Compare power plants

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

Metric	Stateline Solar San Bernardino County	Solar Star 1 Kern County
Capacity	299.5 MW	318 MW
Technology	Solar Photovoltaic	Solar Photovoltaic
Operator	Southern Power Co	Solar Star California XIX, LLC
Operating units	7	7
Latest 12-month generation	619.9 GWh	888.9 GWh
Latest complete-year capacity factor	23.6% (2024)	32.2% (2025)
National technology rank	#57 of 7,234	#31 of 7,234
Latest EIA report	2024-12	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	Stateline Solar San Bernardino County	Solar Star 1 Kern County
Capacity	299.5 MW	318 MW
Technology	Solar Photovoltaic	Solar Photovoltaic
Operator	Southern Power Co	Solar Star California XIX, LLC
Operating units	7	7
Latest 12-month generation	619.9 GWh	888.9 GWh
Latest complete-year capacity factor	23.6% (2024)	32.2% (2025)
National technology rank	#57 of 7,234	#31 of 7,234
Latest EIA report	2024-12	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.