Taftville
New London County, Connecticut · EIA plant ID 554 · Operator: FirstLight Power Resources Services LLC
Nameplate2MWSummer 2 MW
Generators5in service
Net generation2GWh12 mo to Dec 2025
Capacity factor13%hydro units, summer MW
Heat rate—thermal plants only
First online1906
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), hydro 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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 4.1 | 30.4% | — |
| 2002 | 4.4 | 25.4% | — |
| 2003 | 7.6 | 43.6% | — |
| 2004 | 5.9 | 33.9% | — |
| 2005 | 5.4 | 30.7% | — |
| 2006 | 5.9 | 33.7% | — |
| 2007 | 5.1 | 29.1% | — |
| 2008 | 8.1 | 46.3% | — |
| 2009 | 7 | 40.0% | — |
| 2010 | 4.5 | 25.9% | — |
| 2011 | 7.8 | 44.4% | — |
| 2012 | 3.6 | 20.6% | — |
| 2013 | 3.9 | 22.4% | — |
| 2014 | 5 | 28.8% | — |
| 2015 | 4.1 | 23.6% | — |
| 2016 | 3.4 | 19.3% | — |
| 2017 | 5.7 | 32.6% | — |
| 2018 | 7.2 | 41.1% | — |
| 2019 | 5 | 28.3% | — |
| 2020 | 3.5 | 19.7% | — |
| 2021 | 4.2 | 23.7% | — |
| 2022 | 3.4 | 19.5% | — |
| 2023 | 4.7 | 26.8% | — |
| 2024 | 2.9 | 16.7% | — |
| 2025 | 2.2 | 12.8% | — |
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 | Conventional Hydroelectric | HY | 0.4 | 0.4 | Jan 1926 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 0.3 | 0.4 | Jan 1906 | Operating | — | coming soon |
| 3 | Conventional Hydroelectric | HY | 0.3 | 0.4 | Jan 1906 | Operating | — | coming soon |
| 4 | Conventional Hydroelectric | HY | 0.3 | 0.4 | Jan 1949 | Operating | — | coming soon |
| 5 | Conventional Hydroelectric | HY | 0.3 | 0.4 | Jan 1949 | Operating | — | coming soon |
Owner / operator
Operator: FirstLight Power Resources Services LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| FirstLight Hydro Generating Company | 100.0% | 2 MW |
Nearby plants
Within 80 km.
| Wheelabrator Lisbon | 15 MW | 1.4 km |
| Tunnel | 21 MW | 1.9 km |
| Tenth Street | 1 MW | 3.8 km |
| CMEEC - Norwich Stott St Solar Hybrid | 4 MW | 4.9 km |
| Backus Microgrid Project | 10 MW | 5.2 km |
| North Main Street | retired | 5.3 km |