Pejepscot Hydroelectric Project
Hydro power plant in Sagadahoc County, Maine. 13.5 MW of nameplate capacity across 4 generators, operated by Topsham Hydro Partners.
Also known as EIA plant 50758
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 13.5 MWNameplate
- Generators
- 4 operatingEIA-860M, August 2026
- Operating since
- November 1987First generator online
- Operator
- Topsham Hydro PartnersEIA operator ID 19013
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 1 ISONE nodeResource nodes with prices
- Location
- Sagadahoc County, ME43.9574, −70.0242
- EIA plant ID
- 50758EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Pejepscot Hydroelectric Project produces
Free · EIA-923Net generation, 2025
49.7 GWh
49,699 MWh, final
Capacity factor, 2025
42.0%
2024: 40.9%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
42.2–70.6
GWh a year. Low 2018, high 2023
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | 49,782 | Not reported | 12 of 12 |
| 2002 | 57,983 | Not reported | 12 of 12 |
| 2003 | 63,458 | Not reported | 12 of 12 |
| 2004 | 63,415 | Not reported | 12 of 12 |
| 2005 | 75,803 | Not reported | 12 of 12 |
| 2006 | 86,761 | Not reported | 12 of 12 |
| 2007 | 71,571 | Not reported | 12 of 12 |
| 2008 | 89,098 | Not reported | 12 of 12 |
| 2009 | 82,367 | Not reported | 12 of 12 |
| 2010 | 74,823 | 62.3% | 12 of 12 |
| 2011 | 79,453 | 66.2% | 12 of 12 |
| 2012 | 75,002 | 62.3% | 12 of 12 |
| 2013 | 79,932 | 66.6% | 12 of 12 |
| 2014 | 75,478 | 62.9% | 12 of 12 |
| 2015 | 65,466 | 54.5% | 12 of 12 |
| 2016 | 59,526 | Not reported | 12 of 12 |
| 2017 | 64,869 | 54.9% | 12 of 12 |
| 2018 | 42,229 | 35.7% | 12 of 12 |
| 2019 | 42,702 | 36.1% | 12 of 12 |
| 2020 | 64,423 | 54.3% | 12 of 12 |
| 2021 | 51,477 | 43.5% | 12 of 12 |
| 2022 | 61,182 | 51.7% | 12 of 12 |
| 2023 | 70,556 | 59.7% | 12 of 12 |
| 2024 | 48,554 | 40.9% | 12 of 12 |
| 2025 | 49,699 | 42.0% | 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 account · ISONEEmissions
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 |
|---|---|---|---|
| GEN1 | Conventional Hydroelectric | 12.3 | November 1987 |
| GEN2 | Conventional Hydroelectric | 0.4 | November 1987 |
| GEN3 | Conventional Hydroelectric | 0.3 | November 1987 |
| GEN4 | Conventional Hydroelectric | 0.5 | November 1987 |
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 Topsham Hydro Partners 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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Questions about Pejepscot Hydroelectric Project
How much power does Pejepscot Hydroelectric Project produce?
Pejepscot Hydroelectric Project reported 49,699 MWh (49.7 GWh) of net generation in 2025, a 42.0% capacity factor on 13.5 MW of nameplate capacity.
Where is Pejepscot Hydroelectric Project?
Pejepscot Hydroelectric Project is in Sagadahoc County, Maine, at 43.9574, −70.0242. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Pejepscot Hydroelectric Project?
EIA-860M for August 2026 lists Topsham Hydro Partners as the operator (EIA operator ID 19013). The operator is not always the owner.
When did Pejepscot Hydroelectric Project start operating?
Its first generator began operating in November 1987, according to EIA-860M.
Does InfraMap have power prices for Pejepscot Hydroelectric Project?
Yes. InfraMap has ISONE day-ahead and real-time prices at 1 price node linked to Pejepscot Hydroelectric Project, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
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)
- ISONE day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page