China Mill Hydro
Merrimack County, New Hampshire · EIA plant ID 50103 · Operator: New Hampshire Hydro Associates
Nameplate2MWSummer 1 MW
Generators1in service
Net generation3GWh12 mo to Dec 2025
Capacity factor7%hydro units, summer MW
Heat rate—thermal plants only
First online1981
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 | 1.2 | 8.0% | — |
| 2002 | 1.9 | 12.4% | — |
| 2003 | 0.3 | 2.0% | — |
| 2004 | 3.5 | 23.6% | — |
| 2005 | 5 | 34.3% | — |
| 2006 | 5.1 | 34.6% | — |
| 2007 | 3.4 | 23.0% | — |
| 2008 | 5.6 | 37.5% | — |
| 2009 | 3.8 | 25.8% | — |
| 2010 | 3.3 | 22.3% | — |
| 2011 | 2.3 | 15.3% | — |
| 2012 | 1.2 | 8.2% | — |
| 2013 | 4 | 26.8% | — |
| 2014 | 3.4 | 23.1% | — |
| 2015 | 2.1 | 13.8% | — |
| 2016 | 2.8 | 18.8% | — |
| 2017 | 3.2 | 21.6% | — |
| 2018 | 3.7 | 24.6% | — |
| 2019 | 3.3 | 22.1% | — |
| 2020 | 3.1 | 20.8% | — |
| 2021 | 3.6 | 24.5% | — |
| 2022 | 3.3 | 22.4% | — |
| 2023 | 4 | 27.1% | — |
| 2024 | 2.8 | 31.9% | — |
| 2025 | 2.6 | 29.3% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN 1 | Conventional Hydroelectric | HY | 1.7 | 1 | Jul 1981 | Operating | — | coming soon |
| GEN | Conventional Hydroelectric | HY | 1.8 | 1.7 | Jul 1981 | not_current | — | coming soon |
| GEN1 | Conventional Hydroelectric | HY | 1.8 | 1.7 | Jul 1981 | not_current | — | coming soon |
Owner / operator
Operator: New Hampshire Hydro Associates. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Brady Sullivan Properties | 100.0% | 2 MW |
Nearby plants
Within 80 km.
| Pembroke Hydro | 3 MW | 0.5 km |
| Merrimack | 496 MW | 1.6 km |
| Hooksett | 2 MW | 3 km |
| Garvins Falls | 12 MW | 5.7 km |
| Amoskeag | 16 MW | 14.1 km |
| Gregg Falls | 4 MW | 15.2 km |