Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Millennium Power | Ocean State Power II |
|---|---|---|
| Capacity | 427.5 MW | 306.6 MW |
| Technology | Natural Gas Fired Combined Cycle | Natural Gas Fired Combined Cycle |
| Operator | Millennium Power Company, LLC | Ocean State Power II |
| Operating units | 2 | 3 |
| Latest 12-month generation | 1.01 TWh | 896.8 GWh |
| Latest complete-year capacity factor | 22.8% (2025) | 33.3% (2024) |
| National technology rank | #322 of 538 | #358 of 538 |
| Latest EIA report | 2026-04 | 2024-12 |