EPA emissions units at the plant with rows in the reporting year; an EPA unit is a combustor or stack, not an EIA generator",
    "coverage": null,
    "denominator": null,
    "evidence": "reported",
    "fact_id": "plant:eia:55818#cems_units_monitored@2024",
    "label": "EPA emissions units with CEMS rows",
    "locator": "core_epacems__hourly_emissions.parquet; year=2024; plant_id_eia=55818",
    "maturity": "final",
    "method": "derived",
    "metric": "cems_units_monitored",
    "missing_reason": null,
    "note": null,
    "period": {
     "hours": 8784,
     "kind": "calendar_year",
     "period_end": "2025-01-01T00:00:00Z",
     "period_start": "2024-01-01T00:00:00Z",
     "year": 2024
    },
    "precision": 0,
    "quality": "valid",
    "source_ref": "pudl-epacems",
    "unit": "count",
    "value": 1.0
   },
   {
    "basis": "Existing coal, gas, oil or waste generators of the plant (EIA-860 inventory year) that the EPA-EIA crosswalk links to a unit with CEMS rows; a steam turbine linked to several combustion turbines counts once",
    "coverage": null,
    "denominator": null,
    "evidence": "reported",
    "fact_id": "plant:eia:55818#cems_generators_monitored@2024",
    "label": "Combustion generators linked to a monitored unit",
    "locator": "core_epa__assn_eia_epacamd.parquet; report_year=2024; plant_id_eia=55818",
    "maturity": "final",
    "method": "derived",
    "metric": "cems_generators_monitored",
    "missing_reason": null,
    "note": null,
    "period": {
     "hours": 8784,
     "kind": "calendar_year",
     "period_end": "2025-01-01T00:00:00Z",
     "period_start": "2024-01-01T00:00:00Z",
     "year": 2024
    },
    "precision": 0,
    "quality": "valid",
    "source_ref": "pudl-epa-eia-crosswalk",
    "unit": "count",
    "value": 2.0
   },
   {
    "basis": "Existing (operating, standby or out of service) generators whose resource group is coal, gas, oil or waste in the EIA-860 inventory year: the units that could be monitored",
    "coverage": null,
    "denominator": null,
    "evidence": "reported",
    "fact_id": "plant:eia:55818#cems_generators_total@2024",
    "label": "Combustion generators at the plant",
    "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55818",
    "maturity": "final",
    "method": "derived",
    "metric": "cems_generators_total",
    "missing_reason": null,
    "note": null,
    "period": {
     "hours": 8784,
     "kind": "calendar_year",
     "period_end": "2025-01-01T00:00:00Z",
     "period_start": "2024-01-01T00:00:00Z",
     "year": 2024
    },
    "precision": 0,
    "quality": "valid",
    "source_ref": "pudl-generators",
    "unit": "count",
    "value": 2.0
   },
   {
    "basis": "Operating unit-hours EPA flagged Measured divided by all operating unit-hours of the plant's monitored units; the rest were Substitute, Measured and Substitute, or another method code",
    "coverage": {
     "eligible": 6966,
     "included": 6966,
     "unit": "operating unit-hours"
    },
    "denominator": null,
    "evidence": "metered",
    "fact_id": "plant:eia:55818#cems_measured_share@2024",
    "label": "Share of operating unit-hours with measured CO2",
    "locator": "core_epacems__hourly_emissions.parquet; year=2024; plant_id_eia=55818",
    "maturity": "final",
    "method": "derived",
    "metric": "cems_measured_share",
    "missing_reason": null,
    "note": null,
    "period": {
     "hours": 8784,
     "kind": "calendar_year",
     "period_end": "2025-01-01T00:00:00Z",
     "period_start": "2024-01-01T00:00:00Z",
     "year": 2024
    },
    "precision": 4,
    "quality": "valid",
    "source_ref": "pudl-epacems",
    "unit": "fraction",
    "value": 1.0
   },
   {
    "basis": "Monitored-unit CO2 (tonnes) divided by the plant's EIA-923 net generation for the same year. Only where every combustion generator is monitored, so numerator and denominator cover the same plant; comparable across such plants",
    "coverage": null,
    "denominator": {
     "basis": "EIA-923 net generation of the whole plant, same calendar year",
     "metric": "net_generation_mwh",
     "unit": "MWh",
     "value": 1717651.0
    },
    "evidence": "metered",
    "fact_id": "plant:eia:55818#co2_intensity_net_t_per_mwh@2024",
    "label": "CO2 per MWh of net generation",
    "locator": "derived: co2_mass_tonnes@2024 / net_generation_mwh@2024 (pudl-output)",
    "maturity": "final",
    "method": "derived",
    "metric": "co2_intensity_net_t_per_mwh",
    "missing_reason": null,
    "note": null,
    "period": {
     "hours": 8784,
     "kind": "calendar_year",
     "period_end": "2025-01-01T00:00:00Z",
     "period_start": "2024-01-01T00:00:00Z",
     "year": 2024
    },
    "precision": 3,
    "quality": "valid",
    "source_ref": "pudl-epacems",
    "unit": "t CO2/MWh",
    "value": 0.38943269366002387
   },
   {
    "basis": "Monitored-unit CO2 (tonnes) divided by the same units' reported gross load. Only where every combustion generator is monitored and the gross load is not below EIA net generation; gross, so lower than the net figure, and not comparable with it",
    "coverage": null,
    "denominator": {
     "basis": "gross load the monitored units themselves reported; a combined-cycle unit need not include its steam turbine",
     "metric": "cems_gross_load_mwh",
     "unit": "MWh",
     "value": 1735837.77
    },
    "evidence": "metered",
    "fact_id": "plant:eia:55818#co2_intensity_gross_t_per_mwh@2024",
    "label": "CO2 per MWh of gross load (unit-reported)",
    "locator": "derived: co2_mass_tonnes@2024 / cems_gross_load_mwh@2024",
    "maturity": "final",
    "method": "derived",
    "metric": "co2_intensity_gross_t_per_mwh",
    "missing_reason": null,
    "note": null,
    "period": {
     "hours": 8784,
     "kind": "calendar_year",
     "period_end": "2025-01-01T00:00:00Z",
     "period_start": "2024-01-01T00:00:00Z",
     "year": 2024
    },
    "precision": 3,
    "quality": "valid",
    "source_ref": "pudl-epacems",
    "unit": "t CO2/MWh",
    "value": 0.3853525181087825
   }
  ],
  "generators_monitored": 2,
  "generators_monitored_other": 0,
  "generators_total": 2,
  "generators_unmonitored": null,
  "history": [
   {
    "all_units_monitored": true,
    "available": true,
    "combustion_mw": 318.3,
    "combustion_mw_monitored": 318.3,
    "conversion": {
     "short_tons_to_tonnes": 0.90718474
    },
    "crosswalk_source_ref": "pudl-epa-eia-crosswalk",
    "crosswalk_year": 2023,
    "evidence": "metered",
    "evidence_rule": "metered where at least 99% of the plant's operating unit-hours carry EPA's Measured flag, estimated where more were Substitute, Measured and Substitute or another method code",
    "facts": [
     {
      "basis": "Sum of hourly CO2 mass reported under 40 CFR Part 75 by the plant's EPA-monitored units over the reporting year, short tons x 0.90718474. Stack total of those units including any share attributable to steam sold; the plant's total only where every combustion generator is monitored",
      "coverage": {
       "eligible": 2,
       "included": 2,
       "unit": "combustion generators"
      },
      "denominator": null,
      "evidence": "metered",
      "fact_id": "plant:eia:55818#co2_mass_tonnes@2023",
      "label": "CO2 mass, monitored units",
      "locator": "core_epacems__hourly_emissions.parquet; year=2023; plant_id_eia=55818",
      "maturity": "final",
      "method": "derived",
      "metric": "co2_mass_tonnes",
      "missing_reason": null,
      "note": null,
      "period": {
       "hours": 8760,
       "kind": "calendar_year",
       "period_end": "2024-01-01T00:00:00Z",
       "period_start": "2023-01-01T00:00:00Z",
       "year": 2023
      },
      "precision": 0,
      "quality": "valid",
      "source_ref": "pudl-epacems",
      "unit": "t CO2",
      "value": 707985.0440303939
     },
     {
      "basis": "The same sum in the unit EPA's files use (short tons); shown beside the metric figure so the conversion is visible",
      "coverage": {
       "eligible": 2,
       "included": 2,
       "unit": "combustion generators"
      },
      "denominator": null,
      "evidence": "metered",
      "fact_id": "plant:eia:55818#co2_mass_short_tons@2023",
      "label": "CO2 mass, monitored units, as filed",
      "locator": "core_epacems__hourly_emissions.parquet; year=2023; plant_id_eia=55818",
      "maturity": "final",
      "method": "derived",
      "metric": "co2_mass_short_tons",
      "missing_reason": null,
      "note": null,
      "period": {
       "hours": 8760,
       "kind": "calendar_year",
       "period_end": "2024-01-01T00:00:00Z",
       "period_start": "2023-01-01T00:00:00Z",
       "year": 2023
      },
      "precision": 0,
      "quality": "valid",
      "source_ref": "pudl-epacems",
      "unit": "short tons CO2",
      "value": 780419.922000004
     },
     {
      "basis": "Sum over the year of each monitored unit's reported hourly gross load (MW) x operating time (h). A unit-reported quantity: a combined-cycle unit need not include its steam turbine, so this can be below EIA net generation",
      "coverage": null,
      "denominator": null,
      "evidence": "metered",
      "fact_id": "plant:eia:55818#cems_gross_load_mwh@2023",
      "label": "Gross load of monitored units",
      "locator": "core_epacems__hourly_emissions.parquet; year=2023; plant_id_eia=55818",
      "maturity": "final",
      "method": "derived",
      "metric": "cems_gross_load_mwh",
      "missing_reason": null,
      "note": null,
      "period": {
       "hours": 8760,
       "kind": "calendar_year",
       "period_end": "2024-01-01T00:00:00Z",
       "period_start": "2023-01-01T00:00:00Z",
       "year": 2023
      },
      "precision": 0,
      "quality": "valid",
      "source_ref": "pudl-epacems",
      "unit": "MWh",
      "value": 1843501.05
     },
     {
      "basis": "Sum over the year of each monitored unit's reported hourly heat input",
      "coverage": null,
      "denominator": null,
      "evidence": "metered",
      "fact_id": "plant:eia:55818#cems_heat_input_mmbtu@2023",
      "label": "Heat input of monitored units",
      "locator": "core_epacems__hourly_emissions.parquet; year=2023; plant_id_eia=55818",
      "maturity": "final",
      "method": "derived",
      "metric": "cems_heat_input_mmbtu",
      "missing_reason": null,
      "note": null,
      "period": {
       "hours": 8760,
       "kind": "calendar_year",
       "period_end": "2024-01-01T00:00:00Z",
       "period_start": "2023-01-01T00:00:00Z",
       "year": 2023
      },
      "precision": 0,
      "quality": "valid",
      "source_ref": "pudl-epacems",
      "unit": "mmBtu",
      "value": 13132044.696999967
     },
     {
      "basis": "Sum of reported operating time over the plant's monitored units: unit-hours, so it can exceed the hours in the year when several units ran",
      "coverage": {
       "eligible": 1,
       "included": 1,
       "unit": "monitored units"
      },
      "denominator": null,
      "evidence": "metered",
      "fact_id": "plant:eia:55818#cems_unit_operating_hours@2023",
      "label": "Unit operating hours, monitored units",
      "locator": "core_epacems__hourly_emissions.parquet; year=2023; plant_id_eia=55818",
      "maturity": "final",
      "method": "derived",
      "metric": "cems_unit_operating_hours",
      "missing_reason": null,
      "note": null,
      "period": {
       "hours": 8760,
       "kind": "calendar_year",
       "period_end": "2024-01-01T00:00:00Z",
       "period_start": "2023-01-01T00:00:00Z",
       "year": 2023
      },
      "precision": 1,
      "quality": "valid",
      "source_ref": "pudl-epacems",
      "unit": "h",
      "value": 7366.4
     },
     {
      "basis": "Calendar hours of the reporting year in which at least one monitored unit reported operating time; never above the hours in the year",
      "coverage": null,
      "denominator": null,
      "evidence": "metered",
      "fact_id": "plant:eia:55818#cems_hours_with_operation@2023",
      "label": "Hours in which a monitored unit ran",
      "locator": "core_epacems__hourly_emissions.parquet; year=2023; plant_id_eia=55818",
      "maturity": "final",
      "method": "derived",
      "metric": "cems_hours_with_operation",
      "missing_reason": null,
      "note": null,
      "period": {
       "hours": 8760,
       "kind": "calendar_year",
       "period_end": "2024-01-01T00:00:00Z",
       "period_start": "2023-01-01T00:00:00Z",
       "year": 2023
      },
      "precision": 0,
      "quality": "valid",
      "source_ref": "pudl-epacems",
      "unit": "count",
      "value": 7378.0
     },
     {
      "basis": "Distinct EPA emissions units at the plant with rows in the reporting year; an EPA unit is a combustor or stack, not an EIA generator",
      "coverage": null,
      "denominator": null,
      "evidence": "reported",
      "fact_id": "plant:eia:55818#cems_units_monitored@2023",
      "label": "EPA emissions units with CEMS rows",
      "locator": "core_epacems__hourly_emissions.parquet; year=2023; plant_id_eia=55818",
      "maturity": "final",
      "method": "derived",
      "metric": "cems_units_monitored",
      "missing_reason": null,
      "note": null,
      "period": {
       "hours": 8760,
       "kind": "calendar_year",
       "period_end": "2024-01-01T00:00:00Z",
       "period_start": "2023-01-01T00:00:00Z",
       "year": 2023
      },
      "precision": 0,
      "quality": "valid",
      "source_ref": "pudl-epacems",
      "unit": "count",
      "value": 1.0
     },
     {
      "basis": "Existing coal, gas, oil or waste generators of the plant (EIA-860 inventory year) that the EPA-EIA crosswalk links to a unit with CEMS rows; a steam turbine linked to several combustion turbines counts once",
      "coverage": null,
      "denominator": null,
      "evidence": "reported",
      "fact_id": "plant:eia:55818#cems_generators_monitored@2023",
      "label": "Combustion generators linked to a monitored unit",
      "locator": "core_epa__assn_eia_epacamd.parquet; report_year=2023; plant_id_eia=55818",
      "maturity": "final",
      "method": "derived",
      "metric": "cems_generators_monitored",
