Nassau Energy CorpRetired
Nassau County, New York · EIA plant ID 52056 · Operator: Nassau Energy Corp
×55 MW natural gas retired since 2020 (latest Jul 2022)
Nameplate—MWSummer — MW
Generators0in service
Net generation—GWh12 mo
Capacity factor—no 923 generation in the last 12 months
Heat rate—Btu/kWhfossil units, electric fuel, HHV
First online—
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), primary-fuel units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 425.9 | — | — |
| 2002 | 461.3 | — | — |
| 2003 | 442 | 91.7% | 7,350 |
| 2004 | 392.9 | 81.3% | 6,231 |
| 2005 | 439.1 | 91.1% | 6,231 |
| 2006 | 404.3 | 83.9% | 6,231 |
| 2007 | 428.9 | 89.0% | 6,198 |
| 2008 | 400.8 | 83.0% | 6,231 |
| 2009 | 86.8 | 18.0% | 25,683 |
| 2010 | 429.7 | 89.2% | 6,231 |
| 2011 | 343.6 | 71.3% | 6,231 |
| 2012 | 379.7 | 78.6% | 6,231 |
| 2013 | 364.7 | 75.7% | 6,231 |
| 2014 | 343.1 | 71.2% | 6,231 |
| 2015 | 325.6 | 67.6% | 6,231 |
| 2016 | 381 | 78.9% | 4,885 |
| 2017 | 338.7 | 70.3% | 4,885 |
| 2018 | 335.3 | 69.6% | 4,885 |
| 2019 | 351.8 | 73.0% | 4,885 |
| 2020 | 163.8 | 37.3% | 4,885 |
| 2021 | 297.4 | 67.9% | 4,885 |
| 2022 | 128.9 | 59.3% | 4,885 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| GT1 | Natural Gas Fired Combined Cycle | CT | 43 | 38 | Mar 1991 | Retired Jul 2022 | — | coming soon |
| ST1 | Natural Gas Fired Combined Cycle | CA | 12 | 12 | Mar 1991 | Retired Jul 2022 | — | coming soon |
Owner / operator
Operator: Nassau Energy Corp. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Nearby plants
Within 80 km.
| Covanta Hempstead | 79 MW | 1.4 km |
| Mercy Medical Center | 4 MW | 5.5 km |
| Plant No 1 Freeport | 6 MW | 7.8 km |
| Bethpage Power Plant | 240 MW | 7.9 km |
| Altice - Hicksville | 2 MW | 8.1 km |
| SUNY Old Westbury College | retired | 8.2 km |