South Hampton
Suffolk County, New York · EIA plant ID 2519 · Operator: National Grid Generation LLC
Nameplate12MWSummer 9 MW
Generators1in service
Net generation0GWh12 mo to Dec 2025
Capacity factor0%gas/coal/oil units, summer MW
Heat rate—Btu/kWhfossil units, electric fuel, HHV
First online1963Runs as rarely runs
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) |
|---|---|---|---|
| 2001 | 2.9 | 3.4% | 20,435 |
| 2002 | 2 | 2.7% | 20,538 |
| 2003 | 1.9 | 2.3% | 20,770 |
| 2004 | -0 | -0.0% | — |
| 2005 | 0.4 | 0.5% | 29,815 |
| 2006 | 0.4 | 0.6% | 28,647 |
| 2007 | 2.6 | 3.1% | 21,328 |
| 2008 | 6.4 | 7.8% | 20,646 |
| 2009 | 2 | 2.5% | 22,406 |
| 2010 | 2.7 | 3.4% | 22,169 |
| 2011 | 1.8 | 2.3% | 26,088 |
| 2012 | 0.5 | 0.6% | — |
| 2013 | 1.7 | 2.4% | 28,207 |
| 2014 | 0 | 0.0% | — |
| 2015 | 0.7 | 0.9% | — |
| 2016 | 1.6 | 2.2% | 26,428 |
| 2017 | 1 | 1.3% | 27,731 |
| 2018 | 1.5 | 2.0% | 25,321 |
| 2019 | 2.1 | 2.8% | 24,851 |
| 2020 | 1.2 | 1.7% | 24,828 |
| 2021 | 0.5 | 0.7% | 29,590 |
| 2022 | 0.2 | 0.3% | — |
| 2023 | -0 | 0.0% | — |
| 2024 | 0 | 0.1% | — |
| 2025 | 0.2 | 0.2% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Petroleum Liquids | GT | 11.5 | 8.5 | Mar 1963 | Operating | — | coming soon |
Owner / operator
Operator: National Grid Generation LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| National Grid Generation LLC | 100.0% | 12 MW |
Nearby plants
Within 80 km.
| Kearsarge Southampton | 5 MW | 3.6 km |
| East Hampton | 27 MW | 16 km |
| East Hampton Energy Storage Center | 5 MW | 16 km |
| Sterlington Greenworks LLC | 1 MW | 19.3 km |
| Greenport | 10 MW | 22.9 km |
| Southold | 14 MW | 22.9 km |