      "missing_reason": null,
      "note": null,
      "period": {
       "hours": 8760,
       "kind": "calendar_year",
       "period_end": "2024-01-01T00:00:00Z",
       "period_start": "2023-01-01T00:00:00Z",
       "year": 2023
      },
      "precision": 0,
      "quality": "valid",
      "source_ref": "pudl-epa-eia-crosswalk",
      "unit": "count",
      "value": 2.0
     },
     {
      "basis": "Existing (operating, standby or out of service) generators whose resource group is coal, gas, oil or waste in the EIA-860 inventory year: the units that could be monitored",
      "coverage": null,
      "denominator": null,
      "evidence": "reported",
      "fact_id": "plant:eia:55818#cems_generators_total@2023",
      "label": "Combustion generators at the plant",
      "locator": "out_eia__yearly_generators.parquet; report_date=2023-01-01; plant_id_eia=55818",
      "maturity": "final",
      "method": "derived",
      "metric": "cems_generators_total",
      "missing_reason": null,
      "note": null,
      "period": {
       "hours": 8760,
       "kind": "calendar_year",
       "period_end": "2024-01-01T00:00:00Z",
       "period_start": "2023-01-01T00:00:00Z",
       "year": 2023
      },
      "precision": 0,
      "quality": "valid",
      "source_ref": "pudl-generators",
      "unit": "count",
      "value": 2.0
     },
     {
      "basis": "Operating unit-hours EPA flagged Measured divided by all operating unit-hours of the plant's monitored units; the rest were Substitute, Measured and Substitute, or another method code",
      "coverage": {
       "eligible": 7378,
       "included": 7378,
       "unit": "operating unit-hours"
      },
      "denominator": null,
      "evidence": "metered",
      "fact_id": "plant:eia:55818#cems_measured_share@2023",
      "label": "Share of operating unit-hours with measured CO2",
      "locator": "core_epacems__hourly_emissions.parquet; year=2023; plant_id_eia=55818",
      "maturity": "final",
      "method": "derived",
      "metric": "cems_measured_share",
      "missing_reason": null,
      "note": null,
      "period": {
       "hours": 8760,
       "kind": "calendar_year",
       "period_end": "2024-01-01T00:00:00Z",
       "period_start": "2023-01-01T00:00:00Z",
       "year": 2023
      },
      "precision": 4,
      "quality": "valid",
      "source_ref": "pudl-epacems",
      "unit": "fraction",
      "value": 1.0
     },
     {
      "basis": "Monitored-unit CO2 (tonnes) divided by the plant's EIA-923 net generation for the same year. Only where every combustion generator is monitored, so numerator and denominator cover the same plant; comparable across such plants",
      "coverage": null,
      "denominator": {
       "basis": "EIA-923 net generation of the whole plant, same calendar year",
       "metric": "net_generation_mwh",
       "unit": "MWh",
       "value": 1824053.0
      },
      "evidence": "metered",
      "fact_id": "plant:eia:55818#co2_intensity_net_t_per_mwh@2023",
      "label": "CO2 per MWh of net generation",
      "locator": "derived: co2_mass_tonnes@2023 / net_generation_mwh@2023 (pudl-output)",
      "maturity": "final",
      "method": "derived",
      "metric": "co2_intensity_net_t_per_mwh",
      "missing_reason": null,
      "note": null,
      "period": {
       "hours": 8760,
       "kind": "calendar_year",
       "period_end": "2024-01-01T00:00:00Z",
       "period_start": "2023-01-01T00:00:00Z",
       "year": 2023
      },
      "precision": 3,
      "quality": "valid",
      "source_ref": "pudl-epacems",
      "unit": "t CO2/MWh",
      "value": 0.38813841704730834
     },
     {
      "basis": "Monitored-unit CO2 (tonnes) divided by the same units' reported gross load. Only where every combustion generator is monitored and the gross load is not below EIA net generation; gross, so lower than the net figure, and not comparable with it",
      "coverage": null,
      "denominator": {
       "basis": "gross load the monitored units themselves reported; a combined-cycle unit need not include its steam turbine",
       "metric": "cems_gross_load_mwh",
       "unit": "MWh",
       "value": 1843501.05
      },
      "evidence": "metered",
      "fact_id": "plant:eia:55818#co2_intensity_gross_t_per_mwh@2023",
      "label": "CO2 per MWh of gross load (unit-reported)",
      "locator": "derived: co2_mass_tonnes@2023 / cems_gross_load_mwh@2023",
      "maturity": "final",
      "method": "derived",
      "metric": "co2_intensity_gross_t_per_mwh",
      "missing_reason": null,
      "note": null,
      "period": {
       "hours": 8760,
       "kind": "calendar_year",
       "period_end": "2024-01-01T00:00:00Z",
       "period_start": "2023-01-01T00:00:00Z",
       "year": 2023
      },
      "precision": 3,
      "quality": "valid",
      "source_ref": "pudl-epacems",
      "unit": "t CO2/MWh",
      "value": 0.38404374330591995
     }
    ],
    "generators_monitored": 2,
    "generators_monitored_other": 0,
    "generators_total": 2,
    "generators_unmonitored": null,
    "hours_by_measurement": {
     "measured": 7378,
     "operating_without_code": 0,
     "other_code": 0,
     "substituted": 0,
     "unit": "operating unit-hours"
    },
    "measured_share": 1.0,
    "note": "CO2 reported hourly under 40 CFR Part 75 by this plant's EPA-monitored units and summed over the reporting year, as filed (short tons) and in tonnes. It is a stack total of those units, includes any share attributable to steam sold, and is not CO2-equivalent, lifecycle or consumption-based. EPA-monitored units are one program's population: the figure is not a regional total and an unmonitored plant is not zero.",
    "source_ref": "pudl-epacems",
    "units_monitored": 1,
    "year": 2023
   }
  ],
  "hours_by_measurement": {
   "measured": 6966,
   "operating_without_code": 0,
   "other_code": 0,
   "substituted": 0,
   "unit": "operating unit-hours"
  },
  "measured_share": 1.0,
  "note": "CO2 reported hourly under 40 CFR Part 75 by this plant's EPA-monitored units and summed over the reporting year, as filed (short tons) and in tonnes. It is a stack total of those units, includes any share attributable to steam sold, and is not CO2-equivalent, lifecycle or consumption-based. EPA-monitored units are one program's population: the figure is not a regional total and an unmonitored plant is not zero.",
  "source_ref": "pudl-epacems",
  "units_monitored": 1,
  "year": 2024
 },
 "events": [],
 "facts": [
  {
   "basis": "Sum of generator nameplate MW with operational status code OP in the inventory year; one row per generator; unscaled by ownership",
   "coverage": {
    "eligible": 2,
    "included": 2,
    "unit": "operating generators"
   },
   "denominator": null,
   "evidence": "reported",
   "fact_id": "plant:eia:55818#nameplate_mw_op@2024",
   "label": "Nameplate capacity, operating generators",
   "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55818",
   "maturity": "final",
   "method": "derived",
   "metric": "nameplate_mw_op",
   "missing_reason": null,
   "note": null,
   "period": {
    "kind": "inventory_year",
    "note": "EIA-860 annual inventory; status as of the end of the reporting year",
    "report_date": "2024-01-01",
    "year": 2024
   },
   "precision": 1,
   "quality": "valid",
   "source_ref": "pudl-generators",
   "unit": "MW",
   "value": 318.3
  },
  {
   "basis": "Generator rows for the plant in the inventory year, any status",
   "coverage": null,
   "denominator": null,
   "evidence": "reported",
   "fact_id": "plant:eia:55818#generator_count@2024",
   "label": "Generators listed",
   "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55818",
   "maturity": "final",
   "method": "derived",
   "metric": "generator_count",
   "missing_reason": null,
   "note": null,
   "period": {
    "kind": "inventory_year",
    "note": "EIA-860 annual inventory; status as of the end of the reporting year",
    "report_date": "2024-01-01",
    "year": 2024
   },
   "precision": 0,
   "quality": "valid",
   "source_ref": "pudl-generators",
   "unit": "count",
   "value": 2.0
  },
  {
   "basis": "Generator rows with status code OP",
   "coverage": null,
   "denominator": null,
   "evidence": "reported",
   "fact_id": "plant:eia:55818#generator_count_op@2024",
   "label": "Operating generators",
   "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55818",
   "maturity": "final",
   "method": "derived",
   "metric": "generator_count_op",
   "missing_reason": null,
   "note": null,
   "period": {
    "kind": "inventory_year",
    "note": "EIA-860 annual inventory; status as of the end of the reporting year",
    "report_date": "2024-01-01",
    "year": 2024
   },
   "precision": 0,
   "quality": "valid",
   "source_ref": "pudl-generators",
   "unit": "count",
   "value": 2.0
  },
  {
   "basis": "Sum of EIA-923 annual net generation over the plant's unique prime-mover x energy-source rows; negative values (pumping, station use) retained",
   "coverage": {
    "eligible": 2,
    "included": 2,
    "unit": "plant x prime-mover x fuel rows"
   },
   "denominator": null,
   "evidence": "reported",
   "fact_id": "plant:eia:55818#net_generation_mwh@2024",
   "label": "Net generation",
   "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2024-01-01; plant_id_eia=55818",
   "maturity": "final",
   "method": "derived",
   "metric": "net_generation_mwh",
   "missing_reason": null,
   "note": null,
   "period": {
    "hours": 8784,
    "kind": "calendar_year",
    "period_end": "2025-01-01T00:00:00Z",
    "period_start": "2024-01-01T00:00:00Z",
    "year": 2024
   },
   "precision": 0,
   "quality": "valid",
   "source_ref": "pudl-output",
   "unit": "MWh",
   "value": 1717651.0
  },
  {
   "basis": "Net generation MWh / (operating nameplate MW x hours in year); only when every operating generator was operating before the year began and none retired during it",
   "coverage": null,
   "denominator": {
    "hours": 8784,
    "metric": "nameplate_mw_op",
    "unit": "MW",
    "value": 318.3
   },
   "evidence": "reported",
   "fact_id": "plant:eia:55818#capacity_factor@2024",
   "label": "Capacity factor",
   "locator": "derived: net_generation_mwh@2024 / (nameplate_mw_op x 8784 h)",
   "maturity": "final",
   "method": "derived",
   "metric": "capacity_factor",
   "missing_reason": null,
   "note": null,
   "period": {
    "hours": 8784,
    "kind": "calendar_year",
    "period_end": "2025-01-01T00:00:00Z",
    "period_start": "2024-01-01T00:00:00Z",
    "year": 2024
   },
   "precision": 3,
   "quality": "valid",
   "source_ref": "pudl-output",
   "unit": "fraction",
   "value": 0.6143359931832761
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 ],
 "generators": [
  {
   "dates": {
    "note": "EIA-860 reports month and year; day is a placeholder",
    "operating": "2002-08-01",
    "original_planned_operating": "2002-07-01",
    "planned_operating": null,
    "planned_retirement": null,
    "precision": "month",
    "retirement": null
   },
   "energy_source": {
    "code": "NG",
    "fuel_group": "gas",
    "label": "natural_gas"
   },
   "facts": [
    {
     "basis": "Generator nameplate capacity as reported on EIA-860",
     "coverage": null,
     "denominator": null,
     "evidence": "reported",
     "fact_id": "generator:eia:55818:FICT#capacity_mw@2024",
     "label": "Nameplate capacity",
     "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55818; generator_id=FICT",
     "maturity": "final",
     "method": "derived",
     "metric": "capacity_mw",
     "missing_reason": null,
     "note": null,
     "period": {
      "kind": "inventory_year",
      "note": "EIA-860 annual inventory; status as of the end of the reporting year",
      "report_date": "2024-01-01",
      "year": 2024
     },
     "precision": 1,
     "quality": "valid",
     "source_ref": "pudl-generators",
     "unit": "MW",
     "value": 192.0
    },
    {
     "basis": "Reported or source-estimated net summer capability",
     "coverage": null,
     "denominator": null,
     "evidence": "reported",
     "fact_id": "generator:eia:55818:FICT#summer_capacity_mw@2024",
     "label": "Net summer capacity",
     "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55818; generator_id=FICT",
     "maturity": "final",
     "method": "derived",
     "metric": "summer_capacity_mw",
     "missing_reason": null,
     "note": null,
     "period": {
      "kind": "inventory_year",
      "note": "EIA-860 annual inventory; status as of the end of the reporting year",
      "report_date": "2024-01-01",
      "year": 2024
     },
     "precision": 1,
     "quality": "valid",
     "source_ref": "pudl-generators",
     "unit": "MW",
     "value": 164.0
    },
    {
     "basis": "Reported or source-estimated net winter capability",
     "coverage": null,
     "denominator": null,
     "evidence": "reported",
     "fact_id": "generator:eia:55818:FICT#winter_capacity_mw@2024",
     "label": "Net winter capacity",
     "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55818; generator_id=FICT",
     "maturity": "final",
     "method": "derived",
     "metric": "winter_capacity_mw",
     "missing_reason": null,
     "note": null,
     "period": {
      "kind": "inventory_year",
      "note": "EIA-860 annual inventory; status as of the end of the reporting year",
      "report_date": "2024-01-01",
      "year": 2024
     },
     "precision": 1,
     "quality": "valid",
     "source_ref": "pudl-generators",
     "unit": "MW",
     "value": 180.0
    }
   ],
   "generator_id": "FICT",
   "id": "generator:eia:55818:FICT",
   "is_storage": false,
   "operator": {
    "entity_type": "Q",
    "entity_type_label": "Independent power producer",
    "id": "org:eia:56613",
    "name": "Frederickson Power LP"
   },
   "ownership": {
    "basis": "reported_schedule",
    "invalid_shares": false,
    "note": null,
    "shares": [
     {
      "basis": "reported_schedule",
      "evidence": "reported",
      "fraction": 0.4985,
      "locator": "out_eia860__yearly_ownership.parquet; report_date=2024-01-01; plant_id_eia=55818; generator_id=FICT; owner_utility_id_eia=15500",
      "method": "direct",
      "owned_mw": 95.712,
      "owner": {
       "entity_type": "I",
