{
 "aliases": [
  {
   "relation": "exact",
   "review_state": "source",
   "source_entity_id": "55749",
   "source_ref": "pudl-plants"
  }
 ],
 "citation_path": "citations/plant~eia~55749.html",
 "context": {
  "nearby_bpa_lines": [],
  "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": 0.13,
    "id": "line:hifld:204511",
    "name": "NORTHWESTERN ENERGY LLC - (MT) line 204511",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 0.73,
    "id": "line:hifld:206816",
    "name": "NORTHWESTERN ENERGY LLC - (MT) line 206816",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 0.73,
    "id": "line:hifld:207012",
    "name": "NORTHWESTERN ENERGY LLC - (MT) line 207012",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   },
   {
    "distance_km": 1.05,
    "id": "line:hifld:201399",
    "name": "CROSSOVER – HARDEN",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "230",
    "voltage_kv": 230.0
   },
   {
    "distance_km": 1.06,
    "id": "line:hifld:201403",
    "name": "HARDEN – COLSTRIP",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "230",
    "voltage_kv": 230.0
   },
   {
    "distance_km": 1.07,
    "id": "line:hifld:204498",
    "name": "TONGUE RIVER ELECTRIC COOP INC line 204498",
    "source_ref": "hifld-lines-2021",
    "type": "line",
    "voltage_class": "115-161",
    "voltage_kv": 115.0
   }
  ],
  "nearby_substations": [
   {
    "distance_km": 0.74,
    "id": "substation:hifld:204554",
    "kind": "SUBSTATION",
    "max_kv": 115.0,
    "name": "Unnamed substation",
    "source_ref": "hifld-substations-2022",
    "type": "substation"
   },
   {
    "distance_km": 1.07,
    "id": "substation:hifld:203571",
    "kind": "SUBSTATION",
    "max_kv": 230.0,
    "name": "HARDEN",
    "source_ref": "hifld-substations-2022",
    "type": "substation"
   },
   {
    "distance_km": 2.44,
    "id": "substation:hifld:205090",
    "kind": "SUBSTATION",
    "max_kv": 115.0,
    "name": "Unnamed substation",
    "source_ref": "hifld-substations-2022",
    "type": "substation"
   }
  ],
  "territories": [
   {
    "id": "territory:mtcoop:17",
    "name": "Big Horn County Electric CO-OP",
    "note": "Plant coordinate lies inside this approximate territory polygon; candidate only, not a supply or service relationship",
    "relation": "candidate",
    "source_ref": "mt-coop-territories"
   }
  ]
 },
 "coverage": {
  "generators_eligible": 1,
  "generators_operating": 1,
  "generators_published": 1,
  "output_years": [
   2015,
   2016,
   2017,
   2018,
   2019,
   2020,
   2021,
   2022,
   2023,
   2024
  ],
  "ownership_known_generators": 1
 },
 "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": [],
  "source_ref": "wa-fmd-2024-by-plant"
 },
 "emissions": {
  "all_units_monitored": true,
  "available": true,
  "combustion_mw": 115.7,
  "combustion_mw_monitored": 115.7,
  "conversion": {
   "short_tons_to_tonnes": 0.90718474
  },
  "crosswalk_source_ref": "pudl-epa-eia-crosswalk",
  "crosswalk_year": 2024,
  "evidence": "estimated",
  "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": 1,
     "included": 1,
     "unit": "combustion generators"
    },
    "denominator": null,
    "evidence": "estimated",
    "fact_id": "plant:eia:55749#co2_mass_tonnes@2024",
    "label": "CO2 mass, monitored units",
    "locator": "core_epacems__hourly_emissions.parquet; year=2024; plant_id_eia=55749",
    "maturity": "final",
    "method": "derived",
    "metric": "co2_mass_tonnes",
    "missing_reason": null,
    "note": "98.7% of operating unit-hours were flagged Measured; the rest follow Part 75 missing-data procedures, which are designed to err high",
    "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": 672021.6863045641
   },
   {
    "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": 1,
     "included": 1,
     "unit": "combustion generators"
    },
    "denominator": null,
    "evidence": "estimated",
    "fact_id": "plant:eia:55749#co2_mass_short_tons@2024",
    "label": "CO2 mass, monitored units, as filed",
    "locator": "core_epacems__hourly_emissions.parquet; year=2024; plant_id_eia=55749",
    "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": 740777.1060000018
   },
   {
    "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": "estimated",
    "fact_id": "plant:eia:55749#cems_gross_load_mwh@2024",
    "label": "Gross load of monitored units",
    "locator": "core_epacems__hourly_emissions.parquet; year=2024; plant_id_eia=55749",
    "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": 551109.81
   },
   {
    "basis": "Sum over the year of each monitored unit's reported hourly heat input",
    "coverage": null,
    "denominator": null,
    "evidence": "estimated",
