Covanta Hempstead
Nassau County, New York · EIA plant ID 10642 · Operator: Covanta Hempstead Company
Nameplate79MWSummer 72 MW
Generators1in service
Net generation462GWh12 mo to Aug 2026
Capacity factor73%other units, summer MW
Heat rate25,452Btu/kWhfossil units, electric fuel, HHV
First online1989
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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), other 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 | 547.1 | 91.0% | — |
| 2002 | 540.9 | 91.1% | 17,062 |
| 2003 | 557.2 | 93.6% | 16,142 |
| 2004 | 562.1 | 90.0% | 17,241 |
| 2005 | 572.1 | 91.7% | 16,498 |
| 2006 | 566.6 | 90.9% | 16,462 |
| 2007 | 575.7 | 92.4% | 16,351 |
| 2008 | 566.7 | 90.6% | 17,045 |
| 2009 | 556.9 | 88.2% | 17,622 |
| 2010 | 564.7 | 89.0% | 17,504 |
| 2011 | 556 | 87.8% | 18,133 |
| 2012 | 547.2 | 86.1% | 18,399 |
| 2013 | 559.4 | 88.5% | 17,711 |
| 2014 | 574.7 | 91.1% | 18,359 |
| 2015 | 573.7 | 91.0% | 18,435 |
| 2016 | 572.8 | 90.6% | 18,159 |
| 2017 | 593.5 | 94.3% | 18,393 |
| 2018 | 594 | 94.3% | 17,679 |
| 2019 | 542.4 | 86.1% | 20,995 |
| 2020 | 593.6 | 94.0% | 17,250 |
| 2021 | 584.5 | 92.9% | 17,305 |
| 2022 | 580.4 | 92.2% | 17,364 |
| 2023 | 499.1 | 79.2% | 23,509 |
| 2024 | 596.4 | 94.5% | 17,275 |
| 2025 | 587.4 | 93.2% | 17,356 |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Municipal Solid Waste | ST | 78.6 | 71.8 | Apr 1989 | Operating | — | coming soon |
Owner / operator
Operator: Covanta Hempstead Company. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Covanta Hempstead Company | 100.0% | 79 MW |
Nearby plants
Within 80 km.
| Nassau Energy Corp | retired | 1.4 km |
| Mercy Medical Center | 4 MW | 6.6 km |
| SUNY Old Westbury College | retired | 6.9 km |
| Altice - Hicksville | 2 MW | 7.6 km |
| Bethpage Power Plant | 240 MW | 7.7 km |
| Bloom-Altice Fuel Cell | 2 MW | 8.5 km |