       "entity_type_label": "Investor-owned utility",
       "id": "org:eia:15500",
       "name": "Puget Sound Energy"
      },
      "reason": null,
      "source_ref": "pudl-ownership"
     },
     {
      "basis": "reported_schedule",
      "evidence": "reported",
      "fraction": 0.5015,
      "locator": "out_eia860__yearly_ownership.parquet; report_date=2024-01-01; plant_id_eia=55818; generator_id=FICT; owner_utility_id_eia=59365",
      "method": "direct",
      "owned_mw": 96.28799999999998,
      "owner": {
       "entity_type": "Q",
       "entity_type_label": "Independent power producer",
       "id": "org:eia:59365",
       "name": "Capital Power"
      },
      "reason": null,
      "source_ref": "pudl-ownership"
     }
    ],
    "unassigned_fraction": 0.0,
    "unassigned_mw": 0.0,
    "unknown_reason": null
   },
   "prime_mover": {
    "code": "CT",
    "label": "combined_cycle_combustion_turbine"
   },
   "resource_group": "gas",
   "status": {
    "category": "existing",
    "code": "OP",
    "label": "operating"
   },
   "storage": null,
   "technology": "Natural Gas Fired Combined Cycle"
  },
  {
   "dates": {
    "note": "EIA-860 reports month and year; day is a placeholder",
    "operating": "2002-08-01",
    "original_planned_operating": "2002-07-01",
    "planned_operating": null,
    "planned_retirement": null,
    "precision": "month",
    "retirement": null
   },
   "energy_source": {
    "code": "NG",
    "fuel_group": "gas",
    "label": "natural_gas"
   },
   "facts": [
    {
     "basis": "Generator nameplate capacity as reported on EIA-860",
     "coverage": null,
     "denominator": null,
     "evidence": "reported",
     "fact_id": "generator:eia:55818:FIST#capacity_mw@2024",
     "label": "Nameplate capacity",
     "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55818; generator_id=FIST",
     "maturity": "final",
     "method": "derived",
     "metric": "capacity_mw",
     "missing_reason": null,
     "note": null,
     "period": {
      "kind": "inventory_year",
      "note": "EIA-860 annual inventory; status as of the end of the reporting year",
      "report_date": "2024-01-01",
      "year": 2024
     },
     "precision": 1,
     "quality": "valid",
     "source_ref": "pudl-generators",
     "unit": "MW",
     "value": 126.3
    },
    {
     "basis": "Reported or source-estimated net summer capability",
     "coverage": null,
     "denominator": null,
     "evidence": "reported",
     "fact_id": "generator:eia:55818:FIST#summer_capacity_mw@2024",
     "label": "Net summer capacity",
     "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55818; generator_id=FIST",
     "maturity": "final",
     "method": "derived",
     "metric": "summer_capacity_mw",
     "missing_reason": null,
     "note": null,
     "period": {
      "kind": "inventory_year",
      "note": "EIA-860 annual inventory; status as of the end of the reporting year",
      "report_date": "2024-01-01",
      "year": 2024
     },
     "precision": 1,
     "quality": "valid",
     "source_ref": "pudl-generators",
     "unit": "MW",
     "value": 82.0
    },
    {
     "basis": "Reported or source-estimated net winter capability",
     "coverage": null,
     "denominator": null,
     "evidence": "reported",
     "fact_id": "generator:eia:55818:FIST#winter_capacity_mw@2024",
     "label": "Net winter capacity",
     "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55818; generator_id=FIST",
     "maturity": "final",
     "method": "derived",
     "metric": "winter_capacity_mw",
     "missing_reason": null,
     "note": null,
     "period": {
      "kind": "inventory_year",
      "note": "EIA-860 annual inventory; status as of the end of the reporting year",
      "report_date": "2024-01-01",
      "year": 2024
     },
     "precision": 1,
     "quality": "valid",
     "source_ref": "pudl-generators",
     "unit": "MW",
     "value": 85.0
    }
   ],
   "generator_id": "FIST",
   "id": "generator:eia:55818:FIST",
   "is_storage": false,
   "operator": {
    "entity_type": "Q",
    "entity_type_label": "Independent power producer",
    "id": "org:eia:56613",
    "name": "Frederickson Power LP"
   },
   "ownership": {
    "basis": "reported_schedule",
    "invalid_shares": false,
    "note": null,
    "shares": [
     {
      "basis": "reported_schedule",
      "evidence": "reported",
      "fraction": 0.4985,
      "locator": "out_eia860__yearly_ownership.parquet; report_date=2024-01-01; plant_id_eia=55818; generator_id=FIST; owner_utility_id_eia=15500",
      "method": "direct",
      "owned_mw": 62.96055,
      "owner": {
       "entity_type": "I",
       "entity_type_label": "Investor-owned utility",
       "id": "org:eia:15500",
       "name": "Puget Sound Energy"
      },
      "reason": null,
      "source_ref": "pudl-ownership"
     },
     {
      "basis": "reported_schedule",
      "evidence": "reported",
      "fraction": 0.5015,
      "locator": "out_eia860__yearly_ownership.parquet; report_date=2024-01-01; plant_id_eia=55818; generator_id=FIST; owner_utility_id_eia=59365",
      "method": "direct",
      "owned_mw": 63.33944999999999,
      "owner": {
       "entity_type": "Q",
       "entity_type_label": "Independent power producer",
       "id": "org:eia:59365",
       "name": "Capital Power"
      },
      "reason": null,
      "source_ref": "pudl-ownership"
     }
    ],
    "unassigned_fraction": 0.0,
    "unassigned_mw": 0.0,
    "unknown_reason": null
   },
   "prime_mover": {
    "code": "CA",
    "label": "combined_cycle_steam_turbine"
   },
   "resource_group": "gas",
   "status": {
    "category": "existing",
    "code": "OP",
    "label": "operating"
   },
   "storage": null,
   "technology": "Natural Gas Fired Combined Cycle"
  }
 ],
 "id": "plant:eia:55818",
 "interconnection_requests": [],
 "latest": {
  "changed_on": "2026-08-01",
  "changes_since_baseline": [],
  "edition": {
   "report_month": "2026-08-01",
   "source_ref": "eia860m-inventory",
   "valid_until": "2026-09-01"
  },
  "facts": [
   {
    "basis": "Sum of nameplate MW over generators whose current-valid EIA-860M workbook assertion has status OP; dated by the complete inventory edition; never added to the baseline aggregate",
    "coverage": {
     "eligible": 2,
     "included": 2,
     "unit": "current and historical generators",
     "unknown_current_state": 0
    },
    "denominator": null,
    "evidence": "reported",
    "fact_id": "plant:eia:55818#latest_nameplate_mw_op",
    "label": "Operating nameplate capacity, latest inventory",
    "locator": "Preliminary Monthly Electric Generator Inventory, August 2026; plant_id_eia=55818; report_date=2026-08-01",
    "maturity": "provisional",
    "method": "derived",
    "metric": "latest_nameplate_mw_op",
    "missing_reason": null,
    "note": null,
    "period": {
     "as_of": "2026-08-01",
     "kind": "instant",
     "note": "Complete EIA-860M monthly inventory; assertion dates are not event dates"
    },
    "precision": 1,
    "quality": "valid",
    "source_ref": "eia860m-inventory",
    "unit": "MW",
    "value": 318.3
   },
   {
    "basis": "Sum of nameplate MW over generators whose current-valid EIA-860M workbook assertion is a proposal or construction stage (P, L, T, U, V, OT, TS); a proposal is not a commitment and its date is a forecast",
    "coverage": {
     "eligible": 2,
     "included": 2,
     "unit": "current and historical generators"
    },
    "denominator": null,
    "evidence": "reported",
    "fact_id": "plant:eia:55818#latest_nameplate_mw_planned",
    "label": "Planned nameplate capacity, latest inventory",
    "locator": "Preliminary Monthly Electric Generator Inventory, August 2026; plant_id_eia=55818; report_date=2026-08-01",
    "maturity": "provisional",
    "method": "derived",
    "metric": "latest_nameplate_mw_planned",
    "missing_reason": "not_applicable",
    "note": null,
    "period": {
     "as_of": "2026-08-01",
     "kind": "instant",
     "note": "Complete EIA-860M monthly inventory; assertion dates are not event dates"
    },
    "precision": 1,
    "quality": "not_applicable",
    "source_ref": "eia860m-inventory",
    "unit": "MW",
    "value": null
   },
   {
    "basis": "Sum of nameplate MW over generators whose current-valid EIA-860M workbook assertion is retired, cancelled or indefinitely postponed (RE, CN, IP); retired is not demolished",
    "coverage": {
     "eligible": 2,
     "included": 2,
     "unit": "current and historical generators"
    },
    "denominator": null,
    "evidence": "reported",
    "fact_id": "plant:eia:55818#latest_nameplate_mw_retired",
    "label": "Retired or cancelled nameplate capacity, latest inventory",
    "locator": "Preliminary Monthly Electric Generator Inventory, August 2026; plant_id_eia=55818; report_date=2026-08-01",
    "maturity": "provisional",
    "method": "derived",
    "metric": "latest_nameplate_mw_retired",
    "missing_reason": "not_applicable",
    "note": null,
    "period": {
     "as_of": "2026-08-01",
     "kind": "instant",
     "note": "Complete EIA-860M monthly inventory; assertion dates are not event dates"
    },
    "precision": 1,
    "quality": "not_applicable",
    "source_ref": "eia860m-inventory",
    "unit": "MW",
    "value": null
   }
  ],
  "historical_units": [],
  "in_baseline": true,
  "last_retirement_date": null,
  "life": "operating",
  "next_planned_operating_date": null,
  "note": "Independently dated by EIA-860M; the baseline facts above stay the validated edition. Planned dates are forecasts; retired is not demolished.",
  "summary": {
   "mw_entered_service": null,
   "mw_retired_or_cancelled": null,
   "units_entered_service": 0,
   "units_new_since_baseline": 0,
   "units_retired_or_cancelled": 0
  },
  "units": [
   {
    "capacity_mw": 192.0,
    "changed_on": "2026-08-01",
    "dates": {
     "operating": "2002-08-01",
     "planned_operating": null,
     "planned_retirement": null,
     "precision": "month",
     "retirement": null
    },
    "generator_id": "FICT",
    "id": "generator:eia:55818:FICT",
    "in_baseline": true,
    "life": "operating",
    "resource_group": "gas",
    "status": {
     "category": "existing",
     "code": "OP",
     "label": "operating"
    },
    "technology": "Natural Gas Fired Combined Cycle"
   },
   {
    "capacity_mw": 126.3,
    "changed_on": "2026-08-01",
    "dates": {
     "operating": "2002-08-01",
     "planned_operating": null,
     "planned_retirement": null,
     "precision": "month",
     "retirement": null
    },
    "generator_id": "FIST",
    "id": "generator:eia:55818:FIST",
    "in_baseline": true,
    "life": "operating",
    "resource_group": "gas",
    "status": {
     "category": "existing",
     "code": "OP",
     "label": "operating"
    },
    "technology": "Natural Gas Fired Combined Cycle"
   }
  ]
 },
 "location": {
  "city": "Tacoma",
  "county": "Pierce",
  "datum": null,
  "lat": 47.086111,
  "locator": "out_eia__yearly_plants.parquet; report_date=2024-01-01; plant_id_eia=55818",
  "lon": -122.365674,
  "note": "Plant coordinate shared by all generators; not turbine or inverter locations. Source datum field empty in this edition.",
  "quality": "source_reported",
  "source_ref": "pudl-plants",
  "state": "WA",
  "timezone": "America/Los_Angeles"
 },
 "name": "Frederickson 1 Generating Station",
 "operator": {
  "entity_type": "Q",
  "entity_type_label": "Independent power producer",
  "id": "org:eia:56613",
  "name": "Frederickson Power LP"
 },
 "output": {
  "annual": [
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 444211.0,
      "prime_mover": {
       "code": "CA",
       "label": "combined_cycle_steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 805829.0,
      "prime_mover": {
       "code": "CT",
       "label": "combined_cycle_combustion_turbine"
      }
     }
    ],
    "fact": {
     "basis": "Sum of EIA-923 annual net generation over the plant's unique prime-mover x energy-source rows; negative values (pumping, station use) retained",
     "coverage": {
      "eligible": 2,
      "included": 2,
      "unit": "plant x prime-mover x fuel rows"
     },
     "denominator": null,
     "evidence": "reported",
     "fact_id": "plant:eia:55818#net_generation_mwh@2015",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2015-01-01; plant_id_eia=55818",
     "maturity": "final",
     "method": "derived",
     "metric": "net_generation_mwh",
     "missing_reason": null,
     "note": null,
     "period": {
      "hours": 8760,
      "kind": "calendar_year",
      "period_end": "2016-01-01T00:00:00Z",
      "period_start": "2015-01-01T00:00:00Z",
      "year": 2015
     },
     "precision": 0,
     "quality": "valid",
     "source_ref": "pudl-output",
     "unit": "MWh",
     "value": 1250040.0
    },
    "rows": 2,
    "year": 2015
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 297856.0,
      "prime_mover": {
       "code": "CA",
       "label": "combined_cycle_steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 539706.0,
      "prime_mover": {
       "code": "CT",
       "label": "combined_cycle_combustion_turbine"
      }
     }
    ],
    "fact": {
     "basis": "Sum of EIA-923 annual net generation over the plant's unique prime-mover x energy-source rows; negative values (pumping, station use) retained",
     "coverage": {
      "eligible": 2,
      "included": 2,
      "unit": "plant x prime-mover x fuel rows"
     },
     "denominator": null,
     "evidence": "reported",
     "fact_id": "plant:eia:55818#net_generation_mwh@2016",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2016-01-01; plant_id_eia=55818",
     "maturity": "final",
     "method": "derived",
     "metric": "net_generation_mwh",
     "missing_reason": null,
     "note": null,
     "period": {
      "hours": 8784,
      "kind": "calendar_year",
      "period_end": "2017-01-01T00:00:00Z",
      "period_start": "2016-01-01T00:00:00Z",
      "year": 2016
     },
     "precision": 0,
     "quality": "valid",
     "source_ref": "pudl-output",
     "unit": "MWh",
     "value": 837562.0
    },
    "rows": 2,
    "year": 2016
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 323242.0,
      "prime_mover": {
