William Floyd School District
Suffolk County, New York · EIA plant ID 58167 · Operator: William Floyd School District
Nameplate4MWSummer 4 MW
Generators3in service
Net generation3GWh12 mo to Dec 2025
Capacity factor9%gas/coal/oil units, summer MW
Heat rate4,490Btu/kWhfossil units, electric fuel, HHV
First online2004Runs as peaking
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), gas/coal/oil 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) |
|---|---|---|---|
| 2012 | 3.1 | 9.0% | 11,331 |
| 2014 | 1.6 | 4.7% | 13,014 |
| 2015 | 1.6 | 4.7% | 13,010 |
| 2016 | 2.4 | 7.0% | 4,490 |
| 2017 | 2.4 | 7.0% | 4,489 |
| 2018 | 2.4 | 7.1% | 4,490 |
| 2019 | 2.5 | 7.4% | 4,490 |
| 2020 | 3 | 8.8% | 4,835 |
| 2021 | 2.7 | 7.8% | 4,882 |
| 2022 | 3.9 | 11.4% | 4,626 |
| 2023 | 3.2 | 9.3% | 4,580 |
| 2024 | 0 | 0.0% | — |
| 2025 | 3.2 | 9.4% | 4,490 |
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 | Natural Gas Internal Combustion Engine | IC | 1.3 | 1.3 | Feb 2004 | Operating | — | coming soon |
| GEN2 | Natural Gas Internal Combustion Engine | IC | 1.3 | 1.3 | Feb 2004 | Operating | — | coming soon |
| GEN3 | Petroleum Liquids | IC | 1.3 | 1.3 | Feb 2004 | Operating (Standby / backup) | — | coming soon |
Owner / operator
Operator: William Floyd School District. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| William Floyd School District | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Calabro Airport South Solar Project | 1 MW | 3.9 km |
| Calabro Airport North Solar Project | 1 MW | 5.4 km |
| Brookhaven Landfill Solar Farm 1 | 5 MW | 6.7 km |
| SWM Fuel Cell | 8 MW | 6.8 km |
| Caithness Long Island Energy Center | 349 MW | 8.6 km |
| Manorville II | — | 8.6 km |