ISO New England (ISO-NE)
ISO New England runs the high-voltage grid and wholesale electricity market for the six New England states. On the map, ISO-NE has 1,482 power plants with 36.5 GW of capacity, natural gas the largest share at 14.2 GW. Its interconnection queue holds 57 active requests for 7.9 GW.
Capacity by fuel
1,482 power plants with 36.5 GW of capacity, planned generators left out.
- Natural gas: 14.2 GW from 103 plants (39%)
- Oil: 6.3 GW from 55 plants (17%)
- Solar: 4 GW from 997 plants (11%)
- Nuclear: 3.4 GW from 2 plants (9%)
- Wind: 2.5 GW from 75 plants (7%)
- Hydro: 2 GW from 168 plants (5%)
- Pumped storage: 1.9 GW from 3 plants (5%)
- Biomass: 1.2 GW from 47 plants (3%)
- Battery storage: 710 MW from 31 plants (2%)
- Coal: 472 MW from 1 plant (1%)
Largest plants
- Millstone: Nuclear, 2.1 GW, Connecticut
- Canal: Oil, 1.4 GW, Massachusetts
- Seabrook: Nuclear, 1.2 GW, New Hampshire
- Northfield Mountain: Pumped storage, 1.2 GW, Massachusetts
- Lake Road Generating Plant: Natural gas, 829 MW, Connecticut
- William F Wyman Hybrid: Oil, 827 MW, Maine
- Vineyard Wind 1: Wind, 800 MW, Massachusetts
- Middletown: Oil, 770 MW, Connecticut
- CPV Towantic Energy Center: Natural gas, 744 MW, Connecticut
- Fore River Generating Station: Natural gas, 724 MW, Massachusetts
Planned and under construction
53 generators planned, under construction or testing, 2.8 GW in all, not counted above.
- Solar: 1.1 GW
- Battery storage: 1 GW
- Wind: 715 MW
Interconnection queue
57 active requests to connect 7.9 GW of new generation and storage, from Lawrence Berkeley National Laboratory's Queued Up data.
- Battery storage: 6.5 GW in 28 requests
- Solar: 1.3 GW in 23 requests
- Natural gas: 75 MW in 2 requests
- Other: 66 MW in 1 request
- Wind: 23 MW in 2 requests
- Hydro: 7 MW in 1 request
States and provinces
- Massachusetts: 689 plants
- Maine: 265 plants
- Connecticut: 185 plants
- Vermont: 114 plants
- Rhode Island: 112 plants
- New Hampshire: 59 plants
- New York: 58 plants
Sources
Power plants: EIA-860M (US); NRCan NACEI (Canada, Mexico); WRI GPPD (Mexico); OpenStreetMap via Geofabrik (Canada, Mexico gap fill); USGS USWTDB/USPVDB; EPA eGRID; Natural Earth admin-1; HIFLD control areas; location attributes from WorldPop (R2025A), Global Solar Atlas PVOUT, Global Wind Atlas 4, USFS Wildfire Hazard Potential, the USGS National Seismic Hazard Model and the previous publish's lines and substations; water distances from OpenStreetMap via Geofabrik; gas distances and county queue from the previous publish's EIA gas pipelines and LBNL Queued Up requests; nearest city from Natural Earth populated places; cooling degree days from NOAA NCEI nClimDiv county normals; elevation and slope from the Copernicus DEM GLO-30 (ESA, via AWS Open Data); water stress from WRI Aqueduct 4.0; ozone nonattainment from the EPA Green Book; drought from the U.S. Drought Monitor; tribal land from US Census TIGER/Line. License: ODbL (derivative database; EIA content is public domain, NRCan OGL-Canada, WRI GPPD CC BY 4.0; location attributes from WorldPop, Global Solar Atlas, Global Wind Atlas, LBNL Queued Up and WRI Aqueduct CC BY 4.0, USFS, USGS, EIA, NOAA, EPA, US Census and Natural Earth public domain, Copernicus DEM GLO-30 © DLR e.V. and Airbus Defence and Space GmbH, the U.S. Drought Monitor courtesy of NDMC)
Interconnection queue requests: Lawrence Berkeley National Laboratory and GridTracker, "Queued Up". License: CC BY 4.0
ISO and RTO regions: HIFLD Control Areas grouped by EIA-930 reference tables membership; Natural Earth admin-1 provinces for IESO/AESO/HQ; carbon intensity from EPA eGRID (US) and ECCC National Inventory Report (Canada). License: Public domain (EPA eGRID, HIFLD); ECCC figures under the Open Government Licence – Canada