Compare power plants

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

Metric	Edwards Sanborn E4 Kern County	Chaparral Springs Kern County
Capacity	248.9 MW	262 MW
Technology	Batteries, Solar Photovoltaic	Batteries, Solar Photovoltaic
Operator	Terra-Gen Operating Co-Hybrid	Leeward Asset Management, LLC
Operating units	2	4
Latest 12-month generation	334.6 GWh	406.7 GWh
Latest complete-year capacity factor	14.7% (2025)	18.0% (2025)
National technology rank	#324 of 7,234	#233 of 7,234
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	Edwards Sanborn E4 Kern County	Chaparral Springs Kern County
Capacity	248.9 MW	262 MW
Technology	Batteries, Solar Photovoltaic	Batteries, Solar Photovoltaic
Operator	Terra-Gen Operating Co-Hybrid	Leeward Asset Management, LLC
Operating units	2	4
Latest 12-month generation	334.6 GWh	406.7 GWh
Latest complete-year capacity factor	14.7% (2025)	18.0% (2025)
National technology rank	#324 of 7,234	#233 of 7,234
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.