Compare power plants

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

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