Registry, engineering, and operating metrics shown on a consistent EIA basis.
| Metric | Port Jefferson Suffolk County | Astoria Energy Queens County |
|---|---|---|
| Capacity | 498 MW | 595 MW |
| Technology | Natural Gas Fired Combustion Turbine, Petroleum Liquids, Natural Gas Steam Turbine | Natural Gas Fired Combined Cycle |
| Operator | National Grid Generation LLC | Astoria Energy LLC |
| Operating units | 5 | 3 |
| Latest 12-month generation | 403.8 GWh | 3.99 TWh |
| Latest complete-year capacity factor | 7.7% (2025) | 74.8% (2025) |
| National technology rank | #70 of 257 | #253 of 538 |
| Latest EIA report | 2026-04 | 2026-04 |
Generation comes from EIA-923. Capacity, unit counts, technology, and reporting relationships come from EIA-860. Incomplete reporting years are excluded from capacity-factor comparisons.