SEGS IXRetired
San Bernardino County, California · EIA plant ID 10446 · Operator: Terra-Gen Operating Co-Solar
×92 MW natural gas retired since 2020 (latest Oct 2024)
Nameplate—MWSummer — MW
Generators0in service
Net generation—GWh12 mo
Capacity factor—no 923 generation in the last 12 months
Heat rate—Btu/kWhfossil units, electric fuel, HHV
First online—
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), primary-fuel units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 171.8 | — | 12,120 |
| 2002 | 189 | — | 13,469 |
| 2003 | 162.5 | — | 13,172 |
| 2004 | 161.8 | — | 13,460 |
| 2005 | 138.6 | — | 13,679 |
| 2006 | 140.8 | — | 13,966 |
| 2007 | 147.1 | — | 13,583 |
| 2008 | 166.2 | — | 13,961 |
| 2009 | 197.1 | — | 13,903 |
| 2010 | 232.5 | — | 13,401 |
| 2011 | 222.2 | — | 13,325 |
| 2012 | 224.5 | — | 13,532 |
| 2013 | 168.9 | — | 13,496 |
| 2014 | 159.8 | — | 13,408 |
| 2015 | 163.3 | — | 13,940 |
| 2016 | 158 | — | 13,285 |
| 2017 | 151.7 | — | 13,371 |
| 2018 | 152 | — | 13,267 |
| 2019 | 140.3 | — | 13,322 |
| 2020 | 145.5 | — | 13,477 |
| 2021 | 116.3 | — | 17,483 |
| 2022 | 121.2 | — | — |
| 2023 | 109.2 | — | — |
| 2024 | 95.9 | 0.0% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Natural Gas Steam Turbine | ST | 92 | 88 | Sep 1990 | Retired Oct 2024 | — | coming soon |
Owner / operator
Operator: Terra-Gen Operating Co-Solar. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Nearby plants
Within 80 km.
| Lockhart Solar PV IV, LLC | 80 MW | 0.1 km |
| Desert Breeze Solar, LLC | 125 MW | 1 km |
| Lockhart Solar PV II | 144 MW | 1.5 km |
| SEGS VIII | 169 MW | 1.7 km |
| Mojave Solar Project | 280 MW | 1.7 km |
| Lockhart ESS, LLC | 45 MW | 1.7 km |