{ "aliases": [ { "relation": "exact", "review_state": "source", "source_entity_id": "3921", "source_ref": "pudl-plants" }, { "basis": "EHA 2026 EIA_PtID 3921 = EIA plant; state WA; EHA point 0.53 km from EIA point; names share a token; HILARRI v4 links EHA id to NID WA00299 (Chief Joseph Dam, Columbia River), NID point 0.22 km from EIA point; NID purposes: Hydroelectric;Recreation", "evidence_url": "https://hydrosource.ornl.gov/data/datasets/hilarri-v4/", "kind": "hydro_plant", "name": "Chief Joseph", "note": "Hydropower is a reported purpose in the NID. Associated power plant is included in the EHA.", "relation": "exact", "review_state": "reviewed", "reviewed_on": "2026-09-21", "source_entity_id": "hc0215_p01", "source_ref": "ornl-eha-2026", "source_url": "https://hydrosource.ornl.gov/data/datasets/eha-plant-2026/", "water": "Columbia River" }, { "basis": "EHA 2026 EIA_PtID 3921 = EIA plant; state WA; EHA point 0.53 km from EIA point; names share a token; HILARRI v4 links EHA id to NID WA00299 (Chief Joseph Dam, Columbia River), NID point 0.22 km from EIA point; NID purposes: Hydroelectric;Recreation", "evidence_url": "https://hydrosource.ornl.gov/data/datasets/hilarri-v4/", "kind": "dam", "name": "Chief Joseph Dam", "note": "Hydropower is a reported purpose in the NID. Associated power plant is included in the EHA.", "relation": "component", "review_state": "reviewed", "reviewed_on": "2026-09-21", "source_entity_id": "WA00299", "source_ref": "usace-nid", "source_url": "https://nid.sec.usace.army.mil/" }, { "basis": "EHA 2026 EIA_PtID 3921 = EIA plant; state WA; EHA point 0.53 km from EIA point; names share a token; HILARRI v4 links EHA id to NID WA00299 (Chief Joseph Dam, Columbia River), NID point 0.22 km from EIA point; NID purposes: Hydroelectric;Recreation", "evidence_url": "https://hydrosource.ornl.gov/data/datasets/hilarri-v4/", "ids": { "grand_id": null, "huc12": "170200050405", "nhdplusv2_comid": "23057772" }, "kind": "water_links", "name": null, "note": "Hydropower is a reported purpose in the NID. Associated power plant is included in the EHA.", "relation": "exact", "review_state": "reviewed", "reviewed_on": "2026-09-21", "source_entity_id": "2280", "source_ref": "ornl-hilarri-v4", "source_url": "https://hydrosource.ornl.gov/data/datasets/hilarri-v4/" }, { "kind": "display_name", "note": "operator name for the dam", "relation": "exact", "review_state": "reviewed", "reviewed_on": "2026-09-18", "source_entity_id": "Chief Joseph Dam", "source_ref": "curated-aliases", "source_url": "https://www.nws.usace.army.mil/Missions/Civil-Works/Locks-and-Dams/" } ], "citation_path": "citations/plant~eia~3921.html", "context": { "nearby_bpa_lines": [ { "distance_km": 0.01, "id": "line:bpa:CJPH-CHJO-3", "name": "Chief Joseph PH-Chief Joseph No 3", "source_ref": "bpa-lines", "type": "line", "voltage_class": "230", "voltage_kv": 230.0 }, { "distance_km": 0.09, "id": "line:bpa:CJPH-CHJO-2", "name": "Chief Joseph PH-Chief Joseph No 2", "source_ref": "bpa-lines", "type": "line", "voltage_class": "230", "voltage_kv": 230.0 }, { "distance_km": 0.12, "id": "line:bpa:CJPH-CHJO-4", "name": "Chief Joseph PH-Chief Joseph No 4", "source_ref": "bpa-lines", "type": "line", "voltage_class": "230", "voltage_kv": 230.0 }, { "distance_km": 0.18, "id": "line:bpa:CJPH-CHJO-1", "name": "Chief Joseph PH-Chief Joseph No 1", "source_ref": "bpa-lines", "type": "line", "voltage_class": "230", "voltage_kv": 230.0 }, { "distance_km": 0.19, "id": "line:bpa:CJPH-CHJO-5", "name": "Chief Joseph PH-Chief Joseph No 5", "source_ref": "bpa-lines", "type": "line", "voltage_class": "500", "voltage_kv": 500.0 }, { "distance_km": 0.27, "id": "line:bpa:CJPH-CHJO-6", "name": "Chief Joseph PH-Chief Joseph No 6", "source_ref": "bpa-lines", "type": "line", "voltage_class": "500", "voltage_kv": 500.0 }, { "distance_km": 0.88, "id": "line:bpa:CHJO-EOMK-1", "name": "Chief Joseph-East Omak No 1", "source_ref": "bpa-lines", "type": "line", "voltage_class": "230", "voltage_kv": 230.0 }, { "distance_km": 