Thundermist Hydro
Providence County, Rhode Island · EIA plant ID 54688 · Operator: Woonsocket City of
Nameplate1MWSummer 1 MW
Generators1in service
Net generation3GWh12 mo to Dec 2025
Capacity factor34%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 | 0 | 0.0% | — |
| 2002 | 0 | 0.0% | — |
| 2003 | 0 | 0.0% | — |
| 2022 | 4.3 | 44.3% | — |
| 2023 | 4 | 42.0% | — |
| 2024 | 0.1 | 0.9% | — |
| 2025 | 3.3 | 33.8% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| HYD1 | Conventional Hydroelectric | HY | 1.2 | 1.1 | Jun 1981 | Operating | — | coming soon |
Owner / operator
Operator: Woonsocket City of. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Woonsocket City of | 100.0% | 1 MW |
Nearby plants
Within 80 km.
| Blackstone/Tupperware | 2 MW | 2.8 km |
| MA Blackstone | 7 MW | 3.2 km |
| GDIM 2, LLC | 10 MW | 3.5 km |
| GDIM 1, LLC | 10 MW | 3.7 km |
| GDIM 3, LLC | 10 MW | 4 km |
| GDIM 4, LLC | 10 MW | 4 km |