       "code": "CA",
       "label": "combined_cycle_steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 608204.0,
      "prime_mover": {
       "code": "CT",
       "label": "combined_cycle_combustion_turbine"
      }
     }
    ],
    "fact": {
     "basis": "Sum of EIA-923 annual net generation over the plant's unique prime-mover x energy-source rows; negative values (pumping, station use) retained",
     "coverage": {
      "eligible": 2,
      "included": 2,
      "unit": "plant x prime-mover x fuel rows"
     },
     "denominator": null,
     "evidence": "reported",
     "fact_id": "plant:eia:55818#net_generation_mwh@2017",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2017-01-01; plant_id_eia=55818",
     "maturity": "final",
     "method": "derived",
     "metric": "net_generation_mwh",
     "missing_reason": null,
     "note": null,
     "period": {
      "hours": 8760,
      "kind": "calendar_year",
      "period_end": "2018-01-01T00:00:00Z",
      "period_start": "2017-01-01T00:00:00Z",
      "year": 2017
     },
     "precision": 0,
     "quality": "valid",
     "source_ref": "pudl-output",
     "unit": "MWh",
     "value": 931446.0
    },
    "rows": 2,
    "year": 2017
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 247044.0,
      "prime_mover": {
       "code": "CA",
       "label": "combined_cycle_steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 462518.0,
      "prime_mover": {
       "code": "CT",
       "label": "combined_cycle_combustion_turbine"
      }
     }
    ],
    "fact": {
     "basis": "Sum of EIA-923 annual net generation over the plant's unique prime-mover x energy-source rows; negative values (pumping, station use) retained",
     "coverage": {
      "eligible": 2,
      "included": 2,
      "unit": "plant x prime-mover x fuel rows"
     },
     "denominator": null,
     "evidence": "reported",
     "fact_id": "plant:eia:55818#net_generation_mwh@2018",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2018-01-01; plant_id_eia=55818",
     "maturity": "final",
     "method": "derived",
     "metric": "net_generation_mwh",
     "missing_reason": null,
     "note": null,
     "period": {
      "hours": 8760,
      "kind": "calendar_year",
      "period_end": "2019-01-01T00:00:00Z",
      "period_start": "2018-01-01T00:00:00Z",
      "year": 2018
     },
     "precision": 0,
     "quality": "valid",
     "source_ref": "pudl-output",
     "unit": "MWh",
     "value": 709562.0
    },
    "rows": 2,
    "year": 2018
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 466032.0,
      "prime_mover": {
       "code": "CA",
       "label": "combined_cycle_steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 877502.0,
      "prime_mover": {
       "code": "CT",
       "label": "combined_cycle_combustion_turbine"
      }
     }
    ],
    "fact": {
     "basis": "Sum of EIA-923 annual net generation over the plant's unique prime-mover x energy-source rows; negative values (pumping, station use) retained",
     "coverage": {
      "eligible": 2,
      "included": 2,
      "unit": "plant x prime-mover x fuel rows"
     },
     "denominator": null,
     "evidence": "reported",
     "fact_id": "plant:eia:55818#net_generation_mwh@2019",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2019-01-01; plant_id_eia=55818",
     "maturity": "final",
     "method": "derived",
     "metric": "net_generation_mwh",
     "missing_reason": null,
     "note": null,
     "period": {
      "hours": 8760,
      "kind": "calendar_year",
      "period_end": "2020-01-01T00:00:00Z",
      "period_start": "2019-01-01T00:00:00Z",
      "year": 2019
     },
     "precision": 0,
     "quality": "valid",
     "source_ref": "pudl-output",
     "unit": "MWh",
     "value": 1343534.0
    },
    "rows": 2,
    "year": 2019
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 333845.0,
      "prime_mover": {
       "code": "CA",
       "label": "combined_cycle_steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 626019.0,
      "prime_mover": {
       "code": "CT",
       "label": "combined_cycle_combustion_turbine"
      }
     }
    ],
    "fact": {
     "basis": "Sum of EIA-923 annual net generation over the plant's unique prime-mover x energy-source rows; negative values (pumping, station use) retained",
     "coverage": {
      "eligible": 2,
      "included": 2,
      "unit": "plant x prime-mover x fuel rows"
     },
     "denominator": null,
     "evidence": "reported",
     "fact_id": "plant:eia:55818#net_generation_mwh@2020",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2020-01-01; plant_id_eia=55818",
     "maturity": "final",
     "method": "derived",
     "metric": "net_generation_mwh",
     "missing_reason": null,
     "note": null,
     "period": {
      "hours": 8784,
      "kind": "calendar_year",
      "period_end": "2021-01-01T00:00:00Z",
      "period_start": "2020-01-01T00:00:00Z",
      "year": 2020
     },
     "precision": 0,
     "quality": "valid",
     "source_ref": "pudl-output",
     "unit": "MWh",
     "value": 959864.0
    },
    "rows": 2,
    "year": 2020
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 451192.0,
      "prime_mover": {
       "code": "CA",
       "label": "combined_cycle_steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 838484.0,
      "prime_mover": {
       "code": "CT",
       "label": "combined_cycle_combustion_turbine"
      }
     }
    ],
    "fact": {
     "basis": "Sum of EIA-923 annual net generation over the plant's unique prime-mover x energy-source rows; negative values (pumping, station use) retained",
     "coverage": {
      "eligible": 2,
      "included": 2,
      "unit": "plant x prime-mover x fuel rows"
     },
     "denominator": null,
     "evidence": "reported",
     "fact_id": "plant:eia:55818#net_generation_mwh@2021",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2021-01-01; plant_id_eia=55818",
     "maturity": "final",
     "method": "derived",
     "metric": "net_generation_mwh",
     "missing_reason": null,
     "note": null,
     "period": {
      "hours": 8760,
      "kind": "calendar_year",
      "period_end": "2022-01-01T00:00:00Z",
      "period_start": "2021-01-01T00:00:00Z",
      "year": 2021
     },
     "precision": 0,
     "quality": "valid",
     "source_ref": "pudl-output",
     "unit": "MWh",
     "value": 1289676.0
    },
    "rows": 2,
    "year": 2021
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 456952.0,
      "prime_mover": {
       "code": "CA",
       "label": "combined_cycle_steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 802087.0,
      "prime_mover": {
       "code": "CT",
       "label": "combined_cycle_combustion_turbine"
      }
     }
    ],
    "fact": {
     "basis": "Sum of EIA-923 annual net generation over the plant's unique prime-mover x energy-source rows; negative values (pumping, station use) retained",
     "coverage": {
      "eligible": 2,
      "included": 2,
      "unit": "plant x prime-mover x fuel rows"
     },
     "denominator": null,
     "evidence": "reported",
     "fact_id": "plant:eia:55818#net_generation_mwh@2022",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2022-01-01; plant_id_eia=55818",
     "maturity": "final",
     "method": "derived",
     "metric": "net_generation_mwh",
     "missing_reason": null,
     "note": null,
     "period": {
      "hours": 8760,
      "kind": "calendar_year",
      "period_end": "2023-01-01T00:00:00Z",
      "period_start": "2022-01-01T00:00:00Z",
      "year": 2022
     },
     "precision": 0,
     "quality": "valid",
     "source_ref": "pudl-output",
     "unit": "MWh",
     "value": 1259039.0
    },
    "rows": 2,
    "year": 2022
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 647963.0,
      "prime_mover": {
       "code": "CA",
       "label": "combined_cycle_steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 1176090.0,
      "prime_mover": {
       "code": "CT",
       "label": "combined_cycle_combustion_turbine"
      }
     }
    ],
    "fact": {
     "basis": "Sum of EIA-923 annual net generation over the plant's unique prime-mover x energy-source rows; negative values (pumping, station use) retained",
     "coverage": {
      "eligible": 2,
      "included": 2,
      "unit": "plant x prime-mover x fuel rows"
     },
     "denominator": null,
     "evidence": "reported",
     "fact_id": "plant:eia:55818#net_generation_mwh@2023",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2023-01-01; plant_id_eia=55818",
     "maturity": "final",
     "method": "derived",
     "metric": "net_generation_mwh",
     "missing_reason": null,
     "note": null,
     "period": {
      "hours": 8760,
      "kind": "calendar_year",
      "period_end": "2024-01-01T00:00:00Z",
      "period_start": "2023-01-01T00:00:00Z",
      "year": 2023
     },
     "precision": 0,
     "quality": "valid",
     "source_ref": "pudl-output",
     "unit": "MWh",
     "value": 1824053.0
    },
    "rows": 2,
    "year": 2023
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 621691.0,
      "prime_mover": {
       "code": "CA",
       "label": "combined_cycle_steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 1095960.0,
      "prime_mover": {
       "code": "CT",
       "label": "combined_cycle_combustion_turbine"
      }
     }
    ],
    "fact": {
     "basis": "Sum of EIA-923 annual net generation over the plant's unique prime-mover x energy-source rows; negative values (pumping, station use) retained",
     "coverage": {
      "eligible": 2,
      "included": 2,
      "unit": "plant x prime-mover x fuel rows"
     },
     "denominator": null,
     "evidence": "reported",
     "fact_id": "plant:eia:55818#net_generation_mwh@2024",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2024-01-01; plant_id_eia=55818",
     "maturity": "final",
     "method": "derived",
     "metric": "net_generation_mwh",
     "missing_reason": null,
     "note": null,
     "period": {
      "hours": 8784,
      "kind": "calendar_year",
      "period_end": "2025-01-01T00:00:00Z",
      "period_start": "2024-01-01T00:00:00Z",
      "year": 2024
     },
     "precision": 0,
     "quality": "valid",
     "source_ref": "pudl-output",
     "unit": "MWh",
     "value": 1717651.0
    },
    "rows": 2,
    "year": 2024
   }
  ],
  "monthly": {
   "available": true,
   "basis": "Sum of unique plant x prime-mover x fuel rows per month; local calendar months as published by EIA; only years in which the respondent reported monthly (M) or monthly values once per year (AM)",
   "evidence": "reported",
   "frequency_sources": {
    "2015": "pudl-plants",
    "2016": "pudl-plants"
   },
   "label": "Net generation, monthly",
   "locator": "out_eia923__monthly_generation_fuel_combined.parquet; plant_id_eia=55818",
   "maturity": "final",
   "method": "derived",
   "metric": "net_generation_mwh",
   "note": "Missing months absent, not zero; negative values retained; excluded years listed with reason",
   "period_kind": "calendar_month",
   "series_id": "plant:eia:55818#net_generation_mwh/monthly",
   "source_ref": "pudl-output-monthly",
   "unit": "MWh",
   "values": [
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2015-02-01T00:00:00Z",
     "period_start": "2015-01-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 93.0
    },
    {
     "hours": 672,
     "maturity": "final",
     "period_end": "2015-03-01T00:00:00Z",
     "period_start": "2015-02-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 0.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2015-04-01T00:00:00Z",
     "period_start": "2015-03-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 0.0
    },
    {
     "hours": 720,
     "maturity": "final",
     "period_end": "2015-05-01T00:00:00Z",
     "period_start": "2015-04-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 0.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2015-06-01T00:00:00Z",
     "period_start": "2015-05-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 116798.0
    },
    {
     "hours": 720,
     "maturity": "final",
     "period_end": "2015-07-01T00:00:00Z",
     "period_start": "2015-06-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 178344.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2015-08-01T00:00:00Z",
     "period_start": "2015-07-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 184145.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2015-09-01T00:00:00Z",
     "period_start": "2015-08-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 179887.0
    },
    {
     "hours": 720,
     "maturity": "final",
     "period_end": "2015-10-01T00:00:00Z",
     "period_start": "2015-09-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 177918.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2015-11-01T00:00:00Z",
     "period_start": "2015-10-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 184272.0
    },
    {
     "hours": 720,
     "maturity": "final",
     "period_end": "2015-12-01T00:00:00Z",
     "period_start": "2015-11-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 140303.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2016-01-01T00:00:00Z",
     "period_start": "2015-12-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 88280.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2016-02-01T00:00:00Z",
     "period_start": "2016-01-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 133954.0
    },
    {
     "hours": 696,
     "maturity": "final",
     "period_end": "2016-03-01T00:00:00Z",
     "period_start": "2016-02-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 55246.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2016-04-01T00:00:00Z",
     "period_start": "2016-03-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 0.0
    },
    {
     "hours": 720,
     "maturity": "final",
     "period_end": "2016-05-01T00:00:00Z",
     "period_start": "2016-04-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 0.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2016-06-01T00:00:00Z",
     "period_start": "2016-05-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 672.0
    },
    {
     "hours": 720,
     "maturity": "final",
     "period_end": "2016-07-01T00:00:00Z",
