New Haven Harbor
New Haven County, Connecticut · EIA plant ID 6156 · Operator: Generation Bridge II Connecticut, LLC
Nameplate642MWSummer 562 MW
Generators4in service
Net generation150GWh12 mo to Aug 2026
Capacity factor4%gas/coal/oil units, summer MW
Heat rate12,134Btu/kWhfossil units, electric fuel, HHV
First online1975Runs as rarely runs
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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 | 1,899 | — | — |
| 2002 | 1,348.8 | — | — |
| 2003 | 666.5 | 17.0% | 9,647 |
| 2004 | 501.7 | 12.8% | 9,342 |
| 2005 | 1,012.2 | 25.8% | 9,971 |
| 2006 | 408.6 | 10.4% | 10,965 |
| 2007 | 538.8 | 13.7% | 10,504 |
| 2008 | 108.8 | 2.8% | 13,472 |
| 2009 | 115.6 | 2.9% | 13,395 |
| 2010 | 122.9 | 3.1% | 14,540 |
| 2011 | 68.2 | 1.7% | 18,017 |
| 2012 | 111.4 | 2.4% | 16,322 |
| 2013 | 112.8 | 2.2% | 13,793 |
| 2014 | 243.3 | 4.9% | 11,780 |
| 2015 | 121.9 | 2.4% | 13,815 |
| 2016 | 24.2 | 0.5% | 26,893 |
| 2017 | 18.1 | 0.4% | — |
| 2018 | 32 | 0.6% | 21,591 |
| 2019 | -4.3 | -0.1% | — |
| 2020 | -6.4 | -0.1% | — |
| 2021 | 9.5 | 0.2% | — |
| 2022 | 70.7 | 1.4% | 10,080 |
| 2023 | 21.1 | 0.4% | 15,961 |
| 2024 | 32.5 | 0.7% | 13,729 |
| 2025 | 105.9 | 2.1% | 11,967 |
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 | ST | 460 | 432.6 | Jul 1975 | Operating | — | coming soon |
| 2 | Petroleum Liquids | GT | 60.5 | 43.2 | Jun 2012 | Operating | — | coming soon |
| 3 | Petroleum Liquids | GT | 60.5 | 43.2 | Jun 2012 | Operating | — | coming soon |
| 4 | Petroleum Liquids | GT | 60.5 | 43.2 | Jun 2012 | Operating | — | coming soon |
Owner / operator
Operator: Generation Bridge II Connecticut, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Generation Bridge II Connecticut, LLC | 71.7% | 460 MW |
| Generation Bridge II New Haven LLC | 28.3% | 182 MW |
Nearby plants
Within 80 km.
| UI RCP New Haven Fuel Cell | 3 MW | 0.7 km |
| IKEA New Haven Rooftop PV & Fuel Cell | 1 MW | 1.8 km |
| Medtronic - New Haven | 2 MW | 6.6 km |
| Medtronic - New Haven 2 | 2 MW | 7 km |
| Town of Branford | 1 MW | 7.9 km |
| Park Solar | 1 MW | 9 km |