Lower Monumental Lock and Dam

Entity plant:eia:3927 · release 20260929T050546Z-51ae0f7d3c78 · schema 1.41.0. Immutable citation page; values as published in this release. Current pages may be newer.

Fact	Value	Unit	Period	Evidence / method	Quality	Source and locator
Nameplate capacity, operating generators	675.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927
Generators listed	6	count	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927
Operating generators	5	count	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927
Nameplate capacity, existing but not operating (standby / out of service)	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927
Net generation	1,281,014	MWh	2024	reported / derived	valid	pudl-output out_eia923__yearly_generation_fuel_combined.parquet; report_date=2024-01-01; plant_id_eia=3927
Capacity factor	0.216	fraction	2024	reported / derived	valid	pudl-output derived: net_generation_mwh@2024 / (nameplate_mw_op x 8784 h)
Nameplate capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=1
Net summer capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=1
Net winter capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=1
Nameplate capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=2
Net summer capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=2
Net winter capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=2
Nameplate capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=3
Net summer capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=3
Net winter capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=3
Nameplate capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=4
Net summer capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=4
Net winter capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=4
Nameplate capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=5
Net summer capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=5
Net winter capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=5
Nameplate capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=6
Net summer capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=6
Net winter capacity	135.0	MW	2024	reported / derived	valid	pudl-generators out_eia__yearly_generators.parquet; report_date=2024-01-01; plant_id_eia=3927; generator_id=6
Operating nameplate capacity, latest inventory	675.0	MW	2026-08-01	reported / derived	valid	eia860m-inventory Preliminary Monthly Electric Generator Inventory, August 2026; plant_id_eia=3927; report_date=2026-08-01
Planned nameplate capacity, latest inventory	—	MW	2026-08-01	reported / derived	not_applicable (not_applicable)	eia860m-inventory Preliminary Monthly Electric Generator Inventory, August 2026; plant_id_eia=3927; report_date=2026-08-01
Retired or cancelled nameplate capacity, latest inventory	—	MW	2026-08-01	reported / derived	not_applicable (not_applicable)	eia860m-inventory Preliminary Monthly Electric Generator Inventory, August 2026; plant_id_eia=3927; report_date=2026-08-01
Net generation	1,640,095	MWh	2015	reported / derived	valid	pudl-output out_eia923__yearly_generation_fuel_combined.parquet; report_date=2015-01-01; plant_id_eia=3927
Net generation	1,987,131	MWh	2016	reported / derived	valid	pudl-output out_eia923__yearly_generation_fuel_combined.parquet; report_date=2016-01-01; plant_id_eia=3927
Net generation	2,767,576	MWh	2017	reported / derived	valid	pudl-output out_eia923__yearly_generation_fuel_combined.parquet; report_date=2017-01-01; plant_id_eia=3927
Net generation	2,383,418	MWh	2018	reported / derived	valid	pudl-output out_eia923__yearly_generation_fuel_combined.parquet; report_date=2018-01-01; plant_id_eia=3927
Net generation	2,240,943	MWh	2019	reported / derived	valid	pudl-output out_eia923__yearly_generation_fuel_combined.parquet; report_date=2019-01-01; plant_id_eia=3927
Net generation	1,637,311	MWh	2020	reported / derived	valid	pudl-output out_eia923__yearly_generation_fuel_combined.parquet; report_date=2020-01-01; plant_id_eia=3927
Net generation	1,338,468	MWh	2021	reported / derived	valid	pudl-output out_eia923__yearly_generation_fuel_combined.parquet; report_date=2021-01-01; plant_id_eia=3927
Net generation	1,682,647	MWh	2022	reported / derived	valid	pudl-output out_eia923__yearly_generation_fuel_combined.parquet; report_date=2022-01-01; plant_id_eia=3927
Net generation	1,553,008	MWh	2023	reported / derived	valid	pudl-output out_eia923__yearly_generation_fuel_combined.parquet; report_date=2023-01-01; plant_id_eia=3927

Sources

Display names verified against each organization's own website; EIA legal names retained as aliases. Licence: CC0 (curation); source names remain EIA's. curated-aliases
U.S. EIA, preliminary monthly generator inventory, August 2026 (released September 24, 2026). Licence: U.S. government work. eia860m-inventory
Megan M. Johnson, Shih-Chieh Kao and Rocio Uría-Martínez. 2026. Existing Hydropower Assets (EHA) Plant Database, 2026. HydroSource. Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA. DOI: 10.21951/EHA_FY2026/3374497. Licence: HydroSource Data Use Policy: "Data hosted on HydroSource is openly shared, without restriction, in accordance with Department of Energy's Public Access Plan"; users "must include bibliographic citations" (authors, title, publisher, DOI). ornl-eha-2026
Hansen, C. H., Matson, P. G., Bozeman, B. B., Turner, S. W. D. 2026. Hydropower Infrastructure – LAkes, Reservoirs, and RIvers (HILARRI) v4. HydroSource. Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA. DOI: 10.21951/HILARRI/3362570. Licence: HydroSource Data Use Policy: "Data hosted on HydroSource is openly shared, without restriction, in accordance with Department of Energy's Public Access Plan"; users "must include bibliographic citations" (authors, title, publisher, DOI). ornl-hilarri-v4
Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923. Licence: CC-BY-4.0. pudl-generators
Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923. Licence: CC-BY-4.0. pudl-output
Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923. Licence: CC-BY-4.0. pudl-ownership
Catalyst Cooperative, PUDL v2026.9.0, derived from U.S. EIA Forms 860/923. Licence: CC-BY-4.0. pudl-plants
U.S. Army Corps of Engineers, Northwestern Division, CWMS Data API (revised CBT series, as served at retrieval). Licence: U.S. government work; public API, no terms stated. usace-cwms-history
U.S. Army Corps of Engineers, Northwestern Division, Dataquery 2.0 (revised CBT series, as served at retrieval). Licence: U.S. government work; public web service, no terms stated. usace-dataquery-history
U.S. Army Corps of Engineers, National Inventory of Dams (export of 2026-09-11). Licence: U.S. government work; public NID export, no terms stated on the export. usace-nid

Each source's notice and terms: rights.json in this release.