Tenth Street
Hydro power plant in New London County, Connecticut. 1.4 MW of nameplate capacity across 1 generator, operated by City of Norwich - (CT).
Also known as EIA plant 583
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 1.4 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- May 1967First generator online
- Operator
- City of Norwich - (CT)EIA operator ID 13831
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- None linkedNo verified ISO node
- Location
- New London County, CT41.5390, −72.0509
- EIA plant ID
- 583EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Tenth Street produces
Free · EIA-923Net generation, 2025
1.94 GWh
1,938 MWh, final
Capacity factor, 2025
15.8%
2024: 17.2%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
1.3–6.1
GWh a year. Low 2015, high 2021
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 0 | Not reported | 12 of 12 |
| 2001 | 509 | Not reported | 11 of 12 |
| 2002 | 2,172 | Not reported | 12 of 12 |
| 2003 | 3,026 | Not reported | 12 of 12 |
| 2004 | 2,876 | Not reported | 12 of 12 |
| 2005 | 3,109 | Not reported | 12 of 12 |
| 2006 | 3,830 | Not reported | 12 of 12 |
| 2007 | 1,729 | Not reported | 12 of 12 |
| 2008 | 3,191 | Not reported | 12 of 12 |
| 2009 | 2,990 | Not reported | 12 of 12 |
| 2010 | 1,974 | 16.1% | 12 of 12 |
| 2011 | 3,692 | 30.1% | 12 of 12 |
| 2012 | 2,924 | 23.8% | 12 of 12 |
| 2013 | 2,641 | 21.5% | 12 of 12 |
| 2014 | 2,144 | 17.5% | 12 of 12 |
| 2015 | 1,331 | 10.8% | 12 of 12 |
| 2016 | 2,287 | 18.6% | 12 of 12 |
| 2017 | 4,348 | 35.5% | 12 of 12 |
| 2018 | 2,618 | 21.3% | 12 of 12 |
| 2019 | 3,978 | 32.4% | 12 of 12 |
| 2020 | 4,217 | 34.3% | 12 of 12 |
| 2021 | 6,051 | 49.3% | 12 of 12 |
| 2022 | 3,609 | 29.4% | 12 of 12 |
| 2023 | 3,522 | 28.7% | 12 of 12 |
| 2024 | 2,113 | 17.2% | 12 of 12 |
| 2025 | 1,938 | 15.8% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 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 accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Conventional Hydroelectric | 1.4 | May 1967 |
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 City of Norwich - (CT) as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Tenth Street
More plants operated by City of Norwich - (CT)
Questions about Tenth Street
How much power does Tenth Street produce?
Tenth Street reported 1,938 MWh (1.94 GWh) of net generation in 2025, a 15.8% capacity factor on 1.4 MW of nameplate capacity.
Where is Tenth Street?
Tenth Street is in New London County, Connecticut, at 41.5390, −72.0509. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Tenth Street?
EIA-860M for August 2026 lists City of Norwich - (CT) as the operator (EIA operator ID 13831). The operator is not always the owner.
When did Tenth Street start operating?
Its first generator began operating in May 1967, according to EIA-860M.
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)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page