0.88, "id": "line:bpa:EOMKT-GCFO-1", "name": "East Omak Tap to Grand Coulee-Foster Creek No 1", "source_ref": "bpa-lines", "type": "line", "voltage_class": "115-161", "voltage_kv": 115.0 }, { "distance_km": 0.99, "id": "line:bpa:GCOU-FOST-1", "name": "Grand Coulee-Foster Creek No 1", "source_ref": "bpa-lines", "type": "line", "voltage_class": "115-161", "voltage_kv": 115.0 }, { "distance_km": 1.1, "id": "line:bpa:FOST-CHJO-1", "name": "Foster Creek-Chief Joseph No 1", "source_ref": "bpa-lines", "type": "line", "voltage_class": "under-100", "voltage_kv": 13.8 }, { "distance_km": 1.26, "id": "line:bpa:CHJO-MONE-1", "name": "Chief Joseph-Monroe No 1", "source_ref": "bpa-lines", "type": "line", "voltage_class": "500", "voltage_kv": 500.0 }, { "distance_km": 1.27, "id": "line:bpa:CHJO-SCLR-1", "name": "Chief Joseph-Sickler No 1", "source_ref": "bpa-lines", "type": "line", "voltage_class": "500", "voltage_kv": 500.0 }, { "distance_km": 1.28, "id": "line:bpa:GCOU-CHJO-3", "name": "Grand Coulee-Chief Joseph No 3", "source_ref": "bpa-lines", "type": "line", "voltage_class": "500", "voltage_kv": 500.0 }, { "distance_km": 1.32, "id": "line:bpa:CHJO-SNOH-4", "name": "Chief Joseph-Snohomish No 4", "source_ref": "bpa-lines", "type": "line", "voltage_class": "345", "voltage_kv": 345.0 }, { "distance_km": 1.37, "id": "line:bpa:GCOU-CHJO-1", "name": "Grand Coulee-Chief Joseph No 1", "source_ref": "bpa-lines", "type": "line", "voltage_class": "230", "voltage_kv": 230.0 }, { "distance_km": 1.39, "id": "line:bpa:CHJO-SNOH-3", "name": "Chief Joseph-Snohomish No 3", "source_ref": "bpa-lines", "type": "line", "voltage_class": "345", "voltage_kv": 345.0 }, { "distance_km": 1.43, "id": "line:bpa:GCOU-CHJO-2", "name": "Grand Coulee-Chief Joseph No 2", "source_ref": "bpa-lines", "type": "line", "voltage_class": "230", "voltage_kv": 230.0 } ], "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": 0.01, "id": "line:bpa:CJPH-CHJO-3", "name": "Chief Joseph PH-Chief Joseph No 3", "source_ref": "bpa-lines", "type": "line", "voltage_class": "230", "voltage_kv": 230.0 }, { "distance_km": 0.07, "id": "line:hifld:211434", "name": "FOSTER CREEK – CHIEF JOSEPH", "source_ref": "hifld-lines-2021", "type": "line", "voltage_class": "115-161", "voltage_kv": 115.0 }, { "distance_km": 0.09, "id": "line:bpa:CJPH-CHJO-2", "name": "Chief Joseph PH-Chief Joseph No 2", "source_ref": "bpa-lines", "type": "line", "voltage_class": "230", "voltage_kv": 230.0 }, { "distance_km": 0.12, "id": "line:bpa:CJPH-CHJO-4", "name": "Chief Joseph PH-Chief Joseph No 4", "source_ref": "bpa-lines", "type": "line", "voltage_class": "230", "voltage_kv": 230.0 }, { "distance_km": 0.18, "id": "line:bpa:CJPH-CHJO-1", "name": "Chief Joseph PH-Chief Joseph No 1", "source_ref": "bpa-lines", "type": "line", "voltage_class": "230", "voltage_kv": 230.0 }, { "distance_km": 0.19, "id": "line:bpa:CJPH-CHJO-5", "name": "Chief Joseph PH-Chief Joseph No 5", "source_ref": "bpa-lines", "type": "line", "voltage_class": "500", "voltage_kv": 500.0 }, { "distance_km": 0.27, "id": "line:bpa:CJPH-CHJO-6", "name": "Chief Joseph PH-Chief Joseph No 6", "source_ref": "bpa-lines", "type": "line", "voltage_class": "500", "voltage_kv": 500.0 }, { "distance_km": 0.88, "id": "line:bpa:CHJO-EOMK-1", "name": "Chief Joseph-East Omak No 1", "source_ref": "bpa-lines", "type": "line", "voltage_class": "230", "voltage_kv": 230.0 }, { "distance_km": 0.88, "id": "line:bpa:EOMKT-GCFO-1", "name": "East Omak Tap to Grand Coulee-Foster Creek No 1", "source_ref": "bpa-lines", "type": "line", "voltage_class": "115-161", "voltage_kv": 115.0 }, { "distance_km": 0.99, "id": "line:bpa:GCOU-FOST-1", "name": "Grand Coulee-Foster Creek No 1", "source_ref": "bpa-lines", "type": "line", "voltage_class": "115-161", "voltage_kv": 115.0 }, { "distance_km": 1.1, "id": "line:hifld:211433", "name": "FOSTER CREEK – BREWSTER", "source_ref": "hifld-lines-2021", "type": "line", "voltage_class": "115-161", "voltage_kv": 115.0 }, { "distance_km": 1.1, "id": "line:bpa:FOST-CHJO-1", "name": "Foster