     "period_start": "2016-06-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 138928.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2016-08-01T00:00:00Z",
     "period_start": "2016-07-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 113976.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2016-09-01T00:00:00Z",
     "period_start": "2016-08-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 184435.0
    },
    {
     "hours": 720,
     "maturity": "final",
     "period_end": "2016-10-01T00:00:00Z",
     "period_start": "2016-09-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 166548.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2016-11-01T00:00:00Z",
     "period_start": "2016-10-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 74.0
    },
    {
     "hours": 720,
     "maturity": "final",
     "period_end": "2016-12-01T00:00:00Z",
     "period_start": "2016-11-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 0.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2017-01-01T00:00:00Z",
     "period_start": "2016-12-01T00:00:00Z",
     "quality": "valid",
     "rows": 2,
     "value": 43729.0
    }
   ],
   "years_eligible": [
    2015,
    2016
   ],
   "years_excluded": [
    {
     "frequency_code": "A",
     "reason": "annual_reporter",
     "year": 2017
    },
    {
     "frequency_code": "A",
     "reason": "annual_reporter",
     "year": 2018
    },
    {
     "frequency_code": "A",
     "reason": "annual_reporter",
     "year": 2019
    },
    {
     "frequency_code": "A",
     "reason": "annual_reporter",
     "year": 2020
    },
    {
     "frequency_code": "A",
     "reason": "annual_reporter",
     "year": 2021
    },
    {
     "frequency_code": "A",
     "reason": "annual_reporter",
     "year": 2022
    },
    {
     "frequency_code": "A",
     "reason": "annual_reporter",
     "year": 2023
    },
    {
     "frequency_code": "A",
     "reason": "annual_reporter",
     "year": 2024
    }
   ]
  },
  "note": "Sum of unique plant x prime-mover x fuel rows per year; negative values retained; missing years absent, not zero; no monthly curve inferred",
  "reporter_frequency": "annual"
 },
 "ownership_paths": {
  "available": true,
  "basis": "Physical capacity once (operating nameplate MW); each direct owner's share and owned MW on its existing basis; up each curated chain, exposure = MW below x the stated hop share, so it exists only while every hop is stated. MW stays at the last stated entity where a filing states control without a share. Direct MW and parent MW are two views of the same capacity and are never added together.",
  "capacity": {
   "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55818",
   "metric": "nameplate_mw_op",
   "note": "Physical capacity, counted once; every MW below is a share of it, not an addition to it",
   "source_ref": "pudl-generators",
   "unit": "MW",
   "value": 318.3
  },
  "chain_ends_without_exposure": [
   {
    "entity": {
     "id": "org:curated:aimco",
     "name": "Alberta Investment Management Corporation"
    },
    "kind": "curation_ends",
    "note": "The chain reaches this entity through a hop whose share the filing does not state, so no MW is attributed to it",
    "reason": "unstated_hop_below",
    "via_direct_owners": [
     "org:eia:15500"
    ]
   },
   {
    "entity": {
     "id": "org:curated:bci",
     "name": "British Columbia Investment Management Corporation"
    },
    "kind": "curation_ends",
    "note": "The chain reaches this entity through a hop whose share the filing does not state, so no MW is attributed to it",
    "reason": "unstated_hop_below",
    "via_direct_owners": [
     "org:eia:15500"
    ]
   },
   {
    "entity": {
     "id": "org:curated:macquarie-washington-clean-energy-investment-lp",
     "name": "Macquarie Washington Clean Energy Investment, L.P."
    },
    "kind": "curation_ends",
    "note": "The chain reaches this entity through a hop whose share the filing does not state, so no MW is attributed to it",
    "reason": "unstated_hop_below",
    "via_direct_owners": [
     "org:eia:15500"
    ]
   },
   {
    "entity": {
     "id": "org:curated:omers",
     "name": "Ontario Municipal Employees Retirement System"
    },
    "kind": "curation_ends",
    "note": "The chain reaches this entity through a hop whose share the filing does not state, so no MW is attributed to it",
    "reason": "unstated_hop_below",
    "via_direct_owners": [
     "org:eia:15500"
    ]
   },
   {
    "entity": {
     "id": "org:curated:ontario-teachers-pension-plan-board",
     "name": "Ontario Teachers' Pension Plan Board"
    },
    "kind": "curation_ends",
    "note": "The chain reaches this entity through a hop whose share the filing does not state, so no MW is attributed to it",
    "reason": "unstated_hop_below",
    "via_direct_owners": [
     "org:eia:15500"
    ]
   },
   {
    "entity": {
     "id": "org:curated:pggm",
     "name": "PGGM Vermogensbeheer B.V."
    },
    "kind": "curation_ends",
    "note": "The chain reaches this entity through a hop whose share the filing does not state, so no MW is attributed to it",
    "reason": "unstated_hop_below",
    "via_direct_owners": [
     "org:eia:15500"
    ]
   }
  ],
  "checked": "2026-09-22",
  "direct_owners": [
   {
    "all_hops_stated": true,
    "generators": 2,
    "owned_mw": 159.627,
    "owner": {
     "entity_type": "Q",
     "entity_type_label": "Independent power producer",
     "id": "org:eia:59365",
     "name": "Capital Power"
    },
    "terminal_kinds": [
     "publicly_held"
    ]
   },
   {
    "all_hops_stated": false,
    "generators": 2,
    "owned_mw": 158.673,
    "owner": {
     "entity_type": "I",
     "entity_type_label": "Investor-owned utility",
     "id": "org:eia:15500",
     "name": "Puget Sound Energy"
    },
    "terminal_kinds": [
     "share_not_stated"
    ]
   }
  ],
  "direct_share_changes_after_inventory": [],
  "excluded_generators": [],
  "generators": [
   {
    "attributable_mw": 192.0,
    "capacity_mw": 192.0,
    "direct_owners": [
     {
      "all_hops_stated": false,
      "curated": true,
      "exposure_evidence": "reported",
      "hops": [
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:eia:15500",
         "name": "Puget Sound Energy, Inc."
        },
        "cumulative_share": 0.498,
        "depth": 1,
        "effective_date": "2026-02-19",
        "effective_date_basis": "stated",
        "exposure_evidence": "reported",
        "exposure_method": "derived",
        "exposure_mw": 95.712,
        "locator": "Puget Energy and PSE Form 10-K for FY2025 (filed 2026-02-19), Part III Item 12 beneficial ownership table: \"Puget Energy holds 100.0% of the outstanding common stock of PSE\", 85,903,791 shares as of February 19, 2026; Exhibit 21.1 lists PSE as a subsidiary of Puget Energy",
        "note": "EIA utility 15500 is Puget Sound Energy, Inc. (Item 1: \"PSE is a public utility incorporated in the state of Washington in 1960\")",
        "parent": {
         "id": "org:sec:1085392",
         "name": "Puget Energy, Inc."
        },
        "relation": "wholly_owned_subsidiary",
        "reviewer": "claude-w65",
        "share": 1.0,
        "share_evidence": "reported",
        "share_method": "curated",
        "share_reason": null,
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:sec:1085392",
         "name": "Puget Energy, Inc."
        },
        "cumulative_share": 0.498,
        "depth": 2,
        "effective_date": "2026-02-19",
        "effective_date_basis": "stated",
        "exposure_evidence": "reported",
        "exposure_method": "derived",
        "exposure_mw": 95.712,
        "locator": "Part III Item 12: \"Puget Equico LLC (Puget Equico) and its affiliates beneficially own 100.0% of the outstanding common stock of Puget Energy\" (200 shares as of February 19, 2026); footnote 1 calls Puget Equico \"Puget Energy's parent company\"",
        "note": "The 200 shares are pledged to JPMorgan Chase Bank, N.A. as administrative agent under Puget Equico's Pledge Agreement (footnote 2); a pledge is security, not ownership",
        "parent": {
         "id": "org:curated:puget-equico-llc",
         "name": "Puget Equico LLC"
        },
        "relation": "wholly_owned_subsidiary",
        "reviewer": "claude-w65",
        "share": 1.0,
        "share_evidence": "reported",
        "share_method": "curated",
        "share_reason": null,
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:curated:puget-equico-llc",
         "name": "Puget Equico LLC"
        },
        "cumulative_share": 0.498,
        "depth": 3,
        "effective_date": "2026-02-19",
        "effective_date_basis": "stated",
        "exposure_evidence": "reported",
        "exposure_method": "derived",
        "exposure_mw": 95.712,
        "locator": "Part III Item 12 footnote 1: \"Puget Equico is a wholly-owned subsidiary of Puget Intermediate\"; the footnote's as-of date is February 19, 2026",
        "note": "\"Wholly-owned\" is read as a stated share of 1.0",
        "parent": {
         "id": "org:curated:puget-intermediate-holdings-inc",
         "name": "Puget Intermediate Holdings Inc."
        },
        "relation": "wholly_owned_subsidiary",
        "reviewer": "claude-w65",
        "share": 1.0,
        "share_evidence": "reported",
        "share_method": "curated",
        "share_reason": null,
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:curated:puget-intermediate-holdings-inc",
         "name": "Puget Intermediate Holdings Inc."
        },
        "cumulative_share": 0.498,
        "depth": 4,
        "effective_date": "2026-02-19",
        "effective_date_basis": "stated",
        "exposure_evidence": "reported",
        "exposure_method": "derived",
        "exposure_mw": 95.712,
        "locator": "Part III Item 12 footnote 1: \"Puget Intermediate is a wholly-owned subsidiary of Puget Holdings and the Investors are the direct or indirect owners of Puget Holdings\"",
        "note": "\"Wholly-owned\" is read as a stated share of 1.0",
        "parent": {
         "id": "org:curated:puget-holdings-llc",
         "name": "Puget Holdings LLC"
        },
        "relation": "wholly_owned_subsidiary",
        "reviewer": "claude-w65",
        "share": 1.0,
        "share_evidence": "reported",
        "share_method": "curated",
        "share_reason": null,
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:curated:puget-holdings-llc",
         "name": "Puget Holdings LLC"
        },
        "cumulative_share": null,
        "depth": 5,
        "effective_date": "2025-12-31",
        "effective_date_basis": "fiscal_year_end",
        "exposure_evidence": null,
        "exposure_method": null,
        "exposure_mw": null,
        "locator": "Part I Item 1: \"Puget Holdings is owned by a consortium of long-term infrastructure investors including the British Columbia Investment Management Corporation (BCIMC), the Alberta Investment Management Corporation (AIMCo), Ontario Municipal Employee Retirement System (OMERS), PGGM Vermogensbeheer B.V., Macquarie Washington Clean Energy Investment, L.P., and the Ontario Teachers' Pension Plan Board\"; Item 12 footnote 1 cites Schedule 13D/A of February 13, 2009",
        "note": "No percentage is stated in the 10-K and the list is introduced with \"including\"; the MW attributed to Puget Holdings is not split further",
        "parent": {
         "id": "org:curated:bci",
         "name": "British Columbia Investment Management Corporation"
        },
        "relation": "fund_managed",
        "reviewer": "claude-w65",
        "share": null,
        "share_evidence": null,
        "share_method": "curated",
        "share_reason": "share_not_stated_in_source",
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:curated:puget-holdings-llc",
         "name": "Puget Holdings LLC"
        },
        "cumulative_share": null,
        "depth": 5,
        "effective_date": "2025-12-31",
        "effective_date_basis": "fiscal_year_end",
        "exposure_evidence": null,
        "exposure_method": null,
        "exposure_mw": null,
        "locator": "Part I Item 1 consortium sentence (see the BCI row); Item 12 footnote 1 names PIP2PX (Pad) Ltd. and PIP2GV (Pad) Ltd., Edmonton, among the Investors",
        "note": "No percentage stated",
        "parent": {
         "id": "org:curated:aimco",
         "name": "Alberta Investment Management Corporation"
        },
        "relation": "fund_managed",
        "reviewer": "claude-w65",
        "share": null,
        "share_evidence": null,
        "share_method": "curated",
        "share_reason": "share_not_stated_in_source",
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:curated:puget-holdings-llc",
         "name": "Puget Holdings LLC"
        },
        "cumulative_share": null,
        "depth": 5,
        "effective_date": "2025-12-31",
        "effective_date_basis": "fiscal_year_end",
        "exposure_evidence": null,
        "exposure_method": null,
        "exposure_mw": null,
        "locator": "Part I Item 1 consortium sentence (see the BCI row); Item 12 footnote 1 lists OMERS among the Investors",
        "note": "No percentage stated",
        "parent": {
         "id": "org:curated:omers",
         "name": "Ontario Municipal Employees Retirement System"
        },
        "relation": "fund_managed",
        "reviewer": "claude-w65",
        "share": null,
        "share_evidence": null,
        "share_method": "curated",
        "share_reason": "share_not_stated_in_source",
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:curated:puget-holdings-llc",
         "name": "Puget Holdings LLC"
        },
        "cumulative_share": null,
        "depth": 5,
        "effective_date": "2025-12-31",
        "effective_date_basis": "fiscal_year_end",
        "exposure_evidence": null,
        "exposure_method": null,
        "exposure_mw": null,
        "locator": "Part I Item 1 consortium sentence (see the BCI row); Item 12 footnote 1 lists PGGM among the Investors",
        "note": "No percentage stated",
        "parent": {
         "id": "org:curated:pggm",
         "name": "PGGM Vermogensbeheer B.V."
