GenConn Devon LLC
New Haven County, Connecticut · EIA plant ID 57070 · Operator: GenConn Devon LLC
Nameplate242MWSummer 196 MW
Generators4in service
Net generation15GWh12 mo to Dec 2025
Capacity factor1%gas/coal/oil units, summer MW
Heat rate9,987Btu/kWhfossil units, electric fuel, HHV
First online2010Runs 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) |
|---|---|---|---|
| 2010 | 16.8 | 1.8% | 10,398 |
| 2011 | 10.8 | 0.6% | 9,653 |
| 2012 | 4 | 0.2% | 10,135 |
| 2013 | 7.6 | 0.5% | 10,282 |
| 2014 | 18.6 | 1.1% | 9,476 |
| 2015 | 24.9 | 1.5% | 9,770 |
| 2016 | 13 | 0.8% | 10,001 |
| 2017 | 14.6 | 0.9% | 9,611 |
| 2018 | 10 | 0.6% | 9,700 |
| 2019 | -2 | -0.1% | — |
| 2020 | 4 | 0.2% | 22,176 |
| 2021 | 1 | 0.1% | — |
| 2022 | -0.3 | -0.0% | — |
| 2023 | 2.3 | 0.1% | 26,478 |
| 2024 | 4.3 | 0.3% | 10,696 |
| 2025 | 15.1 | 0.9% | 9,987 |
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 |
|---|---|---|---|---|---|---|---|---|
| 15 | Petroleum Liquids | GT | 60.5 | 49 | Jul 2010 | Operating | — | coming soon |
| 16 | Petroleum Liquids | GT | 60.5 | 49 | Jun 2010 | Operating | — | coming soon |
| 17 | Petroleum Liquids | GT | 60.5 | 49 | Jun 2010 | Operating | — | coming soon |
| 18 | Petroleum Liquids | GT | 60.5 | 49 | Jun 2010 | Operating | — | coming soon |
Owner / operator
Operator: GenConn Devon LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| GenConn Devon LLC | 100.0% | 242 MW |
Nearby plants
Within 80 km.
| Devon Station | 223 MW | 0.2 km |
| Milford Power Project | 578 MW | 1.6 km |
| Sikorsky Aircraft CHP | 10 MW | 4.4 km |
| Digital Fairfield | retired | 4.6 km |
| Emerald Gardens PKI, LLC | 2 MW | 6.9 km |
| Dynamic Energy CT STAG | 2 MW | 7.3 km |