Creek-Chief Joseph No 1", "source_ref": "bpa-lines", "type": "line", "voltage_class": "under-100", "voltage_kv": 13.8 }, { "distance_km": 1.15, "id": "line:hifld:206972", "name": "WELLS – FOSTER CREEK", "source_ref": "hifld-lines-2021", "type": "line", "voltage_class": "230", "voltage_kv": 230.0 }, { "distance_km": 1.26, "id": "line:bpa:CHJO-MONE-1", "name": "Chief Joseph-Monroe No 1", "source_ref": "bpa-lines", "type": "line", "voltage_class": "500", "voltage_kv": 500.0 }, { "distance_km": 1.27, "id": "line:bpa:CHJO-SCLR-1", "name": "Chief Joseph-Sickler No 1", "source_ref": "bpa-lines", "type": "line", "voltage_class": "500", "voltage_kv": 500.0 }, { "distance_km": 1.28, "id": "line:bpa:GCOU-CHJO-3", "name": "Grand Coulee-Chief Joseph No 3", "source_ref": "bpa-lines", "type": "line", "voltage_class": "500", "voltage_kv": 500.0 }, { "distance_km": 1.32, "id": "line:bpa:CHJO-SNOH-4", "name": "Chief Joseph-Snohomish No 4", "source_ref": "bpa-lines", "type": "line", "voltage_class": "345", "voltage_kv": 345.0 }, { "distance_km": 1.37, "id": "line:bpa:GCOU-CHJO-1", "name": "Grand Coulee-Chief Joseph No 1", "source_ref": "bpa-lines", "type": "line", "voltage_class": "230", "voltage_kv": 230.0 }, { "distance_km": 1.39, "id": "line:bpa:CHJO-SNOH-3", "name": "Chief Joseph-Snohomish No 3", "source_ref": "bpa-lines", "type": "line", "voltage_class": "345", "voltage_kv": 345.0 }, { "distance_km": 1.43, "id": "line:bpa:GCOU-CHJO-2", "name": "Grand Coulee-Chief Joseph No 2", "source_ref": "bpa-lines", "type": "line", "voltage_class": "230", "voltage_kv": 230.0 } ], "nearby_substations": [ { "distance_km": 1.15, "id": "substation:hifld:200457", "kind": "SUBSTATION", "max_kv": 230.0, "name": "FOSTER CREEK", "source_ref": "hifld-substations-2022", "type": "substation" }, { "distance_km": 1.29, "id": "substation:hifld:200456", "kind": "SUBSTATION", "max_kv": 500.0, "name": "CHIEF JOSEPH", "source_ref": "hifld-substations-2022", "type": "substation" } ], "territories": [ { "id": "territory:waecy:11", "name": "Douglas County PUD #1", "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": 27, "generators_operating": 24, "generators_published": 27, "output_years": [ 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 ], "ownership_known_generators": 27 }, "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": "Hydro", "claim_type": "Utility Specified", "claimant_id": 97, "claimant_name": "Snohomish County PUD #1", "mwh": 3461.0, "org": { "id": "org:eia:17470", "name": "Snohomish County PUD" }, "rec": "True", "report_year": 2024 } ], "source_ref": "wa-fmd-2024-by-plant" }, "emissions": { "available": false, "generators_monitored": 0, "generators_total": 0, "history": [], "note": "This plant has no coal, gas, oil or waste generator, so it has no combustion unit for EPA to monitor and no CEMS data exists. That is not a claim of zero emissions: the atlas reports only what EPA-monitored units filed.", "reason": "not_applicable", "source_ref": "pudl-epacems", "units_monitored": 0, "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": 24, "included": 24, "unit": "operating generators" }, "denominator": null, "evidence": "reported", "fact_id": "plant:eia:3921#nameplate_mw_op@2024", "label": "Nameplate capacity, operating generators", "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3921", "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": 2184.8 }, { "basis": "Generator rows for the plant in the inventory year, any status", "coverage": null, "denominator": null, "evidence": "reported", "fact_id": "plant:eia:3921#generator_count@2024", "label": "Generators listed", "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3921", "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": 27.0 }, { "basis": "Generator rows with status code OP", "coverage": null, "denominator": null, "evidence": "reported", "fact_id": "plant:eia:3921#generator_count_op@2024", "label": "Operating generators", "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3921", "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": 