Electricity Generation Aggregated by Massachusetts County
| State Rank | County | Net Generation (Past Year) | Power Plants |
|---|---|---|---|
| #13 | Dukes County, MA | 144.1 GWh | 7 |
| #9 | Suffolk County, MA | 429.1 GWh | 13 |
| #8 | Barnstable County, MA | 624.8 GWh | 23 |
| #10 | Franklin County, MA | 280.2 GWh | 33 |
| #11 | Hampshire County, MA | 270.0 GWh | 37 |
| #3 | Essex County, MA | 2.5 TWh | 39 |
| #1 | Norfolk County, MA | 7.0 TWh | 39 |
| #12 | Berkshire County, MA | 246.9 GWh | 44 |
| #4 | Middlesex County, MA | 1.9 TWh | 68 |
| #6 | Bristol County, MA | 943.8 GWh | 71 |
| #7 | Plymouth County, MA | 823.6 GWh | 84 |
| #5 | Hampden County, MA | 1.8 TWh | 86 |
| #2 | Worcester County, MA | 5.7 TWh | 190 |
Net Generation data is based on the last 12 months since Mar 2026
Top 20 Massachusetts Counties by Net Generation
Totals are based on the most recent 12 months net generation- Norfolk County, MA7.04 TWh
- Worcester County, MA5.70 TWh
- Essex County, MA2.51 TWh
- Middlesex County, MA1.91 TWh
- Hampden County, MA1.76 TWh
- Bristol County, MA943.79 GWh
- Plymouth County, MA823.62 GWh
- Barnstable County, MA624.80 GWh
- Suffolk County, MA429.07 GWh
- Franklin County, MA280.19 GWh
- Hampshire County, MA269.99 GWh
- Berkshire County, MA246.89 GWh
- Dukes County, MA144.10 GWh