    "fact_id": "plant:eia:55749#cems_heat_input_mmbtu@2024",
    "label": "Heat input of monitored units",
    "locator": "core_epacems__hourly_emissions.parquet; year=2024; plant_id_eia=55749",
    "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": 7068890.79400001
   },
   {
    "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:55749#cems_unit_operating_hours@2024",
    "label": "Unit operating hours, monitored units",
    "locator": "core_epacems__hourly_emissions.parquet; year=2024; plant_id_eia=55749",
    "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": 6270.99
   },
   {
    "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:55749#cems_hours_with_operation@2024",
    "label": "Hours in which a monitored unit ran",
    "locator": "core_epacems__hourly_emissions.parquet; year=2024; plant_id_eia=55749",
    "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": 6309.0
   },
   {
    "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:55749#cems_units_monitored@2024",
    "label": "EPA emissions units with CEMS rows",
    "locator": "core_epacems__hourly_emissions.parquet; year=2024; plant_id_eia=55749",
    "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:55749#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=55749",
    "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": 1.0
   },
   {
    "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:55749#cems_generators_total@2024",
    "label": "Combustion generators at the plant",
    "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55749",
    "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": 1.0
   },
   {
    "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": 6309,
     "included": 6228,
     "unit": "operating unit-hours"
    },
    "denominator": null,
    "evidence": "metered",
    "fact_id": "plant:eia:55749#cems_measured_share@2024",
    "label": "Share of operating unit-hours with measured CO2",
    "locator": "core_epacems__hourly_emissions.parquet; year=2024; plant_id_eia=55749",
    "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": 0.9871611982881597
   },
   {
    "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": 481001.00000000006
    },
    "evidence": "estimated",
    "fact_id": "plant:eia:55749#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": 1.3971315783222156
   },
   {
    "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": 551109.81
    },
    "evidence": "estimated",
    "fact_id": "plant:eia:55749#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": 1.219397067717891
   }
  ],
  "generators_monitored": 1,
  "generators_monitored_other": 0,
  "generators_total": 1,
  "generators_unmonitored": null,
  "history": [
   {
    "all_units_monitored": true,
    "available": true,
    "combustion_mw": 115.7,
    "combustion_mw_monitored": 115.7,
    "conversion": {
     "short_tons_to_tonnes": 0.90718474
    },
    "crosswalk_source_ref": "pudl-epa-eia-crosswalk",
    "crosswalk_year": 2023,
    "evidence": "estimated",
    "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": 1,
       "included": 1,
       "unit": "combustion generators"
      },
      "denominator": null,
      "evidence": "estimated",
      "fact_id": "plant:eia:55749#co2_mass_tonnes@2023",
      "label": "CO2 mass, monitored units",
      "locator": "core_epacems__hourly_emissions.parquet; year=2023; plant_id_eia=55749",
      "maturity": "final",
      "method": "derived",
      "metric": "co2_mass_tonnes",
      "missing_reason": null,
      "note": "96.2% of operating unit-hours were flagged Measured; the rest follow Part 75 missing-data procedures, which are designed to err high",
      "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": 655100.892863405
     },
     {
      "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": 1,
       "included": 1,
       "unit": "combustion generators"
      },
      "denominator": null,
      "evidence": "estimated",
      "fact_id": "plant:eia:55749#co2_mass_short_tons@2023",
      "label": "CO2 mass, monitored units, as filed",
      "locator": "core_epacems__hourly_emissions.parquet; year=2023; plant_id_eia=55749",
      "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": 722125.123999997
     },
     {
      "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": "estimated",
      "fact_id": "plant:eia:55749#cems_gross_load_mwh@2023",
      "label": "Gross load of monitored units",
      "locator": "core_epacems__hourly_emissions.parquet; year=2023; plant_id_eia=55749",
      "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": 504897.98
     },
     {
      "basis": "Sum over the year of each monitored unit's reported hourly heat input",
