Directory of Power Plants in Massachusetts
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Quittacas Pond Solar | RWE Clean Energy | Rochester, MA | ISO New England (ISNE) | 5.5 GWh | Nov 2013 | Dec 2025 | Solar |
Browse Power Plants By Massachusetts Counties
Figures are based on June 2026 generation numbers.| County | State Rank | Active Plants | Jun 2026 Generation |
|---|---|---|---|
| Berkshire County, MA | # 13 | 46 | 163.5 GWh |
| Franklin County, MA | # 12 | 33 | 176.1 GWh |
| Hampshire County, MA | # 11 | 39 | 226.9 GWh |
| Suffolk County, MA | # 10 | 14 | 431.9 GWh |
| Dukes County, MA | # 9 | 7 | 470.9 GWh |
| Barnstable County, MA | # 8 | 25 | 610.8 GWh |
| Bristol County, MA | # 7 | 75 | 645.8 GWh |
| County | State Rank | Active Plants | Jun 2026 Generation |
|---|---|---|---|
| Plymouth County, MA | # 6 | 86 | 811.3 GWh |
| Hampden County, MA | # 5 | 90 | 1.9 TWh |
| Middlesex County, MA | # 4 | 70 | 1.9 TWh |
| Essex County, MA | # 3 | 41 | 2.3 TWh |
| Worcester County, MA | # 2 | 200 | 5.1 TWh |
| Norfolk County, MA | # 1 | 40 | 6.4 TWh |