Explore the largest hydro power plants in Massachusetts and see all the utility-scale hydro projects in Massachusetts on a map.
Last updated: May 2026
On this page, you can explore our real-time database of hydro power plants in Massachusetts. Each month, we track hydro projects and update our list of the largest hydro power plants in Massachusetts.
As of May 2026, there are 33 utility-scale hydro power plants in Massachusetts, according to Cleanview's project tracker. Their total operating capacity is 2,107 MW.
Total Hydro Power Plants
33
Total Capacity
2,107 MW
Built in 2025
0
Map of hydro power plants in Massachusetts. Marker size reflects capacity — only facilities with reported capacity data are shown.
1,168 MW
Year Operational: October 1973
Location: Franklin, Massachusetts
666 MW
Year Operational: October 1974
Location: Berkshire, Massachusetts
62 MW
Year Operational: January 1917
Location: Franklin, Massachusetts
33 MW
Year Operational: November 1983
Location: Hampden, Massachusetts
33 MW
Year Operational: January 1930
Location: Hampden, Massachusetts
23 MW
Year Operational: October 1985
Location: Middlesex, Massachusetts
18 MW
Year Operational: October 1974
Location: Berkshire, Massachusetts
15 MW
Year Operational: July 1981
Location: Essex, Massachusetts
11 MW
Year Operational: October 1974
Location: Berkshire, Massachusetts
1 MW
Year Operational: July 2014
Location: Berkshire, Massachusetts
2 MW
Year Operational: December 2006
Location: Middlesex, Massachusetts
2 MW
Year Operational: July 2001
Location: Suffolk, Massachusetts
23 MW
Year Operational: October 1985
Location: Middlesex, Massachusetts
2 MW
Year Operational: May 1985
Location: Hampden, Massachusetts
1 MW
Year Operational: March 1985
Location: Hampden, Massachusetts
33 MW
Year Operational: November 1983
Location: Hampden, Massachusetts
2 MW
Year Operational: January 1982
Location: Hampden, Massachusetts
15 MW
Year Operational: July 1981
Location: Essex, Massachusetts
Cleanview