Henrietta Peaker
Henrietta Peaker is a 98 MW natural gas power plant in Kings County, California, operated by MRP San Joaquin Energy LLC.. EIA-860M lists 2 generating units here, inside CAISO. Its units entered service in 2002.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 98 MW
- 92.4 MW net summer
- Generating units
- 2
- In service
- 2002
- EIA plant ID
- 55807
Where it is
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- County
- Kings County, California
- Coordinates
- 36.2397, -119.9044
- Balancing authority
- CISO
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- MRP San Joaquin Energy LLC.
- Primary energy source
- Natural gas
- Technologies
- Natural Gas Fired Combustion Turbine
- Status
- Operating
Henrietta Peaker: FAQ
- Where is Henrietta Peaker?
- In Kings County, California (CA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Henrietta Peaker?
- 98 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
- Who owns Henrietta Peaker?
- EIA-860M names MRP San Joaquin Energy LLC. as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Henrietta Peaker LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — MRP San Joaquin Energy LLC. here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Henrietta Peaker LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Henrietta Peaker still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.