Power plant · California, United States
Segs IX Power Plant
Segs IX Power Plant is a closed gas power plant in California, United States, with 92 MW of capacity, operated by Terra-Gen Operating Co-Solar.
Grid connection
It closed in 2024, which freed up a 92 MW grid connection at 220 kV to the grid of Southern California Edison Co, unless it has been reassigned since.
Facts
Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Name in the source | SEGS IX | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Location | California | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Status | Closed | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Start year | 1990 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| End year | 2024 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Operator | Terra-Gen Operating Co-Solar | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Capacity | 92 MW (nameplate of its retired generators) | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Technology | Natural Gas Steam Turbine | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Grid operator | Southern California Edison Co | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Voltage | 220 kV | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Coordinates | 35.0330, -117.3380 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
Research on this power plant and its operator.Who owns it up to the parent company, its grid connection and planning status, and an introduction to the operator.
Request researchHow it compares
Segs IX is the 55th-largest of 63 power plants in California and the 956th-largest of 1,009 in the United States by capacity; its 92 MW is <0.1% of the 917,512 MW we hold for the United States. Ranks and totals cover the power plants in our data that report their capacity, not every one in existence. Power plants planned, permitted or under construction are ranked apart.
| Within | Rank | Total | Share |
|---|---|---|---|
| California | 55th of 63 | 40,999 MW | 0.22% |
| United States | 956th of 1,009 | 917,512 MW | <0.1% |
| All power plants in our data | 2,700th of 15,799 | 1,918,113 MW | <0.1% |
Timeline
Dated facts about this power plant from its sources, oldest first.
- Started operating
- Retired
Nearby
Within 50 km of this power plant: 2 mines (1 operating), measured from the coordinates in the facts above.
| Name | Kind | Size | Status | Distance |
|---|---|---|---|---|
| Boron Operations | Mine | — | Operating | 33 km |
| Persistence Mine | Mine | — | Closed | 39 km |
Operator, grid operator and place
More from Terra-Gen Operating Co-Solar
- Desert Breeze Solar, LLC125 MW · under construction
Other power plants in California
- Diablo Canyon2,323 MW
- Dynegy Moss Landing Power Plant Hybrid1,848 MW
- Haynes1,739 MW
- Castaic1,682 MW
- Ormond Beach1,612 MW
- Geysers Unit 5-201,236 MW
- La Paloma Generating Plant1,156 MW
- AES Alamitos LLC1,115 MW
Data on this page
- Contains public sector information licensed under the Open Government Licence v3.0. DUKES 5.11: Power stations in the United Kingdom, Open Government Licence v3.0.
- Contains public sector information licensed under the Open Government Licence v3.0. DESNZ Renewable Energy Planning Database (REPD), Open Government Licence v3.0.
- Source: U.S. Energy Information Administration (Sep 2026). EIA-860 / 860M / 923, Public domain.
- JRC Open Power Plants Database (JRC-PPDB-OPEN), European Commission, Joint Research Centre. JRC Open Power Plants Database (JRC-PPDB-OPEN), CC BY 4.0.
- Bundesnetzagentur, Marktstammdatenregister. Marktstammdatenregister, DL-DE-BY-2.0.
- MSHA Mines Data Set. MSHA Mines Data Set, Public domain.
- Dutch power station owners' and operators' pages. Dutch power station owners' and operators' pages, Facts only, each linked to its page.
- Contains public sector information licensed under the Open Government Licence v3.0. Planning Inspectorate: National Infrastructure Projects, Open Government Licence v3.0.
- RVO SDE(+)(+) projecten in beheer and SDE viewer. RVO SDE(+)(+) projecten in beheer and SDE viewer, Free reuse, no attribution required.
- Wikidata. Wikidata, CC0 1.0.