China Mill Hydro
Hydro power plant in Merrimack County, New Hampshire. 1.7 MW of nameplate capacity across 1 generator, operated by New Hampshire Hydro Associates.
Also known as EIA plant 50103
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 1.7 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- July 1981First generator online
- Operator
- New Hampshire Hydro AssociatesEIA operator ID 13442
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 1 ISONE nodeResource nodes with prices
- Location
- Merrimack County, NH43.1287, −71.4599
- EIA plant ID
- 50103EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power China Mill Hydro produces
Free · EIA-923Net generation, 2025
2.56 GWh
2,563 MWh, final
Capacity factor, 2025
17.2%
2024: 18.8%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
2.1–4.0
GWh a year. Low 2015, high 2023
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | 1,204 | Not reported | 12 of 12 |
| 2002 | 1,856 | Not reported | 12 of 12 |
| 2003 | 293 | Not reported | 12 of 12 |
| 2004 | 3,488 | Not reported | 12 of 12 |
| 2005 | 5,045 | Not reported | 12 of 12 |
| 2006 | 5,099 | Not reported | 12 of 12 |
| 2007 | 3,427 | Not reported | 12 of 12 |
| 2008 | 5,599 | Not reported | 12 of 12 |
| 2009 | 3,848 | Not reported | 12 of 12 |
| 2010 | 3,314 | 22.3% | 12 of 12 |
| 2011 | 2,271 | 15.2% | 12 of 12 |
| 2012 | 1,229 | 8.2% | 12 of 12 |
| 2013 | 3,985 | 26.8% | 12 of 12 |
| 2014 | 3,432 | 23.0% | 12 of 12 |
| 2015 | 2,061 | 13.8% | 12 of 12 |
| 2016 | 2,804 | 18.8% | 12 of 12 |
| 2017 | 3,223 | 21.6% | 12 of 12 |
| 2018 | 3,663 | 24.6% | 12 of 12 |
| 2019 | 3,294 | 22.1% | 12 of 12 |
| 2020 | 3,099 | 20.8% | 12 of 12 |
| 2021 | 3,646 | 24.5% | 12 of 12 |
| 2022 | 3,339 | 22.4% | 12 of 12 |
| 2023 | 4,032 | 27.1% | 12 of 12 |
| 2024 | 2,806 | 18.8% | 12 of 12 |
| 2025 | 2,563 | 17.2% | 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 |
|---|---|---|---|
| GEN 1 | Conventional Hydroelectric | 1.7 | July 1981 |
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 New Hampshire Hydro Associates 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 China Mill Hydro
How much power does China Mill Hydro produce?
China Mill Hydro reported 2,563 MWh (2.56 GWh) of net generation in 2025, a 17.2% capacity factor on 1.7 MW of nameplate capacity.
Where is China Mill Hydro?
China Mill Hydro is in Merrimack County, New Hampshire, at 43.1287, −71.4599. It is in the ISO New England Inc. balancing area (ISNE).
Who operates China Mill Hydro?
EIA-860M for August 2026 lists New Hampshire Hydro Associates as the operator (EIA operator ID 13442). The operator is not always the owner.
When did China Mill Hydro start operating?
Its first generator began operating in July 1981, according to EIA-860M.
Does InfraMap have power prices for China Mill Hydro?
Yes. InfraMap has ISONE day-ahead and real-time prices at 1 price node linked to China Mill Hydro, 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