Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Astoria Energy II | E F Barrett |
|---|---|---|
| Capacity | 650 MW | 669.2 MW |
| Technology | Natural Gas Fired Combined Cycle | Natural Gas Steam Turbine, Natural Gas Fired Combustion Turbine |
| Operator | Astoria Energy II LLC | National Grid Generation LLC |
| Operating units | 3 | 14 |
| Latest 12-month generation | 2.89 TWh | 1.09 TWh |
| Latest complete-year capacity factor | 38.9% (2025) | 20.0% (2025) |
| National technology rank | #210 of 538 | #70 of 257 |
| Latest EIA report | 2026-06 | 2026-06 |