Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Los Medanos Energy Center Contra Costa County | Marsh Landing Generating Station Contra Costa County |
|---|---|---|
| Capacity | 678.3 MW | 828 MW |
| Technology | Natural Gas Fired Combined Cycle | Natural Gas Fired Combustion Turbine |
| Operator | Los Medanos Energy Center LLC | Marsh Landing LLC |
| Operating units | 3 | 4 |
| Latest 12-month generation | 2.67 TWh | 17.8 GWh |
| Latest complete-year capacity factor | 41.8% (2025) | 0.2% (2025) |
| National technology rank | #193 of 538 | #22 of 825 |
| Latest EIA report | 2026-04 | 2026-04 |
Generation comes from EIA-923. Capacity, unit counts, technology, and reporting relationships come from EIA-860. Incomplete reporting years are excluded from capacity-factor comparisons.