Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Astoria Energy | Zeltmann |
|---|---|---|
| Capacity | 595 MW | 528 MW |
| Technology | Natural Gas Fired Combined Cycle | Natural Gas Fired Combined Cycle |
| Operator | Astoria Energy LLC | New York Power Authority |
| Operating units | 3 | 3 |
| Latest 12-month generation | 3.97 TWh | 2.83 TWh |
| Latest complete-year capacity factor | 74.8% (2025) | 79.4% (2024) |
| National technology rank | #253 of 538 | #301 of 538 |
| Latest EIA report | 2026-06 | 2026-06 |