Electricity Generation Aggregated by Massachusetts County
| State Rank | County | Net Generation (Past Year) | Power Plants |
|---|---|---|---|
| #2 | Worcester County, MA | 5.6 TWh | 190 |
| #9 | Suffolk County, MA | 429.1 GWh | 13 |
| #7 | Plymouth County, MA | 842.6 GWh | 84 |
| #1 | Norfolk County, MA | 7.3 TWh | 38 |
| #4 | Middlesex County, MA | 2.0 TWh | 68 |
| #11 | Hampshire County, MA | 270.0 GWh | 37 |
| #5 | Hampden County, MA | 1.7 TWh | 86 |
| #10 | Franklin County, MA | 277.7 GWh | 33 |
| #3 | Essex County, MA | 2.6 TWh | 39 |
| #13 | Dukes County, MA | 9.9 GWh | 7 |
| #6 | Bristol County, MA | 947.8 GWh | 71 |
| #12 | Berkshire County, MA | 269.9 GWh | 44 |
| #8 | Barnstable County, MA | 460.3 GWh | 23 |
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