Electricity Generation Aggregated by Massachusetts County
| State Rank | County | Net Generation (Past Year) | Power Plants |
|---|---|---|---|
| #13 | Dukes County, MA | 9.9 GWh | 7 |
| #12 | Berkshire County, MA | 269.9 GWh | 44 |
| #11 | Hampshire County, MA | 270.0 GWh | 37 |
| #10 | Franklin County, MA | 277.7 GWh | 33 |
| #9 | Suffolk County, MA | 429.1 GWh | 13 |
| #8 | Barnstable County, MA | 460.3 GWh | 23 |
| #7 | Plymouth County, MA | 842.6 GWh | 84 |
| #6 | Bristol County, MA | 947.8 GWh | 71 |
| #5 | Hampden County, MA | 1.7 TWh | 86 |
| #4 | Middlesex County, MA | 2.0 TWh | 68 |
| #3 | Essex County, MA | 2.6 TWh | 39 |
| #2 | Worcester County, MA | 5.6 TWh | 190 |
| #1 | Norfolk County, MA | 7.3 TWh | 38 |
Net Generation data is based on the last 12 months since Dec 2025
Top 20 Massachusetts Counties by Net Generation
Totals are based on the most recent 12 months net generation- Norfolk County, MA7.33 TWh
- Worcester County, MA5.59 TWh
- Essex County, MA2.56 TWh
- Middlesex County, MA1.97 TWh
- Hampden County, MA1.68 TWh
- Bristol County, MA947.79 GWh
- Plymouth County, MA842.63 GWh
- Barnstable County, MA460.30 GWh
- Suffolk County, MA429.06 GWh
- Franklin County, MA277.73 GWh
- Hampshire County, MA269.99 GWh
- Berkshire County, MA269.87 GWh
- Dukes County, MA9.90 GWh