Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Callisto I Energy Center | Sealy BESS |
|---|---|---|
| Capacity | 223.4 MW | 200 MW |
| Technology | Batteries | Batteries |
| Operator | Callisto I Energy Center | Sealy Power, LLC |
| Operating units | 1 | 1 |
| Latest 12-month generation | 117.7 GWh | 127.8 GWh |
| Latest complete-year capacity factor | — | — |
| National technology rank | #40 of 962 | #48 of 962 |
| Latest EIA report | 2026-06 | 2026-06 |