24.0 }, { "basis": "Sum of generator nameplate MW with status category existing and code other than OP (SB, OS, OA)", "coverage": null, "denominator": null, "evidence": "reported", "fact_id": "plant:eia:3921#nameplate_mw_existing_not_operating@2024", "label": "Nameplate capacity, existing but not operating (standby / out of service)", "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3921", "maturity": "final", "method": "derived", "metric": "nameplate_mw_existing_not_operating", "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": 271.4 }, { "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": 1, "included": 1, "unit": "plant x prime-mover x fuel rows" }, "denominator": null, "evidence": "reported", "fact_id": "plant:eia:3921#net_generation_mwh@2024", "label": "Net generation", "locator": "out_eia923__yearly_generation_fuel_combined.parquet; report_date=2024-01-01; plant_id_eia=3921", "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": 9227828.0 }, { "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": 2184.8 }, "evidence": "reported", "fact_id": "plant:eia:3921#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": 0.48083434045723417 } ], "generators": [ { "dates": { "note": "EIA-860 reports month and year; day is a placeholder", "operating": "1958-10-01", "original_planned_operating": null, "planned_operating": null, "planned_retirement": null, "precision": "month", "retirement": null }, "energy_source": { "code": "WAT", "fuel_group": "hydro", "label": "water" }, "facts": [ { "basis": "Generator nameplate capacity as reported on EIA-860", "coverage": null, "denominator": null, "evidence": "reported", "fact_id": "generator:eia:3921:1#capacity_mw@2024", "label": "Nameplate capacity", "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3921; generator_id=1", "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": 88.2 }, { "basis": "Reported or source-estimated net summer capability", "coverage": null, "denominator": null, "evidence": "reported", "fact_id": "generator:eia:3921:1#summer_capacity_mw@2024", "label": "Net summer capacity", "locator": "out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3921; generator_id=1", "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": 88.2 }, { "basis": "Reported or source-estimated net winter capability", "coverage": null, "denominator": null, "evidence": "reported", "fact_id": "generator:eia:3921:1#winter_capacity_mw@2024", "label": "Net winter capacity", "locator": "out_eia__yearly_generators.parquet; 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{ "category": "existing", "code": "OA", "label": "out_of_service_short_term" }, "technology": "Conventional Hydroelectric" }, { "capacity_mw": 88.2, "changed_on": "2026-08-01", "dates": { "operating": "1955-09-01", "planned_operating": null, "planned_retirement": null, "precision": "month", "retirement": null }, "generator_id": "11", "id": "generator:eia:3921:11", "in_baseline": true, "life": "standby_or_out_of_service", "resource_group": "hydro", "status": { "category": "existing", "code": "OA", "label": "out_of_service_short_term" }, "technology": "Conventional Hydroelectric" }, { "capacity_mw": 88.2, "changed_on": "2026-08-01", "dates": { "operating": "1955-09-01", "planned_operating": null, "planned_retirement": null, "precision": "month", "retirement": null }, "generator_id": "12", "id": "generator:eia:3921:12", "in_baseline": true, "life": "standby_or_out_of_service", "resource_group": "hydro", "status": { "category": "existing", "code": "OA", "label": "out_of_service_short_term" 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"2023-04-01T00:00:00Z", "period_start": "2023-03-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 642389.0 }, { "hours": 720, "maturity": "final", "period_end": "2023-05-01T00:00:00Z", "period_start": "2023-04-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 548314.0 }, { "hours": 744, "maturity": "final", "period_end": "2023-06-01T00:00:00Z", "period_start": "2023-05-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 