Compare power plants

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

Metric	Sealy BESS Austin County	Callisto I Energy Center Harris County
Capacity	200 MW	223.4 MW
Technology	Batteries	Batteries
Operator	Sealy Power, LLC	Callisto I Energy Center
Operating units	1	1
Latest 12-month generation	127.8 GWh	117.7 GWh
Latest complete-year capacity factor	—	—
National technology rank	#48 of 962	#40 of 962
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.