        },
        "relation": "fund_managed",
        "reviewer": "claude-w65",
        "share": null,
        "share_evidence": null,
        "share_method": "curated",
        "share_reason": "share_not_stated_in_source",
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:curated:puget-holdings-llc",
         "name": "Puget Holdings LLC"
        },
        "cumulative_share": null,
        "depth": 5,
        "effective_date": "2025-12-31",
        "effective_date_basis": "fiscal_year_end",
        "exposure_evidence": null,
        "exposure_method": null,
        "exposure_mw": null,
        "locator": "Part I Item 1 consortium sentence (see the BCI row)",
        "note": "No percentage stated",
        "parent": {
         "id": "org:curated:macquarie-washington-clean-energy-investment-lp",
         "name": "Macquarie Washington Clean Energy Investment, L.P."
        },
        "relation": "fund_managed",
        "reviewer": "claude-w65",
        "share": null,
        "share_evidence": null,
        "share_method": "curated",
        "share_reason": "share_not_stated_in_source",
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:curated:puget-holdings-llc",
         "name": "Puget Holdings LLC"
        },
        "cumulative_share": null,
        "depth": 5,
        "effective_date": "2025-12-31",
        "effective_date_basis": "fiscal_year_end",
        "exposure_evidence": null,
        "exposure_method": null,
        "exposure_mw": null,
        "locator": "Part I Item 1 consortium sentence (see the BCI row)",
        "note": "No percentage stated",
        "parent": {
         "id": "org:curated:ontario-teachers-pension-plan-board",
         "name": "Ontario Teachers' Pension Plan Board"
        },
        "relation": "fund_managed",
        "reviewer": "claude-w65",
        "share": null,
        "share_evidence": null,
        "share_method": "curated",
        "share_reason": "share_not_stated_in_source",
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       }
      ],
      "owned_mw": 95.712,
      "owner": {
       "entity_type": "I",
       "entity_type_label": "Investor-owned utility",
       "id": "org:eia:15500",
       "name": "Puget Sound Energy"
      },
      "share": 0.4985,
      "terminals": [
       {
        "cumulative_share": null,
        "depth": 5,
        "entity": {
         "id": "org:curated:bci",
         "name": "British Columbia Investment Management Corporation"
        },
        "exposure_mw": null,
        "exposure_reason": "unstated_hop_below",
        "kind": "curation_ends",
        "locator": null,
        "note": "No parent row is curated above this entity; whether one exists is not established",
        "source_url": null
       },
       {
        "cumulative_share": null,
        "depth": 5,
        "entity": {
         "id": "org:curated:aimco",
         "name": "Alberta Investment Management Corporation"
        },
        "exposure_mw": null,
        "exposure_reason": "unstated_hop_below",
        "kind": "curation_ends",
        "locator": null,
        "note": "No parent row is curated above this entity; whether one exists is not established",
        "source_url": null
       },
       {
        "cumulative_share": null,
        "depth": 5,
        "entity": {
         "id": "org:curated:omers",
         "name": "Ontario Municipal Employees Retirement System"
        },
        "exposure_mw": null,
        "exposure_reason": "unstated_hop_below",
        "kind": "curation_ends",
        "locator": null,
        "note": "No parent row is curated above this entity; whether one exists is not established",
        "source_url": null
       },
       {
        "cumulative_share": null,
        "depth": 5,
        "entity": {
         "id": "org:curated:pggm",
         "name": "PGGM Vermogensbeheer B.V."
        },
        "exposure_mw": null,
        "exposure_reason": "unstated_hop_below",
        "kind": "curation_ends",
        "locator": null,
        "note": "No parent row is curated above this entity; whether one exists is not established",
        "source_url": null
       },
       {
        "cumulative_share": null,
        "depth": 5,
        "entity": {
         "id": "org:curated:macquarie-washington-clean-energy-investment-lp",
         "name": "Macquarie Washington Clean Energy Investment, L.P."
        },
        "exposure_mw": null,
        "exposure_reason": "unstated_hop_below",
        "kind": "curation_ends",
        "locator": null,
        "note": "No parent row is curated above this entity; whether one exists is not established",
        "source_url": null
       },
       {
        "cumulative_share": null,
        "depth": 5,
        "entity": {
         "id": "org:curated:ontario-teachers-pension-plan-board",
         "name": "Ontario Teachers' Pension Plan Board"
        },
        "exposure_mw": null,
        "exposure_reason": "unstated_hop_below",
        "kind": "curation_ends",
        "locator": null,
        "note": "No parent row is curated above this entity; whether one exists is not established",
        "source_url": null
       },
       {
        "cumulative_share": 0.498,
        "depth": 4,
        "entity": {
         "id": "org:curated:puget-holdings-llc",
         "name": "Puget Holdings LLC"
        },
        "exposure_mw": 95.712,
        "kind": "share_not_stated",
        "locator": "Part I Item 1: \"Puget Holdings is owned by a consortium of long-term infrastructure investors including the British Columbia Investment Management Corporation (BCIMC), the Alberta Investment Management Corporation (AIMCo), Ontario Municipal Employee Retirement System (OMERS), PGGM Vermogensbeheer B.V., Macquarie Washington Clean Energy Investment, L.P., and the Ontario Teachers' Pension Plan Board\"; Item 12 footnote 1 cites Schedule 13D/A of February 13, 2009",
        "note": "The filing states these parents without a share; the MW stays attributed here and is not split among them",
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm",
        "unresolved_parents": [
         {
          "id": "org:curated:bci",
          "name": "British Columbia Investment Management Corporation",
          "relation": "fund_managed",
          "share_reason": "share_not_stated_in_source"
         },
         {
          "id": "org:curated:aimco",
          "name": "Alberta Investment Management Corporation",
          "relation": "fund_managed",
          "share_reason": "share_not_stated_in_source"
         },
         {
          "id": "org:curated:omers",
          "name": "Ontario Municipal Employees Retirement System",
          "relation": "fund_managed",
          "share_reason": "share_not_stated_in_source"
         },
         {
          "id": "org:curated:pggm",
          "name": "PGGM Vermogensbeheer B.V.",
          "relation": "fund_managed",
          "share_reason": "share_not_stated_in_source"
         },
         {
          "id": "org:curated:macquarie-washington-clean-energy-investment-lp",
          "name": "Macquarie Washington Clean Energy Investment, L.P.",
          "relation": "fund_managed",
          "share_reason": "share_not_stated_in_source"
         },
         {
          "id": "org:curated:ontario-teachers-pension-plan-board",
          "name": "Ontario Teachers' Pension Plan Board",
          "relation": "fund_managed",
          "share_reason": "share_not_stated_in_source"
         }
        ]
       }
      ],
      "unnamed_remainders": []
     },
     {
      "all_hops_stated": true,
      "curated": true,
      "exposure_evidence": "reported",
      "hops": [],
      "owned_mw": 96.288,
      "owner": {
       "entity_type": "Q",
       "entity_type_label": "Independent power producer",
       "id": "org:eia:59365",
       "name": "Capital Power"
      },
      "share": 0.5015,
      "terminals": [
       {
        "cumulative_share": 0.501,
        "depth": 0,
        "entity": {
         "id": "org:eia:59365",
         "name": "Capital Power Corporation"
        },
        "exposure_mw": 96.288,
        "exposure_reason": null,
        "kind": "publicly_held",
        "locator": "Capital Power Corporation Annual Information Form for the year ended December 31, 2025 (dated March 4, 2026; filed on SEDAR+), Market for Securities, p. 86: \"The Company's Common Shares trade on the Toronto Stock Exchange under the symbol of CPX\"; Business of Capital Power - U.S. Flexible Generation - Frederickson, p. 37: \"Capital Power has a 50.15% undivided ownership interest under a joint venture with Puget Sound Energy, whereby the parties are tenants in common\"",
        "note": "EIA utility 59365 is the direct owner as EIA-860 2024 names it; the AIF speaks of \"Capital Power\" on a consolidated basis and its Inter-Corporate Relationships table (p. 15) lists only subsidiaries above a 20 percent asset or revenue threshold, so the entity of record holding the undivided interest is not named. A Canadian AIF is the equivalent of Form 10-K; the company's own copy is cited and the filing of record is on sedarplus.ca. The acquisition from Atlantic Power & Utilities closed December 28, 2023 (p. 22), before the 2024 inventory year. Since October 2025 PSE tolls Capital Power's share (p. 37: \"as of October 2025, the tolling agreement with Puget Sound Energy is active and will expire in October 2030\"), a supply arrangement, not an ownership share. Principal shareholders are in the management information circular and are not curated",
        "source_url": "https://www.capitalpower.com/wp-content/uploads/2026/03/capital-power-2025-annual-information-form.pdf"
       }
      ],
      "unnamed_remainders": []
     }
    ],
    "generator_id": "FICT",
    "invalid_shares": false,
    "ownership_basis": "reported_schedule",
    "residual_components": {
     "direct_unassigned_mw": 0.0,
     "direct_unknown_mw": 0.0,
     "unnamed_remainder_mw": 0.0
    },
    "status": "OP",
    "unknown_reason": null,
    "unknown_residual_mw": 0.0
   },
   {
    "attributable_mw": 126.3,
    "capacity_mw": 126.3,
    "direct_owners": [
     {
      "all_hops_stated": false,
      "curated": true,
      "exposure_evidence": "reported",
      "hops": [
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:eia:15500",
         "name": "Puget Sound Energy, Inc."
        },
        "cumulative_share": 0.498,
        "depth": 1,
        "effective_date": "2026-02-19",
        "effective_date_basis": "stated",
        "exposure_evidence": "reported",
        "exposure_method": "derived",
        "exposure_mw": 62.961,
        "locator": "Puget Energy and PSE Form 10-K for FY2025 (filed 2026-02-19), Part III Item 12 beneficial ownership table: \"Puget Energy holds 100.0% of the outstanding common stock of PSE\", 85,903,791 shares as of February 19, 2026; Exhibit 21.1 lists PSE as a subsidiary of Puget Energy",
        "note": "EIA utility 15500 is Puget Sound Energy, Inc. (Item 1: \"PSE is a public utility incorporated in the state of Washington in 1960\")",
        "parent": {
         "id": "org:sec:1085392",
         "name": "Puget Energy, Inc."
        },
        "relation": "wholly_owned_subsidiary",
        "reviewer": "claude-w65",
        "share": 1.0,
        "share_evidence": "reported",
        "share_method": "curated",
        "share_reason": null,
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:sec:1085392",
         "name": "Puget Energy, Inc."
        },
        "cumulative_share": 0.498,
        "depth": 2,
        "effective_date": "2026-02-19",
        "effective_date_basis": "stated",
        "exposure_evidence": "reported",
        "exposure_method": "derived",
        "exposure_mw": 62.961,
        "locator": "Part III Item 12: \"Puget Equico LLC (Puget Equico) and its affiliates beneficially own 100.0% of the outstanding common stock of Puget Energy\" (200 shares as of February 19, 2026); footnote 1 calls Puget Equico \"Puget Energy's parent company\"",
        "note": "The 200 shares are pledged to JPMorgan Chase Bank, N.A. as administrative agent under Puget Equico's Pledge Agreement (footnote 2); a pledge is security, not ownership",
        "parent": {
         "id": "org:curated:puget-equico-llc",
         "name": "Puget Equico LLC"
        },
        "relation": "wholly_owned_subsidiary",
        "reviewer": "claude-w65",
        "share": 1.0,
        "share_evidence": "reported",
        "share_method": "curated",
        "share_reason": null,
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:curated:puget-equico-llc",
         "name": "Puget Equico LLC"
        },
        "cumulative_share": 0.498,
        "depth": 3,
        "effective_date": "2026-02-19",
        "effective_date_basis": "stated",
        "exposure_evidence": "reported",
        "exposure_method": "derived",
        "exposure_mw": 62.961,
        "locator": "Part III Item 12 footnote 1: \"Puget Equico is a wholly-owned subsidiary of Puget Intermediate\"; the footnote's as-of date is February 19, 2026",
        "note": "\"Wholly-owned\" is read as a stated share of 1.0",
        "parent": {
         "id": "org:curated:puget-intermediate-holdings-inc",
         "name": "Puget Intermediate Holdings Inc."
        },
        "relation": "wholly_owned_subsidiary",
        "reviewer": "claude-w65",
        "share": 1.0,
        "share_evidence": "reported",
        "share_method": "curated",
        "share_reason": null,
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:curated:puget-intermediate-holdings-inc",
         "name": "Puget Intermediate Holdings Inc."
