Tenth Street
New London County, Connecticut · EIA plant ID 583 · Operator: City of Norwich - (CT)
Nameplate1MWSummer 1 MW
Generators1in service
Net generation2GWh12 mo to Dec 2025
Capacity factor22%hydro units, summer MW
Heat rate—thermal plants only
First online1967
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 | 0.5 | 6.5% | — |
| 2002 | 2.2 | 24.8% | — |
| 2003 | 3 | 34.5% | — |
| 2004 | 2.9 | 32.7% | — |
| 2005 | 3.1 | 35.5% | — |
| 2006 | 3.8 | 43.7% | — |
| 2007 | 1.7 | 19.7% | — |
| 2008 | 3.2 | 36.3% | — |
| 2009 | 3 | 34.1% | — |
| 2010 | 2 | 22.5% | — |
| 2011 | 3.7 | 42.1% | — |
| 2012 | 2.9 | 33.3% | — |
| 2013 | 2.6 | 30.1% | — |
| 2014 | 2.1 | 24.5% | — |
| 2015 | 1.3 | 15.2% | — |
| 2016 | 2.3 | 26.0% | — |
| 2017 | 4.3 | 49.6% | — |
| 2018 | 2.6 | 29.9% | — |
| 2019 | 4 | 45.4% | — |
| 2020 | 4.2 | 48.0% | — |
| 2021 | 6.1 | 69.1% | — |
| 2022 | 3.6 | 41.2% | — |
| 2023 | 3.5 | 40.2% | — |
| 2024 | 2.1 | 24.1% | — |
| 2025 | 1.9 | 22.1% | — |
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 | 1.4 | 1 | May 1967 | Operating | — | coming soon |
Owner / operator
Operator: City of Norwich - (CT). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| City of Norwich - (CT) | 100.0% | 1 MW |
Nearby plants
Within 80 km.
| North Main Street | retired | 1.8 km |
| Tunnel | 21 MW | 2 km |
| Norwich WWTP | 2 MW | 3.1 km |
| Backus Microgrid Project | 10 MW | 3.6 km |
| Taftville | 2 MW | 3.8 km |
| Wheelabrator Lisbon | 15 MW | 5.1 km |