New Haven Steam
Oil power plant in New Haven County, Connecticut. 641.5 MW of nameplate capacity across 4 generators, operated by Generation Bridge II Connecticut, LLC.
Also known as New Haven Harbor Power Plant · EIA plant 6156
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 641.5 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- July 1975First generator online
- Operator
- Generation Bridge II Connecticut, LLCEIA operator ID 65448
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 4 ISONE nodesResource nodes with prices
- Location
- New Haven County, CT41.2840, −72.9043
- EIA plant ID
- 6156EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power New Haven Steam produces
Free · EIA-923Net generation, 2025
0 MWh
0 MWh, final. 2 of 12 months reported
Capacity factor, 2025
0.0%
2024: Not reported
January to July 2026
0 MWh
Provisional. 1 of 7 months reported
Range, 2015 to 2021
−6.4–121.9
GWh a year. Low 2020, high 2015
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 1,798,737 | Not reported | 12 of 12 |
| 2001 | 1,899,022 | Not reported | 12 of 12 |
| 2002 | 233,306 | Not reported | 3 of 12 |
| 2003 | 666,463 | Not reported | 12 of 12 |
| 2004 | 501,745 | Not reported | 11 of 12 |
| 2005 | 1,012,233 | Not reported | 12 of 12 |
| 2006 | 408,611 | Not reported | 12 of 12 |
| 2007 | 538,776 | Not reported | 12 of 12 |
| 2008 | 108,819 | Not reported | 12 of 12 |
| 2009 | 115,575 | Not reported | 12 of 12 |
| 2010 | 122,904 | 3.1% | 12 of 12 |
| 2011 | 68,247 | 1.7% | 12 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | 112,819 | 2.0% | 12 of 12 |
| 2014 | 243,300 | 4.3% | 12 of 12 |
| 2015 | 121,924 | 2.2% | 12 of 12 |
| 2016 | 24,216 | 0.4% | 12 of 12 |
| 2017 | 18,136 | Not reported | 12 of 12 |
| 2018 | 31,999 | 0.6% | 12 of 12 |
| 2019 | −4,276 | -0.1% | 12 of 12 |
| 2020 | −6,428 | -0.1% | 12 of 12 |
| 2021 | 9,506 | 0.2% | 12 of 12 |
| 2022 | 506 | Not reported | 1 of 12 |
| 2023 | Not reported | Not reported | 0 of 12 |
| 2024 | Not reported | Not reported | 0 of 12 |
| 2025 | 0 | 0.0% | 2 of 12 |
| 2026 (provisional, partial year) | 0 | 0.0% | 1 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · ISONEEmissions
Free · EPA CAMPDCO₂, 2025
89,543
US short tons. 2024: 28,289
SO₂, 2025
67
US short tons
NOx, 2025
50
US short tons
4 of 4 EPA units reported CO₂ in 2025 (NHB1, NHHS2, NHHS3, NHHS4), matched to EIA plant 6156 through the EPA–EIA crosswalk.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
9,925
million gallons
Consumption, 2024
0
million gallons
Source
New Haven Harbor
Surface, Brackish. Once-through
Watershed stress
Very low/none · 0.101
USGS SUI, HUC12 Indian River-Frontal Long Island Sound
12 of 12 cooling months report withdrawal. Saline, brackish or ocean intake; not tested. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Petroleum Liquids | 460.0 | July 1975 |
| 2 | Petroleum Liquids | 60.5 | June 2012 |
| 3 | Petroleum Liquids | 60.5 | June 2012 |
| 4 | Petroleum Liquids | 60.5 | June 2012 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Generation Bridge II Connecticut, LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near New Haven Steam
More plants operated by Generation Bridge II Connecticut, LLC
Questions about New Haven Steam
How much power does New Haven Steam produce?
New Haven Steam reported 0 MWh (0 MWh) of net generation in 2025. From January to July 2026 it reported 0 MWh, which is provisional. 2 of 12 months were reported for 2025.
Where is New Haven Steam?
New Haven Steam is in New Haven County, Connecticut, at 41.2840, −72.9043. It is in the ISO New England Inc. balancing area (ISNE).
Who operates New Haven Steam?
EIA-860M for August 2026 lists Generation Bridge II Connecticut, LLC as the operator (EIA operator ID 65448). The operator is not always the owner.
When did New Haven Steam start operating?
Its first generator began operating in July 1975, according to EIA-860M.
Does InfraMap have power prices for New Haven Steam?
Yes. InfraMap has ISONE day-ahead and real-time prices at 4 price nodes linked to New Haven Steam, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- ISONE day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page