PowerPlantFactsEvidence report · prepared 2 September 2026https://powerplantfacts.com/entity/547
EIA plant 547
Northfield · Franklin · MA
Northfield Mountain
Operated by FirstLight Power Resources, Inc. - MA
Published location
Where is Northfield Mountain?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
42.610683, -72.471643
Open the interactive map ↗Map data © OpenStreetMap contributors
Capacity is not generation. Nameplate MW describes equipment; annual MWh describes recorded output. Proposed and retired units are not added to operating capacity.
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | -16,074 MWh |
| 2 | -20,943 MWh |
| 3 | -21,898 MWh |
| 4 | -17,217 MWh |
| 5 | -20,822 MWh |
| 6 | -18,188 MWh |
| 7 | -29,951 MWh |
| 8 | -28,788 MWh |
| 9 | -16,169 MWh |
| 10 | -24,774 MWh |
| 11 | -29,942 MWh |
| 12 | -26,110 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| 1 | Hydroelectric Pumped Storage | WAT | 292 | OP |
| 2 | Hydroelectric Pumped Storage | WAT | 292 | OP |
| 3 | Hydroelectric Pumped Storage | WAT | 292 | OP |
| 4 | Hydroelectric Pumped Storage | WAT | 292 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
547
Sector
IPP Non-CHP
Water source
Connecticut River
Data edition
2024-final