Nantucket Hybrid
Nantucket County, Massachusetts · EIA plant ID 1615 · Operator: Nantucket Electric Co
Nameplate22MWSummer 21 MW
Generators3in service
Net generation-0GWh12 mo to Dec 2025
Capacity factor-0%!gas/coal/oil units, summer MW
Heat rate—Btu/kWhfossil units, electric fuel, HHV
First online2019Runs 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 | 0.2 | — | — |
| 2002 | 0.1 | — | — |
| 2003 | 0.2 | 0.1% | 15,117 |
| 2004 | 0.3 | 0.1% | 15,059 |
| 2005 | 0.8 | 0.5% | 15,191 |
| 2006 | 0.2 | 0.1% | 14,190 |
| 2007 | 0.1 | 0.1% | 20,143 |
| 2008 | 0.1 | 0.2% | 15,286 |
| 2009 | 0.2 | 0.3% | 15,815 |
| 2010 | 0.2 | 0.4% | 15,581 |
| 2011 | 0.2 | 0.4% | 15,807 |
| 2012 | 0.2 | 0.4% | 15,236 |
| 2013 | 0.2 | 0.4% | 15,417 |
| 2014 | 0.2 | 0.4% | 15,268 |
| 2015 | 0.2 | 0.3% | 16,293 |
| 2016 | 0.3 | 0.6% | 15,742 |
| 2017 | 0.2 | 0.4% | 15,424 |
| 2018 | 0.1 | 0.3% | 16,089 |
| 2019 | 0.6 | 0.7% | 20,965 |
| 2020 | 0.1 | 0.2% | 16,724 |
| 2021 | -0.1 | 0.0% | — |
| 2022 | -0.7 | -0.2% | — |
| 2023 | -0.4 | -0.0% | — |
| 2024 | -0 | 0.1% | 26,000 |
| 2025 | -0.4 | -0.0% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 18 | Petroleum Liquids | GT | 15.4 | 13.5 | Aug 2019 | Operating | — | coming soon |
| 19 | Petroleum Liquids | IC | 1 | 1 | Aug 2019 | Operating | — | coming soon |
| 20 | Batteries | BA | 6 | 6 | Jul 2019 | Operating | — | coming soon |
| 10 | Petroleum Liquids | IC | 1.2 | 1 | Jul 1987 | Retired Jun 2006 | — | coming soon |
| 11 | Petroleum Liquids | IC | 1.2 | 1 | Jul 1987 | Retired Jun 2006 | — | coming soon |
| 12 | Petroleum Liquids | GT | 3.7 | 2.8 | Oct 1988 | Retired Aug 2019 | — | coming soon |
| 13 | Petroleum Liquids | GT | 3.7 | 2.9 | Oct 1988 | Retired Aug 2019 | — | coming soon |
| 14 | Petroleum Liquids | IC | 2.5 | 2.5 | Apr 1995 | Retired Aug 2007 | — | coming soon |
| 15 | Petroleum Liquids | IC | 2.5 | 2.5 | Apr 1995 | Retired Aug 2007 | — | coming soon |
| 16 | Petroleum Liquids | IC | 2.5 | 2.5 | Feb 1998 | Retired Aug 2007 | — | coming soon |
| 17 | Petroleum Liquids | IC | 2.5 | 2.5 | Feb 1998 | Retired Aug 2007 | — | coming soon |
Owner / operator
Operator: Nantucket Electric Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| New England Power Company | 100.0% | 22 MW |
Nearby plants
Within 80 km.
| Nunnepog | 1 MW | 39.5 km |
| Katama Farm | 1 MW | 40.5 km |
| Vineyard Wind 1 | 800 MW | 43.4 km |
| Chatham Landfill | 2 MW | 47.7 km |
| 0 Middle | 4 MW | 48.2 km |
| Harwich Landfill | 4 MW | 48.8 km |