MacArthur Waste to Energy Facility
Suffolk County, New York · EIA plant ID 51038 · Operator: Covanta MacArthur Renewable Energy
Nameplate13MWSummer 11 MW
Generators1in service
Net generation51GWh12 mo to Aug 2026
Capacity factor53%other units, summer MW
Heat rate—Btu/kWhfossil units, electric fuel, HHV
First online1990
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 | 51.8 | 50.8% | — |
| 2002 | 45.9 | 45.1% | — |
| 2003 | 37.9 | 94.1% | — |
| 2004 | 49 | 50.7% | — |
| 2005 | 53.5 | 55.5% | — |
| 2006 | 54.8 | 56.9% | — |
| 2007 | 57 | 59.2% | — |
| 2008 | 54.5 | 56.4% | — |
| 2009 | 51.6 | 53.5% | — |
| 2010 | 54.3 | 56.4% | — |
| 2011 | 53.8 | 55.8% | — |
| 2012 | 55.8 | 57.7% | — |
| 2013 | 55.4 | 57.0% | 28,694 |
| 2014 | 51.2 | 52.6% | — |
| 2015 | 54.6 | 56.0% | — |
| 2016 | 57.4 | 59.0% | — |
| 2017 | 55.8 | 56.6% | — |
| 2018 | 55.7 | 56.6% | 29,419 |
| 2019 | 50.4 | 51.3% | — |
| 2020 | 55.1 | 55.9% | — |
| 2021 | 42.6 | 43.4% | — |
| 2022 | 51.8 | 53.0% | — |
| 2023 | 54.2 | 55.3% | — |
| 2024 | 53.5 | 54.9% | — |
| 2025 | 54.6 | 56.3% | — |
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 | 12.5 | 11 | Mar 1990 | Operating | — | coming soon |
Owner / operator
Operator: Covanta MacArthur Renewable Energy. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Islip Resource Recovery Agency | 100.0% | 13 MW |
Nearby plants
Within 80 km.
| Lincoln Ave Solar Project | 2 MW | 2 km |
| Four Seasons LI CSG | 2 MW | 3.2 km |
| Holtsville | 567 MW | 4.8 km |
| Richard M Flynn | 170 MW | 4.8 km |
| Holtsville Solar Project | 1 MW | 6.2 km |
| Holtsville Coast Solar Project | 1 MW | 6.2 km |