1280479.0 }, { "hours": 720, "maturity": "final", "period_end": "2023-07-01T00:00:00Z", "period_start": "2023-06-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 878678.0 }, { "hours": 744, "maturity": "final", "period_end": "2023-08-01T00:00:00Z", "period_start": "2023-07-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 941946.0 }, { "hours": 744, "maturity": "final", "period_end": "2023-09-01T00:00:00Z", "period_start": "2023-08-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 970914.0 }, { "hours": 720, "maturity": "final", "period_end": "2023-10-01T00:00:00Z", "period_start": "2023-09-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 465733.0 }, { "hours": 744, "maturity": "final", "period_end": "2023-11-01T00:00:00Z", "period_start": "2023-10-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 503694.0 }, { "hours": 720, "maturity": "final", "period_end": "2023-12-01T00:00:00Z", "period_start": "2023-11-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 811973.0 }, { "hours": 744, "maturity": "final", "period_end": "2024-01-01T00:00:00Z", "period_start": "2023-12-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 727341.0 }, { "hours": 744, "maturity": "final", "period_end": "2024-02-01T00:00:00Z", "period_start": "2024-01-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 696191.0 }, { "hours": 696, "maturity": "final", "period_end": "2024-03-01T00:00:00Z", "period_start": "2024-02-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 529143.0 }, { "hours": 744, "maturity": "final", "period_end": "2024-04-01T00:00:00Z", "period_start": "2024-03-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 682086.0 }, { "hours": 720, "maturity": "final", "period_end": "2024-05-01T00:00:00Z", "period_start": "2024-04-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 659694.0 }, { "hours": 744, "maturity": "final", "period_end": "2024-06-01T00:00:00Z", "period_start": "2024-05-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 856271.0 }, { "hours": 720, "maturity": "final", "period_end": "2024-07-01T00:00:00Z", "period_start": "2024-06-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 1021866.0 }, { "hours": 744, "maturity": "final", "period_end": "2024-08-01T00:00:00Z", "period_start": "2024-07-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 1067388.0 }, { "hours": 744, "maturity": "final", "period_end": "2024-09-01T00:00:00Z", "period_start": "2024-08-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 915311.0 }, { "hours": 720, "maturity": "final", "period_end": "2024-10-01T00:00:00Z", "period_start": "2024-09-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 537673.0 }, { "hours": 744, "maturity": "final", "period_end": "2024-11-01T00:00:00Z", "period_start": "2024-10-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 536789.0 }, { "hours": 720, "maturity": "final", "period_end": "2024-12-01T00:00:00Z", "period_start": "2024-11-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 817635.0 }, { "hours": 744, "maturity": "final", "period_end": "2025-01-01T00:00:00Z", "period_start": "2024-12-01T00:00:00Z", "quality": "valid", "rows": 1, "value": 907781.0 } ], "years_eligible": [ 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 ], "years_excluded": [] }, "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": "monthly" }, "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": 24, "owned_mw": 2184.8, "owner": { "entity_type": "F", "entity_type_label": "Federally-owned utility", "id": "org:eia:19400", "name": "U.S. Army Corps of Engineers, Northwestern Division" } } ], "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": "M" }, "resource_group": "hydro", "schema_version": "1.41.0", "source_name": "Chief Joseph", "sources": [ "curated-aliases", "ornl-eha-2026", "ornl-hilarri-v4", "pudl-generators", "pudl-output", "pudl-ownership", "pudl-plants", "usace-nid" ], "storage": null, "type": "plant", "updated_reason": null, "water": null }