      "coverage": null,
      "denominator": null,
      "evidence": "estimated",
      "fact_id": "plant:eia:55749#cems_heat_input_mmbtu@2023",
      "label": "Heat input of monitored units",
      "locator": "core_epacems__hourly_emissions.parquet; year=2023; plant_id_eia=55749",
      "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": 6898018.355000002
     },
     {
      "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:55749#cems_unit_operating_hours@2023",
      "label": "Unit operating hours, monitored units",
      "locator": "core_epacems__hourly_emissions.parquet; year=2023; plant_id_eia=55749",
      "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": 6710.72
     },
     {
      "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:55749#cems_hours_with_operation@2023",
      "label": "Hours in which a monitored unit ran",
      "locator": "core_epacems__hourly_emissions.parquet; year=2023; plant_id_eia=55749",
      "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": 6752.0
     },
     {
      "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:55749#cems_units_monitored@2023",
      "label": "EPA emissions units with CEMS rows",
      "locator": "core_epacems__hourly_emissions.parquet; year=2023; plant_id_eia=55749",
      "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:55749#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=55749",
      "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": 1.0
     },
     {
      "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:55749#cems_generators_total@2023",
      "label": "Combustion generators at the plant",
      "locator": "out_eia__yearly_generators.parquet; report_date=2023-01-01; plant_id_eia=55749",
      "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": 1.0
     },
     {
      "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": 6752,
       "included": 6495,
       "unit": "operating unit-hours"
      },
      "denominator": null,
      "evidence": "metered",
      "fact_id": "plant:eia:55749#cems_measured_share@2023",
      "label": "Share of operating unit-hours with measured CO2",
      "locator": "core_epacems__hourly_emissions.parquet; year=2023; plant_id_eia=55749",
      "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": 0.9619372037914692
     },
     {
      "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": 435403.0
      },
      "evidence": "estimated",
      "fact_id": "plant:eia:55749#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": 1.5045851610195728
     },
     {
      "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": 504897.98
      },
      "evidence": "estimated",
      "fact_id": "plant:eia:55749#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": 1.29749160981671
     }
    ],
    "generators_monitored": 1,
    "generators_monitored_other": 0,
    "generators_total": 1,
    "generators_unmonitored": null,
    "hours_by_measurement": {
     "measured": 6495,
     "operating_without_code": 0,
     "other_code": 0,
     "substituted": 257,
     "unit": "operating unit-hours"
    },
    "measured_share": 0.9619372037914692,
    "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": 6228,
   "operating_without_code": 0,
   "other_code": 0,
   "substituted": 81,
   "unit": "operating unit-hours"
  },
  "measured_share": 0.9871611982881597,
  "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": [
  {
   "capacity_mw": 105.0,
   "date": "2020-10-13",
   "date_precision": "day",
   "event_id": "hardin-coal-crypto-mining-announced-2020",
   "event_type": "announced",
   "source_publisher": "Marathon Patent Group",
   "source_ref": "notable-lifecycle-events",
   "source_url": "https://www.globenewswire.com/news-release/2020/10/13/2107538/0/en/Marathon-Patent-Group-Announces-Joint-Venture-with-Beowulf-Energy-for-105-Megawatt-Bitcoin-Mining-Data-Center.html",
   "summary": "Marathon Patent Group and Beowulf Energy announced a joint venture to power a bitcoin mining data center from the coal-fired Hardin plant."
  },
  {
   "capacity_mw": null,
   "date": "2022-04-05",
   "date_precision": "day",
   "event_id": "hardin-marathon-withdrawal-2022",
   "event_type": "withdrawn",
   "source_publisher": "Marathon Digital Holdings",
   "source_ref": "notable-lifecycle-events",
   "source_url": "https://www.globenewswire.com/en/news-release/2022/04/05/2416672/0/en/Marathon-Digital-Holdings-Announces-Intent-To-Transition-Hardin-Montana-Bitcoin-Mining-Operations-to-More-Sustainable-Power-Sources.html",
   "summary": "Marathon Digital announced intent to move its bitcoin mining rigs off the coal-fired Hardin plant to lower-carbon power sources."
