Power plant · Massachusetts, United States
Bear Swamp
Bear Swamp is a power plant in Massachusetts, United States, with 666 MW of capacity, owned by Bear Swamp Power Company LLC (50%) and Emera Inc (50%).
Facts
Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Location | Massachusetts | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Status | Operating | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Start year | 1974 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Owner | Bear Swamp Power Company LLC (50%) | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Owner | Emera Inc (50%) | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Operator | Bear Swamp Power Company LLC | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Capacity | 666 MW | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Technology | Hydroelectric Pumped Storage | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Coordinates | 42.6839, -72.9599 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
Research on this power plant and its owner.Who owns it up to the parent company, its grid connection and planning status, and an introduction to the owner.
Request researchHow it compares
Bear Swamp is the 5th-largest of 8 power plants in Massachusetts and the 527th-largest of 800 in the United States by capacity; its 666 MW is <0.1% of the 839,036 MW we hold for the United States. Ranks and totals cover the power plants in our data that report their capacity, not every one in existence. Power plants planned, permitted or under construction are ranked apart.
| Within | Rank | Total | Share |
|---|---|---|---|
| Massachusetts | 5th of 8 | 6,697 MW | 9.9% |
| United States | 527th of 800 | 839,036 MW | <0.1% |
| All power plants in our data | 603rd of 12,032 | 1,190,447 MW | <0.1% |
Nearby
Within 50 km of this power plant: 2 mines and 1 data center, measured from the coordinates in the facts above.
| Name | Kind | Size | Status | Distance |
|---|---|---|---|---|
| ADAMS | Mine | — | Operating | 13 km |
| White Wolf Mine | Mine | — | Operating | 36 km |
| The Putney School data center, Windham County | Data center | — | — | 47 km |
Owners, operator and place
Other power plants in Massachusetts
- Canal1,495 MW
- Northfield Mountain1,168 MW
- Fore River Generating Station872 MW
- Salem Harbor Power Development LP798 MW
- ANP Bellingham Energy Project578 MW
- ANP Blackstone Energy Project578 MW
- Stony Brook542 MW
- Vineyard Wind 1800 MW · under construction
Data on this page
- Contains public sector information licensed under the Open Government Licence v3.0. DESNZ Renewable Energy Planning Database (REPD), Open Government Licence v3.0.
- Source: U.S. Energy Information Administration (Sep 2026). EIA-860 / 860M / 923, Public domain.
- JRC Open Power Plants Database (JRC-PPDB-OPEN), European Commission, Joint Research Centre. JRC Open Power Plants Database (JRC-PPDB-OPEN), CC BY 4.0.
- Bundesnetzagentur, Marktstammdatenregister. Marktstammdatenregister, DL-DE-BY-2.0.
- MSHA Mines Data Set. MSHA Mines Data Set, Public domain.
- Dutch power station owners' and operators' pages. Dutch power station owners' and operators' pages, Facts only, each linked to its page.
- © OpenStreetMap contributors. OpenStreetMap data centers, ODbL 1.0.
- Contains public sector information licensed under the Open Government Licence v3.0. Planning Inspectorate: National Infrastructure Projects, Open Government Licence v3.0.
- RVO SDE(+)(+) projecten in beheer and SDE viewer. RVO SDE(+)(+) projecten in beheer and SDE viewer, Free reuse, no attribution required.