        },
        "cumulative_share": 0.498,
        "depth": 4,
        "effective_date": "2026-02-19",
        "effective_date_basis": "stated",
        "exposure_evidence": "reported",
        "exposure_method": "derived",
        "exposure_mw": 62.961,
        "locator": "Part III Item 12 footnote 1: \"Puget Intermediate is a wholly-owned subsidiary of Puget Holdings and the Investors are the direct or indirect owners of Puget Holdings\"",
        "note": "\"Wholly-owned\" is read as a stated share of 1.0",
        "parent": {
         "id": "org:curated:puget-holdings-llc",
         "name": "Puget Holdings LLC"
        },
        "relation": "wholly_owned_subsidiary",
        "reviewer": "claude-w65",
        "share": 1.0,
        "share_evidence": "reported",
        "share_method": "curated",
        "share_reason": null,
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:curated:puget-holdings-llc",
         "name": "Puget Holdings LLC"
        },
        "cumulative_share": null,
        "depth": 5,
        "effective_date": "2025-12-31",
        "effective_date_basis": "fiscal_year_end",
        "exposure_evidence": null,
        "exposure_method": null,
        "exposure_mw": null,
        "locator": "Part I Item 1: \"Puget Holdings is owned by a consortium of long-term infrastructure investors including the British Columbia Investment Management Corporation (BCIMC), the Alberta Investment Management Corporation (AIMCo), Ontario Municipal Employee Retirement System (OMERS), PGGM Vermogensbeheer B.V., Macquarie Washington Clean Energy Investment, L.P., and the Ontario Teachers' Pension Plan Board\"; Item 12 footnote 1 cites Schedule 13D/A of February 13, 2009",
        "note": "No percentage is stated in the 10-K and the list is introduced with \"including\"; the MW attributed to Puget Holdings is not split further",
        "parent": {
         "id": "org:curated:bci",
         "name": "British Columbia Investment Management Corporation"
        },
        "relation": "fund_managed",
        "reviewer": "claude-w65",
        "share": null,
        "share_evidence": null,
        "share_method": "curated",
        "share_reason": "share_not_stated_in_source",
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:curated:puget-holdings-llc",
         "name": "Puget Holdings LLC"
        },
        "cumulative_share": null,
        "depth": 5,
        "effective_date": "2025-12-31",
        "effective_date_basis": "fiscal_year_end",
        "exposure_evidence": null,
        "exposure_method": null,
        "exposure_mw": null,
        "locator": "Part I Item 1 consortium sentence (see the BCI row); Item 12 footnote 1 names PIP2PX (Pad) Ltd. and PIP2GV (Pad) Ltd., Edmonton, among the Investors",
        "note": "No percentage stated",
        "parent": {
         "id": "org:curated:aimco",
         "name": "Alberta Investment Management Corporation"
        },
        "relation": "fund_managed",
        "reviewer": "claude-w65",
        "share": null,
        "share_evidence": null,
        "share_method": "curated",
        "share_reason": "share_not_stated_in_source",
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:curated:puget-holdings-llc",
         "name": "Puget Holdings LLC"
        },
        "cumulative_share": null,
        "depth": 5,
        "effective_date": "2025-12-31",
        "effective_date_basis": "fiscal_year_end",
        "exposure_evidence": null,
        "exposure_method": null,
        "exposure_mw": null,
        "locator": "Part I Item 1 consortium sentence (see the BCI row); Item 12 footnote 1 lists OMERS among the Investors",
        "note": "No percentage stated",
        "parent": {
         "id": "org:curated:omers",
         "name": "Ontario Municipal Employees Retirement System"
        },
        "relation": "fund_managed",
        "reviewer": "claude-w65",
        "share": null,
        "share_evidence": null,
        "share_method": "curated",
        "share_reason": "share_not_stated_in_source",
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:curated:puget-holdings-llc",
         "name": "Puget Holdings LLC"
        },
        "cumulative_share": null,
        "depth": 5,
        "effective_date": "2025-12-31",
        "effective_date_basis": "fiscal_year_end",
        "exposure_evidence": null,
        "exposure_method": null,
        "exposure_mw": null,
        "locator": "Part I Item 1 consortium sentence (see the BCI row); Item 12 footnote 1 lists PGGM among the Investors",
        "note": "No percentage stated",
        "parent": {
         "id": "org:curated:pggm",
         "name": "PGGM Vermogensbeheer B.V."
        },
        "relation": "fund_managed",
        "reviewer": "claude-w65",
        "share": null,
        "share_evidence": null,
        "share_method": "curated",
        "share_reason": "share_not_stated_in_source",
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:curated:puget-holdings-llc",
         "name": "Puget Holdings LLC"
        },
        "cumulative_share": null,
        "depth": 5,
        "effective_date": "2025-12-31",
        "effective_date_basis": "fiscal_year_end",
        "exposure_evidence": null,
        "exposure_method": null,
        "exposure_mw": null,
        "locator": "Part I Item 1 consortium sentence (see the BCI row)",
        "note": "No percentage stated",
        "parent": {
         "id": "org:curated:macquarie-washington-clean-energy-investment-lp",
         "name": "Macquarie Washington Clean Energy Investment, L.P."
        },
        "relation": "fund_managed",
        "reviewer": "claude-w65",
        "share": null,
        "share_evidence": null,
        "share_method": "curated",
        "share_reason": "share_not_stated_in_source",
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       },
       {
        "checked": "2026-09-21",
        "child": {
         "id": "org:curated:puget-holdings-llc",
         "name": "Puget Holdings LLC"
        },
        "cumulative_share": null,
        "depth": 5,
        "effective_date": "2025-12-31",
        "effective_date_basis": "fiscal_year_end",
        "exposure_evidence": null,
        "exposure_method": null,
        "exposure_mw": null,
        "locator": "Part I Item 1 consortium sentence (see the BCI row)",
        "note": "No percentage stated",
        "parent": {
         "id": "org:curated:ontario-teachers-pension-plan-board",
         "name": "Ontario Teachers' Pension Plan Board"
        },
        "relation": "fund_managed",
        "reviewer": "claude-w65",
        "share": null,
        "share_evidence": null,
        "share_method": "curated",
        "share_reason": "share_not_stated_in_source",
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm"
       }
      ],
      "owned_mw": 62.961,
      "owner": {
       "entity_type": "I",
       "entity_type_label": "Investor-owned utility",
       "id": "org:eia:15500",
       "name": "Puget Sound Energy"
      },
      "share": 0.4985,
      "terminals": [
       {
        "cumulative_share": null,
        "depth": 5,
        "entity": {
         "id": "org:curated:bci",
         "name": "British Columbia Investment Management Corporation"
        },
        "exposure_mw": null,
        "exposure_reason": "unstated_hop_below",
        "kind": "curation_ends",
        "locator": null,
        "note": "No parent row is curated above this entity; whether one exists is not established",
        "source_url": null
       },
       {
        "cumulative_share": null,
        "depth": 5,
        "entity": {
         "id": "org:curated:aimco",
         "name": "Alberta Investment Management Corporation"
        },
        "exposure_mw": null,
        "exposure_reason": "unstated_hop_below",
        "kind": "curation_ends",
        "locator": null,
        "note": "No parent row is curated above this entity; whether one exists is not established",
        "source_url": null
       },
       {
        "cumulative_share": null,
        "depth": 5,
        "entity": {
         "id": "org:curated:omers",
         "name": "Ontario Municipal Employees Retirement System"
        },
        "exposure_mw": null,
        "exposure_reason": "unstated_hop_below",
        "kind": "curation_ends",
        "locator": null,
        "note": "No parent row is curated above this entity; whether one exists is not established",
        "source_url": null
       },
       {
        "cumulative_share": null,
        "depth": 5,
        "entity": {
         "id": "org:curated:pggm",
         "name": "PGGM Vermogensbeheer B.V."
        },
        "exposure_mw": null,
        "exposure_reason": "unstated_hop_below",
        "kind": "curation_ends",
        "locator": null,
        "note": "No parent row is curated above this entity; whether one exists is not established",
        "source_url": null
       },
       {
        "cumulative_share": null,
        "depth": 5,
        "entity": {
         "id": "org:curated:macquarie-washington-clean-energy-investment-lp",
         "name": "Macquarie Washington Clean Energy Investment, L.P."
        },
        "exposure_mw": null,
        "exposure_reason": "unstated_hop_below",
        "kind": "curation_ends",
        "locator": null,
        "note": "No parent row is curated above this entity; whether one exists is not established",
        "source_url": null
       },
       {
        "cumulative_share": null,
        "depth": 5,
        "entity": {
         "id": "org:curated:ontario-teachers-pension-plan-board",
         "name": "Ontario Teachers' Pension Plan Board"
        },
        "exposure_mw": null,
        "exposure_reason": "unstated_hop_below",
        "kind": "curation_ends",
        "locator": null,
        "note": "No parent row is curated above this entity; whether one exists is not established",
        "source_url": null
       },
       {
        "cumulative_share": 0.498,
        "depth": 4,
        "entity": {
         "id": "org:curated:puget-holdings-llc",
         "name": "Puget Holdings LLC"
        },
        "exposure_mw": 62.961,
        "kind": "share_not_stated",
        "locator": "Part I Item 1: \"Puget Holdings is owned by a consortium of long-term infrastructure investors including the British Columbia Investment Management Corporation (BCIMC), the Alberta Investment Management Corporation (AIMCo), Ontario Municipal Employee Retirement System (OMERS), PGGM Vermogensbeheer B.V., Macquarie Washington Clean Energy Investment, L.P., and the Ontario Teachers' Pension Plan Board\"; Item 12 footnote 1 cites Schedule 13D/A of February 13, 2009",
        "note": "The filing states these parents without a share; the MW stays attributed here and is not split among them",
        "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm",
        "unresolved_parents": [
         {
          "id": "org:curated:bci",
          "name": "British Columbia Investment Management Corporation",
          "relation": "fund_managed",
          "share_reason": "share_not_stated_in_source"
         },
         {
          "id": "org:curated:aimco",
          "name": "Alberta Investment Management Corporation",
          "relation": "fund_managed",
          "share_reason": "share_not_stated_in_source"
         },
         {
          "id": "org:curated:omers",
          "name": "Ontario Municipal Employees Retirement System",
          "relation": "fund_managed",
          "share_reason": "share_not_stated_in_source"
         },
         {
          "id": "org:curated:pggm",
          "name": "PGGM Vermogensbeheer B.V.",
          "relation": "fund_managed",
          "share_reason": "share_not_stated_in_source"
         },
         {
          "id": "org:curated:macquarie-washington-clean-energy-investment-lp",
          "name": "Macquarie Washington Clean Energy Investment, L.P.",
          "relation": "fund_managed",
          "share_reason": "share_not_stated_in_source"
         },
         {
          "id": "org:curated:ontario-teachers-pension-plan-board",
          "name": "Ontario Teachers' Pension Plan Board",
          "relation": "fund_managed",
          "share_reason": "share_not_stated_in_source"
         }
        ]
       }
      ],
      "unnamed_remainders": []
     },
     {
      "all_hops_stated": true,
      "curated": true,
      "exposure_evidence": "reported",
      "hops": [],
      "owned_mw": 63.339,
      "owner": {
       "entity_type": "Q",
       "entity_type_label": "Independent power producer",
       "id": "org:eia:59365",
       "name": "Capital Power"
      },
      "share": 0.5015,
      "terminals": [
       {
        "cumulative_share": 0.501,
        "depth": 0,
        "entity": {
         "id": "org:eia:59365",
         "name": "Capital Power Corporation"
        },
        "exposure_mw": 63.339,
        "exposure_reason": null,
        "kind": "publicly_held",
        "locator": "Capital Power Corporation Annual Information Form for the year ended December 31, 2025 (dated March 4, 2026; filed on SEDAR+), Market for Securities, p. 86: \"The Company's Common Shares trade on the Toronto Stock Exchange under the symbol of CPX\"; Business of Capital Power - U.S. Flexible Generation - Frederickson, p. 37: \"Capital Power has a 50.15% undivided ownership interest under a joint venture with Puget Sound Energy, whereby the parties are tenants in common\"",
        "note": "EIA utility 59365 is the direct owner as EIA-860 2024 names it; the AIF speaks of \"Capital Power\" on a consolidated basis and its Inter-Corporate Relationships table (p. 15) lists only subsidiaries above a 20 percent asset or revenue threshold, so the entity of record holding the undivided interest is not named. A Canadian AIF is the equivalent of Form 10-K; the company's own copy is cited and the filing of record is on sedarplus.ca. The acquisition from Atlantic Power & Utilities closed December 28, 2023 (p. 22), before the 2024 inventory year. Since October 2025 PSE tolls Capital Power's share (p. 37: \"as of October 2025, the tolling agreement with Puget Sound Energy is active and will expire in October 2030\"), a supply arrangement, not an ownership share. Principal shareholders are in the management information circular and are not curated",
        "source_url": "https://www.capitalpower.com/wp-content/uploads/2026/03/capital-power-2025-annual-information-form.pdf"
       }
      ],