  }
 ],
 "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": 1,
    "included": 1,
    "unit": "operating generators"
   },
   "denominator": null,
   "evidence": "reported",
   "fact_id": "plant:eia:55749#nameplate_mw_op@2024",
   "label": "Nameplate capacity, operating generators",
   "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55749",
   "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": 115.7
  },
  {
   "basis": "Generator rows for the plant in the inventory year, any status",
   "coverage": null,
   "denominator": null,
   "evidence": "reported",
   "fact_id": "plant:eia:55749#generator_count@2024",
   "label": "Generators listed",
   "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55749",
   "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": 1.0
  },
  {
   "basis": "Generator rows with status code OP",
   "coverage": null,
   "denominator": null,
   "evidence": "reported",
   "fact_id": "plant:eia:55749#generator_count_op@2024",
   "label": "Operating generators",
   "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55749",
   "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": 1.0
  },
  {
   "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": 3,
    "included": 3,
    "unit": "plant x prime-mover x fuel rows"
   },
   "denominator": null,
   "evidence": "reported",
   "fact_id": "plant:eia:55749#net_generation_mwh@2024",
   "label": "Net generation",
   "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2024-01-01; plant_id_eia=55749",
   "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": 481001.00000000006
  },
  {
   "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": 115.7
   },
   "evidence": "reported",
   "fact_id": "plant:eia:55749#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": 0.4732823330861644
  }
 ],
 "generators": [
  {
   "dates": {
    "note": "EIA-860 reports month and year; day is a placeholder",
    "operating": "2006-03-01",
    "original_planned_operating": null,
    "planned_operating": null,
    "planned_retirement": null,
    "precision": "month",
    "retirement": null
   },
   "energy_source": {
    "code": "SUB",
    "fuel_group": "coal",
    "label": "subbituminous_coal"
   },
   "facts": [
    {
     "basis": "Generator nameplate capacity as reported on EIA-860",
     "coverage": null,
     "denominator": null,
     "evidence": "reported",
     "fact_id": "generator:eia:55749:UNT1#capacity_mw@2024",
     "label": "Nameplate capacity",
     "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55749; generator_id=UNT1",
     "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": 115.7
    },
    {
     "basis": "Reported or source-estimated net summer capability",
     "coverage": null,
     "denominator": null,
     "evidence": "reported",
     "fact_id": "generator:eia:55749:UNT1#summer_capacity_mw@2024",
     "label": "Net summer capacity",
     "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55749; generator_id=UNT1",
     "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": 107.0
    },
    {
     "basis": "Reported or source-estimated net winter capability",
     "coverage": null,
     "denominator": null,
     "evidence": "reported",
     "fact_id": "generator:eia:55749:UNT1#winter_capacity_mw@2024",
     "label": "Net winter capacity",
     "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55749; generator_id=UNT1",
     "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": 107.0
    }
   ],
   "generator_id": "UNT1",
   "id": "generator:eia:55749:UNT1",
   "is_storage": false,
   "operator": {
    "entity_type": "Q",
    "entity_type_label": "Independent power producer",
    "id": "org:eia:16233",
    "name": "Heorot Power Management"
   },
   "ownership": {
    "basis": "eia860_schedule4_default",
    "invalid_shares": false,
    "note": null,
    "shares": [
     {
      "basis": "eia860_schedule4_default",
      "evidence": "reported",
      "fraction": 1.0,
      "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=55749; generator_id=UNT1; ownership_code=S; rule=eia860_schedule4_default",
      "method": "derived",
      "owned_mw": 115.7,
      "owner": {
       "entity_type": "Q",
       "entity_type_label": "Independent power producer",
       "id": "org:eia:16233",
       "name": "Heorot Power Management"
      },
      "reason": "eia860_schedule4_default",
      "source_ref": "pudl-generators"
     }
    ],
    "unassigned_fraction": 0.0,
    "unassigned_mw": 0.0,
    "unknown_reason": null
   },
   "prime_mover": {
    "code": "ST",
    "label": "steam_turbine"
   },
   "resource_group": "coal",
   "status": {
    "category": "existing",
    "code": "OP",
    "label": "operating"
   },
   "storage": null,
   "technology": "Conventional Steam Coal"
  }
 ],
 "id": "plant:eia:55749",
 "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": 1,
     "included": 1,
     "unit": "current and historical generators",
     "unknown_current_state": 0
    },
    "denominator": null,
