Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | R E Ginna Nuclear Power Plant | Astoria Energy |
|---|---|---|
| Capacity | 614 MW | 595 MW |
| Technology | Nuclear | Natural Gas Fired Combined Cycle |
| Operator | Constellation Nuclear | Astoria Energy LLC |
| Operating units | 1 | 3 |
| Latest 12-month generation | 4.71 TWh | 3.97 TWh |
| Latest complete-year capacity factor | 93.6% (2025) | 74.8% (2025) |
| National technology rank | #54 of 54 | #253 of 538 |
| Latest EIA report | 2026-06 | 2026-06 |