      "unnamed_remainders": []
     }
    ],
    "generator_id": "FIST",
    "invalid_shares": false,
    "ownership_basis": "reported_schedule",
    "residual_components": {
     "direct_unassigned_mw": 0.0,
     "direct_unknown_mw": 0.0,
     "unnamed_remainder_mw": 0.0
    },
    "status": "OP",
    "unknown_reason": null,
    "unknown_residual_mw": 0.0
   }
  ],
  "grain": "generator",
  "id_schemes": {
   "org:curated": "Minted slug for an entity with neither id; no entity file in this release",
   "org:eia": "EIA utility id; an organization entity in this release",
   "org:sec": "SEC EDGAR Central Index Key; no entity file in this release"
  },
  "relations": {
   "fund_managed": "The parent is an investment fund, pension manager or fund vehicle; the share is as stated or null",
   "government": "The parent is a government or government body",
   "majority_owned": "The parent holds more than half of the child's equity, at the stated share",
   "minority_stake": "The parent holds less than half of the child's equity, at the stated share",
   "publicly_held": "The child's shares trade on a named exchange; the chain ends here. Holders above 5 percent are in the proxy statement and not curated",
   "subsidiary": "The filing states control (a subsidiary) without a percentage; the share is null and the MW is not carried up",
   "wholly_owned_subsidiary": "The parent holds all of the child's equity, as the filing states"
  },
  "residual_components": {
   "direct_unassigned_mw": 0.0,
   "direct_unknown_mw": 0.0,
   "unnamed_remainder_mw": 0.0
  },
  "review_note": "Direct owners of the two operating generators (FICT, FIST) in the 2024 inventory (EIA-860 Schedule 4): Puget Sound Energy 49.85 percent and Capital Power Corporation 50.15 percent of each. Both owners' own filings state the same interest: Puget Energy and PSE FY2025 Form 10-K, Item 1 Electric Generation Resources (\"Frederickson Unit 1 (49.85% interest)\", 136 MW net maximum capacity) and Note 6 Utility Plant, jointly owned generating plants table (49.85 percent); Capital Power 2025 AIF p. 37 (50.15 percent undivided interest, tenants in common). Chosen as the second plant because every hop is stated in a filing fetched on 2026-09-22: PSE's chain is already curated for Colstrip and Capital Power is itself listed (TSX: CPX). The runner-up, Hermiston (plant:eia:54761), has a co-owner whose own FERC filing states control by Sumitomo Corporation without a share (accession 20260731-5362), so its second chain would stop at the first hop. No transfer after the inventory year: Capital Power's acquisition closed 2023-12-28. Since 2025-10-01 PSE tolls the other share (PSE 10-K Note 9 Leases: a tolling agreement for a 132.5 MW natural gas combined cycle facility commenced October 1, 2025; AIF p. 37: PSE's tolling agreement active from October 2025 to October 2030), a supply relationship that changes no share. EIA-860 names Frederickson Power LP as operator; neither filing assigns the operator role, and the role is not an ownership share. Nameplate here (192.0 + 126.3 MW) differs from the AIF's 265 MW and PSE's 136 MW net figures, each on its own basis",
  "reviewer": "claude-w65",
  "roles": {
   "note": "The operator runs the plant; owners hold shares of its units; a parent holds shares of an owner. None of these is a wire to a customer.",
   "operator": {
    "entity_type": "Q",
    "entity_type_label": "Independent power producer",
    "id": "org:eia:56613",
    "name": "Frederickson Power LP"
   },
   "owners": [
    {
     "entity_type": "Q",
     "entity_type_label": "Independent power producer",
     "id": "org:eia:59365",
     "name": "Capital Power"
    },
    {
     "entity_type": "I",
     "entity_type_label": "Investor-owned utility",
     "id": "org:eia:15500",
     "name": "Puget Sound Energy"
    }
   ],
   "retail_suppliers": {
    "contract": "docs/entities.md#3-relationships-and-observations",
    "derivable": false,
    "note": "Who sells this plant's output to customers is a supply relationship (a contract, a portfolio claim or a disclosure), not an ownership share; an owner may sell its share wholesale, and a utility may serve customers from plants it does not own. Filed claims on this plant's output, where Washington's fuel-mix disclosure has any, appear in their own section.",
    "reason": "not_derivable_from_ownership"
   }
  },
  "source_ref": "ownership-parents",
  "top_level": [
   {
    "entity": {
     "id": "org:eia:59365",
     "name": "Capital Power Corporation"
    },
    "exposure": {
     "basis": "Sum over a plant's operating generators of nameplate MW x the direct owner's share x each stated hop share up the curated chain to this entity; computed only while every hop is stated; a share of the same physical MW as the direct owner's owned MW, never added to it",
     "coverage": null,
     "denominator": null,
     "evidence": "reported",
     "fact_id": "plant:eia:55818/parent/org:eia:59365#ownership_exposure_mw@2024",
     "label": "Parent-attributed exposure",
     "locator": "derived: sum over operating generators of nameplate MW x direct share x each stated hop share up to org:eia:59365; Capital Power Corporation Annual Information Form for the year ended December 31, 2025 (dated March 4, 2026; filed on SEDAR+), Market for Securities, p. 86: \"The Company's Common Shares trade on the Toronto Stock Exchange under the symbol of CPX\"; Business of Capital Power - U.S. Flexible Generation - Frederickson, p. 37: \"Capital Power has a 50.15% undivided ownership interest under a joint venture with Puget Sound Energy, whereby the parties are tenants in common\"",
     "maturity": "final",
     "method": "derived",
     "metric": "ownership_exposure_mw",
     "missing_reason": null,
     "note": null,
     "period": {
      "kind": "inventory_year",
      "note": "EIA-860 annual inventory; status as of the end of the reporting year",
      "report_date": "2024-01-01",
      "year": 2024
     },
     "precision": 1,
     "quality": "valid",
     "source_ref": "ownership-parents",
     "unit": "MW",
     "value": 159.627
    },
    "generators": [
     "FICT",
     "FIST"
    ],
    "kind": "publicly_held",
    "locator": "Capital Power Corporation Annual Information Form for the year ended December 31, 2025 (dated March 4, 2026; filed on SEDAR+), Market for Securities, p. 86: \"The Company's Common Shares trade on the Toronto Stock Exchange under the symbol of CPX\"; Business of Capital Power - U.S. Flexible Generation - Frederickson, p. 37: \"Capital Power has a 50.15% undivided ownership interest under a joint venture with Puget Sound Energy, whereby the parties are tenants in common\"",
    "note": "EIA utility 59365 is the direct owner as EIA-860 2024 names it; the AIF speaks of \"Capital Power\" on a consolidated basis and its Inter-Corporate Relationships table (p. 15) lists only subsidiaries above a 20 percent asset or revenue threshold, so the entity of record holding the undivided interest is not named. A Canadian AIF is the equivalent of Form 10-K; the company's own copy is cited and the filing of record is on sedarplus.ca. The acquisition from Atlantic Power & Utilities closed December 28, 2023 (p. 22), before the 2024 inventory year. Since October 2025 PSE tolls Capital Power's share (p. 37: \"as of October 2025, the tolling agreement with Puget Sound Energy is active and will expire in October 2030\"), a supply arrangement, not an ownership share. Principal shareholders are in the management information circular and are not curated",
    "source_url": "https://www.capitalpower.com/wp-content/uploads/2026/03/capital-power-2025-annual-information-form.pdf",
    "unresolved_parents": null,
    "via_direct_owners": [
     "org:eia:59365"
    ]
   },
   {
    "entity": {
     "id": "org:curated:puget-holdings-llc",
     "name": "Puget Holdings LLC"
    },
    "exposure": {
     "basis": "Sum over a plant's operating generators of nameplate MW x the direct owner's share x each stated hop share up the curated chain to this entity; computed only while every hop is stated; a share of the same physical MW as the direct owner's owned MW, never added to it",
     "coverage": null,
     "denominator": null,
     "evidence": "reported",
     "fact_id": "plant:eia:55818/parent/org:curated:puget-holdings-llc#ownership_exposure_mw@2024",
     "label": "Parent-attributed exposure",
     "locator": "derived: sum over operating generators of nameplate MW x direct share x each stated hop share up to org:curated:puget-holdings-llc; Part I Item 1: \"Puget Holdings is owned by a consortium of long-term infrastructure investors including the British Columbia Investment Management Corporation (BCIMC), the Alberta Investment Management Corporation (AIMCo), Ontario Municipal Employee Retirement System (OMERS), PGGM Vermogensbeheer B.V., Macquarie Washington Clean Energy Investment, L.P., and the Ontario Teachers' Pension Plan Board\"; Item 12 footnote 1 cites Schedule 13D/A of February 13, 2009",
     "maturity": "final",
     "method": "derived",
     "metric": "ownership_exposure_mw",
     "missing_reason": null,
     "note": "Stated up to this entity; the filing names parents above it without shares, so the MW is not split further",
     "period": {
      "kind": "inventory_year",
      "note": "EIA-860 annual inventory; status as of the end of the reporting year",
      "report_date": "2024-01-01",
      "year": 2024
     },
     "precision": 1,
     "quality": "valid",
     "source_ref": "ownership-parents",
     "unit": "MW",
     "value": 158.673
    },
    "generators": [
     "FICT",
     "FIST"
    ],
    "kind": "share_not_stated",
    "locator": "Part I Item 1: \"Puget Holdings is owned by a consortium of long-term infrastructure investors including the British Columbia Investment Management Corporation (BCIMC), the Alberta Investment Management Corporation (AIMCo), Ontario Municipal Employee Retirement System (OMERS), PGGM Vermogensbeheer B.V., Macquarie Washington Clean Energy Investment, L.P., and the Ontario Teachers' Pension Plan Board\"; Item 12 footnote 1 cites Schedule 13D/A of February 13, 2009",
    "note": "The filing states these parents without a share; the MW stays attributed here and is not split among them",
    "source_url": "https://www.sec.gov/Archives/edgar/data/1085392/000108539226000008/psd-20251231.htm",
    "unresolved_parents": [
     {
      "id": "org:curated:bci",
      "name": "British Columbia Investment Management Corporation",
      "relation": "fund_managed",
      "share_reason": "share_not_stated_in_source"
     },
     {
      "id": "org:curated:aimco",
      "name": "Alberta Investment Management Corporation",
      "relation": "fund_managed",
      "share_reason": "share_not_stated_in_source"
     },
     {
      "id": "org:curated:omers",
      "name": "Ontario Municipal Employees Retirement System",
      "relation": "fund_managed",
      "share_reason": "share_not_stated_in_source"
     },
     {
      "id": "org:curated:pggm",
      "name": "PGGM Vermogensbeheer B.V.",
      "relation": "fund_managed",
      "share_reason": "share_not_stated_in_source"
     },
     {
      "id": "org:curated:macquarie-washington-clean-energy-investment-lp",
      "name": "Macquarie Washington Clean Energy Investment, L.P.",
      "relation": "fund_managed",
      "share_reason": "share_not_stated_in_source"
     },
     {
      "id": "org:curated:ontario-teachers-pension-plan-board",
      "name": "Ontario Teachers' Pension Plan Board",
      "relation": "fund_managed",
      "share_reason": "share_not_stated_in_source"
     }
    ],
    "via_direct_owners": [
     "org:eia:15500"
    ]
   }
  ],
  "unit": "MW",
  "unknown_residual": {
   "basis": "Operating nameplate MW minus the exposure reaching every terminal entity of the curated chains: direct capacity with no established owner, unassigned direct fractions, and remainders where stated parent shares sum below one with no holder named",
   "coverage": null,
   "denominator": null,
   "evidence": "reported",
   "fact_id": "plant:eia:55818#ownership_unknown_residual_mw@2024",
   "label": "Unknown residual",
   "locator": "derived: nameplate_mw_op - sum of exposure at every terminal entity",
   "maturity": "final",
   "method": "derived",
   "metric": "ownership_unknown_residual_mw",
   "missing_reason": null,
   "note": "Zero means every operating MW reaches a named entity at the top of a stated chain; components say where any remainder comes from",
   "period": {
    "kind": "inventory_year",
    "note": "EIA-860 annual inventory; status as of the end of the reporting year",
    "report_date": "2024-01-01",
    "year": 2024
   },
   "precision": 1,
   "quality": "valid",
   "source_ref": "ownership-parents",
   "unit": "MW",
   "value": 0.0
  }
 },
 "ownership_rollup": {
  "basis": "Operating nameplate MW x ownership fraction, once per generator; reported schedule or EIA-860 schedule-4 default",
  "note": null,
  "owners": [
   {
    "bases": [
     "reported_schedule"
    ],
    "generators": 2,
    "owned_mw": 159.627,
    "owner": {
     "entity_type": "Q",
     "entity_type_label": "Independent power producer",
     "id": "org:eia:59365",
     "name": "Capital Power"
    }
   },
   {
    "bases": [
     "reported_schedule"
    ],
    "generators": 2,
    "owned_mw": 158.673,
    "owner": {
     "entity_type": "I",
     "entity_type_label": "Investor-owned utility",
     "id": "org:eia:15500",
     "name": "Puget Sound Energy"
    }
   }
  ],
  "unassigned_mw": 0.0,
  "unknown_coverage": {
   "eligible": 0,
   "included": 0,
   "unit": "native rows"
  },
  "unknown_mw": 0.0
 },
 "release_id": "20260929T050546Z-51ae0f7d3c78",
 "reporting": {
  "ba": {
   "code": "BPAT",
   "id": "ba:eia:BPAT",
   "name": "Bonneville Power Administration"
  },
  "ba_code_source": "BPAT",
  "frame_role": "core",
  "in_geographic_core": true,
  "in_reporting_frame": true,
  "inclusion_reason": "ba_in_frame_v1",
  "membership_review_status": "source",
  "reporter_frequency": "A"
 },
 "resource_group": "gas",
 "schema_version": "1.41.0",
 "source_name": "Frederickson Power LP",
 "sources": [
  "curated-aliases",
  "ownership-parents",
  "pudl-epa-eia-crosswalk",
  "pudl-epacems",
  "pudl-generators",
  "pudl-output",
  "pudl-ownership",
  "pudl-plants"
 ],
 "storage": null,
 "type": "plant",
 "updated_reason": null,
 "water": null
}