    "evidence": "reported",
    "fact_id": "plant:eia:55749#latest_nameplate_mw_op",
    "label": "Operating nameplate capacity, latest inventory",
    "locator": "Preliminary Monthly Electric Generator Inventory, August 2026; plant_id_eia=55749; 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": 115.7
   },
   {
    "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": 1,
     "included": 1,
     "unit": "current and historical generators"
    },
    "denominator": null,
    "evidence": "reported",
    "fact_id": "plant:eia:55749#latest_nameplate_mw_planned",
    "label": "Planned nameplate capacity, latest inventory",
    "locator": "Preliminary Monthly Electric Generator Inventory, August 2026; plant_id_eia=55749; 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": 1,
     "included": 1,
     "unit": "current and historical generators"
    },
    "denominator": null,
    "evidence": "reported",
    "fact_id": "plant:eia:55749#latest_nameplate_mw_retired",
    "label": "Retired or cancelled nameplate capacity, latest inventory",
    "locator": "Preliminary Monthly Electric Generator Inventory, August 2026; plant_id_eia=55749; 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": 115.7,
    "changed_on": "2026-08-01",
    "dates": {
     "operating": "2006-03-01",
     "planned_operating": null,
     "planned_retirement": null,
     "precision": "month",
     "retirement": null
    },
    "generator_id": "UNT1",
    "id": "generator:eia:55749:UNT1",
    "in_baseline": true,
    "life": "operating",
    "resource_group": "coal",
    "status": {
     "category": "existing",
     "code": "OP",
     "label": "operating"
    },
    "technology": "Conventional Steam Coal"
   }
  ]
 },
 "location": {
  "city": "Hardin",
  "county": "Big Horn",
  "datum": null,
  "lat": 45.7578,
  "locator": "out_eia__yearly_plants.parquet; report_date=2024-01-01; plant_id_eia=55749",
  "lon": -107.6,
  "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": "MT",
  "timezone": "America/Denver"
 },
 "name": "Hardin Generator Project",
 "operator": {
  "entity_type": "Q",
  "entity_type_label": "Independent power producer",
  "id": "org:eia:16233",
  "name": "Heorot Power Management"
 },
 "output": {
  "annual": [
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 2108.694,
      "prime_mover": {
       "code": "ST",
       "label": "steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "SUB",
       "fuel_group": "coal",
       "label": "subbituminous_coal"
      },
      "maturity": "final",
      "net_generation_mwh": 487881.306,
      "prime_mover": {
       "code": "ST",
       "label": "steam_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:55749#net_generation_mwh@2015",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2015-01-01; plant_id_eia=55749",
     "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": 489990.0
    },
    "rows": 2,
    "year": 2015
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 1542.117,
      "prime_mover": {
       "code": "ST",
       "label": "steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "SUB",
       "fuel_group": "coal",
       "label": "subbituminous_coal"
      },
      "maturity": "final",
      "net_generation_mwh": 347566.88300000003,
      "prime_mover": {
       "code": "ST",
       "label": "steam_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:55749#net_generation_mwh@2016",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2016-01-01; plant_id_eia=55749",
     "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": 349109.00000000006
    },
    "rows": 2,
    "year": 2016
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 916.6010000000001,
      "prime_mover": {
       "code": "ST",
       "label": "steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "SUB",
       "fuel_group": "coal",
       "label": "subbituminous_coal"
      },
      "maturity": "final",
      "net_generation_mwh": 117428.399,
      "prime_mover": {
       "code": "ST",
       "label": "steam_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:55749#net_generation_mwh@2017",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2017-01-01; plant_id_eia=55749",
     "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": 118345.0
    },
    "rows": 2,
    "year": 2017
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 917.8970000000002,
      "prime_mover": {
       "code": "ST",
       "label": "steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "SUB",
       "fuel_group": "coal",
       "label": "subbituminous_coal"
      },
      "maturity": "final",
      "net_generation_mwh": 146460.103,
      "prime_mover": {
       "code": "ST",
       "label": "steam_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:55749#net_generation_mwh@2018",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2018-01-01; plant_id_eia=55749",
     "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": 147378.0
    },
    "rows": 2,
    "year": 2018
