Compare power plants

Registry, engineering, and operating metrics shown on a consistent EIA basis.

Metric	Lodi Energy Center San Joaquin County	Mariposa Energy Project Alameda County
Capacity	288.9 MW	199.6 MW
Technology	Natural Gas Fired Combined Cycle	Natural Gas Fired Combustion Turbine
Operator	Northern California Power Agny	Diamond Generating Corporation
Operating units	2	4
Latest 12-month generation	413.3 GWh	22.8 GWh
Latest complete-year capacity factor	22.9% (2025)	1.7% (2025)
National technology rank	#368 of 538	#246 of 825
Latest EIA report	2026-06	2026-06

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.

Compare power plants

Registry, engineering, and operating metrics shown on a consistent EIA basis.

Metric	Lodi Energy Center San Joaquin County	Mariposa Energy Project Alameda County
Capacity	288.9 MW	199.6 MW
Technology	Natural Gas Fired Combined Cycle	Natural Gas Fired Combustion Turbine
Operator	Northern California Power Agny	Diamond Generating Corporation
Operating units	2	4
Latest 12-month generation	413.3 GWh	22.8 GWh
Latest complete-year capacity factor	22.9% (2025)	1.7% (2025)
National technology rank	#368 of 538	#246 of 825
Latest EIA report	2026-06	2026-06

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.