Compare power plants

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

Metric	RE Tranquillity Fresno County	Aquamarine Kings County
Capacity	277.3 MW	250 MW
Technology	Batteries, Solar Photovoltaic	Solar Photovoltaic
Operator	Southern Power Co	Aqua
Operating units	3	1
Latest 12-month generation	491.4 GWh	648.1 GWh
Latest complete-year capacity factor	20.2% (2024)	30.2% (2025)
National technology rank	#133 of 7,234	#76 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.