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 2003.407,
      "prime_mover": {
       "code": "ST",
       "label": "steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "SUB",
       "fuel_group": "coal",
       "label": "subbituminous_coal"
      },
      "maturity": "final",
      "net_generation_mwh": 135172.593,
      "prime_mover": {
       "code": "ST",
       "label": "steam_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:55749#net_generation_mwh@2019",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2019-01-01; plant_id_eia=55749",
     "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": 137176.0
    },
    "rows": 2,
    "year": 2019
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 2475.996,
      "prime_mover": {
       "code": "ST",
       "label": "steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "SUB",
       "fuel_group": "coal",
       "label": "subbituminous_coal"
      },
      "maturity": "final",
      "net_generation_mwh": 49230.004,
      "prime_mover": {
       "code": "ST",
       "label": "steam_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:55749#net_generation_mwh@2020",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2020-01-01; plant_id_eia=55749",
     "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": 51706.0
    },
    "rows": 2,
    "year": 2020
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 2892.648,
      "prime_mover": {
       "code": "ST",
       "label": "steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "SUB",
       "fuel_group": "coal",
       "label": "subbituminous_coal"
      },
      "maturity": "final",
      "net_generation_mwh": 478781.352,
      "prime_mover": {
       "code": "ST",
       "label": "steam_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:55749#net_generation_mwh@2021",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2021-01-01; plant_id_eia=55749",
     "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": 481674.0
    },
    "rows": 2,
    "year": 2021
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 2738.465,
      "prime_mover": {
       "code": "ST",
       "label": "steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "SUB",
       "fuel_group": "coal",
       "label": "subbituminous_coal"
      },
      "maturity": "final",
      "net_generation_mwh": 491169.535,
      "prime_mover": {
       "code": "ST",
       "label": "steam_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:55749#net_generation_mwh@2022",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2022-01-01; plant_id_eia=55749",
     "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": 493908.0
    },
    "rows": 2,
    "year": 2022
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 4571.688,
      "prime_mover": {
       "code": "ST",
       "label": "steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "SUB",
       "fuel_group": "coal",
       "label": "subbituminous_coal"
      },
      "maturity": "final",
      "net_generation_mwh": 430831.312,
      "prime_mover": {
       "code": "ST",
       "label": "steam_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:55749#net_generation_mwh@2023",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2023-01-01; plant_id_eia=55749",
     "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": 435403.0
    },
    "rows": 2,
    "year": 2023
   },
   {
    "components": [
     {
      "energy_source": {
       "code": "BIT",
       "fuel_group": "coal",
       "label": "bituminous_coal"
      },
      "maturity": "final",
      "net_generation_mwh": 7597.777,
      "prime_mover": {
       "code": "ST",
       "label": "steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "NG",
       "fuel_group": "gas",
       "label": "natural_gas"
      },
      "maturity": "final",
      "net_generation_mwh": 4289.4310000000005,
      "prime_mover": {
       "code": "ST",
       "label": "steam_turbine"
      }
     },
     {
      "energy_source": {
       "code": "SUB",
       "fuel_group": "coal",
       "label": "subbituminous_coal"
      },
      "maturity": "final",
      "net_generation_mwh": 469113.7920000001,
      "prime_mover": {
       "code": "ST",
       "label": "steam_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": 3,
      "included": 3,
      "unit": "plant x prime-mover x fuel rows"
     },
     "denominator": null,
     "evidence": "reported",
     "fact_id": "plant:eia:55749#net_generation_mwh@2024",
     "label": "Net generation",
     "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2024-01-01; plant_id_eia=55749",
     "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": 481001.00000000006
    },
    "rows": 3,
    "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": {
    "2024": "eia923-raw-2024"
   },
   "label": "Net generation, monthly",
   "locator": "out_eia923__monthly_generation_fuel_combined.parquet; plant_id_eia=55749",
   "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:55749#net_generation_mwh/monthly",
   "source_ref": "pudl-output-monthly",
   "unit": "MWh",
   "values": [
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2024-02-01T00:00:00Z",
     "period_start": "2024-01-01T00:00:00Z",
     "quality": "valid",
     "rows": 3,
     "value": 59555.0
    },
    {
     "hours": 696,
     "maturity": "final",
     "period_end": "2024-03-01T00:00:00Z",
     "period_start": "2024-02-01T00:00:00Z",
     "quality": "valid",
     "rows": 3,
     "value": 57637.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2024-04-01T00:00:00Z",
     "period_start": "2024-03-01T00:00:00Z",
     "quality": "valid",
     "rows": 3,
     "value": 59555.0
    },
    {
     "hours": 720,
     "maturity": "final",
     "period_end": "2024-05-01T00:00:00Z",
     "period_start": "2024-04-01T00:00:00Z",
     "quality": "valid",
     "rows": 3,
     "value": 46325.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2024-06-01T00:00:00Z",
     "period_start": "2024-05-01T00:00:00Z",
     "quality": "valid",
     "rows": 3,
     "value": 6380.0
    },
    {
     "hours": 720,
     "maturity": "final",
     "period_end": "2024-07-01T00:00:00Z",
     "period_start": "2024-06-01T00:00:00Z",
     "quality": "valid",
     "rows": 3,
     "value": 0.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2024-08-01T00:00:00Z",
     "period_start": "2024-07-01T00:00:00Z",
     "quality": "valid",
     "rows": 3,
     "value": 12890.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2024-09-01T00:00:00Z",
     "period_start": "2024-08-01T00:00:00Z",
     "quality": "valid",
     "rows": 3,
     "value": 50085.0
    },
    {
     "hours": 720,
     "maturity": "final",
     "period_end": "2024-10-01T00:00:00Z",
     "period_start": "2024-09-01T00:00:00Z",
     "quality": "valid",
     "rows": 3,
     "value": 39833.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2024-11-01T00:00:00Z",
     "period_start": "2024-10-01T00:00:00Z",
     "quality": "valid",
     "rows": 3,
     "value": 58077.0
    },
    {
     "hours": 720,
     "maturity": "final",
     "period_end": "2024-12-01T00:00:00Z",
     "period_start": "2024-11-01T00:00:00Z",
     "quality": "valid",
     "rows": 3,
     "value": 40928.0
    },
    {
     "hours": 744,
     "maturity": "final",
     "period_end": "2025-01-01T00:00:00Z",
     "period_start": "2024-12-01T00:00:00Z",
     "quality": "valid",
     "rows": 3,
     "value": 49736.0
    }
   ],
   "years_eligible": [
    2024
   ],
   "years_excluded": [
    {
     "frequency_code": "A",
     "reason": "annual_reporter",
     "year": 2015
    },
    {
     "frequency_code": "A",
     "reason": "annual_reporter",
     "year": 2016
    },
    {
     "frequency_code": "A",
     "reason": "annual_reporter",
     "year": 2017
    },
    {
     "frequency_code": null,
     "reason": "frequency_unknown",
     "year": 2018
    },
    {
     "frequency_code": null,
     "reason": "frequency_unknown",
     "year": 2019
    },
    {
     "frequency_code": null,
     "reason": "frequency_unknown",
     "year": 2020
    },
    {
     "frequency_code": null,
     "reason": "frequency_unknown",
     "year": 2021
    },
    {
     "frequency_code": null,
     "reason": "frequency_unknown",
     "year": 2022
    },
    {
     "frequency_code": null,
     "reason": "frequency_unknown",
     "year": 2023
    }
   ]
  },
  "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": "unknown"
 },
 "ownership_paths": {
  "available": false,
  "note": "Direct owners and their shares are in ownership_rollup and on each generator; no parent chain is curated for this plant, so no parent-attributed MW exists and none is implied",
  "reason": "parent_chain_not_curated",
  "source_ref": "ownership-parents"
 },
 "ownership_rollup": {
  "basis": "Operating nameplate MW x ownership fraction, once per generator; reported schedule or EIA-860 schedule-4 default",
  "note": null,
  "owners": [
   {
    "bases": [
     "eia860_schedule4_default"
    ],
    "generators": 1,
    "owned_mw": 115.7,
    "owner": {
     "entity_type": "Q",
     "entity_type_label": "Independent power producer",
     "id": "org:eia:16233",
     "name": "Heorot Power Management"
    }
   }
  ],
  "unassigned_mw": 0.0,
  "unknown_coverage": {
   "eligible": 0,
   "included": 0,
   "unit": "native rows"
  },
  "unknown_mw": 0.0
 },
 "release_id": "20260929T050546Z-51ae0f7d3c78",
 "reporting": {
  "ba": {
   "code": "NWMT",
   "id": "ba:eia:NWMT",
   "name": "NorthWestern Energy"
  },
  "ba_code_source": "NWMT",
  "frame_role": "ring",
  "in_geographic_core": true,
  "in_reporting_frame": true,
  "inclusion_reason": "ba_in_frame_v1",
  "membership_review_status": "source",
  "reporter_frequency": null
 },
 "resource_group": "coal",
 "schema_version": "1.41.0",
 "source_name": null,
 "sources": [
  "pudl-epa-eia-crosswalk",
  "pudl-epacems",
  "pudl-generators",
  "pudl-output",
  "pudl-ownership",
  "pudl-plants"
 ],
 "storage": null,
 "type": "plant",
 "updated_reason": null,
 "water": null
}