Explore the largest hydro power plants in CAISO and see all the utility-scale hydro projects in CAISO on a map.
Last updated: May 2026
On this page, you can explore our real-time database of hydro power plants in CAISO. Each month, we track hydro projects and update our list of the largest hydro power plants in CAISO.
As of May 2026, there are 196 utility-scale hydro power plants in CAISO, according to Cleanview's project tracker. Their total operating capacity is 8,818 MW.
Total Hydro Power Plants
196
Total Capacity
8,818 MW
Built in 2025
0
Map of hydro power plants in CAISO. Marker size reflects capacity — only facilities with reported capacity data are shown.
1,053 MW
Year Operational: June 1984
Location: Fresno, California
644 MW
Year Operational: February 1969
Location: Butte, California
424 MW
Year Operational: June 1968
Location: Merced, California
315 MW
Year Operational: October 1969
Location: Yuba, California
276 MW
Year Operational: July 1994
Location: San Bernardino, California
253 MW
Year Operational: November 1989
Location: Calaveras, California
200 MW
Year Operational: December 1987
Location: Fresno, California
190 MW
Year Operational: March 1960
Location: Madera, California
180 MW
Year Operational: August 1960
Location: Tuolumne, California
1 MW
Year Operational: September 2024
Location: San Bernardino, California
38 MW
Year Operational: June 2017
Location: Fresno, California
2 MW
Year Operational: November 2014
Location: Humboldt, California
30 MW
Year Operational: March 2012
Location: Tuolumne, California
2 MW
Year Operational: May 2002
Location: San Diego, California
30 MW
Year Operational: December 2001
Location: Riverside, California
3 MW
Year Operational: September 1999
Location: San Bernardino, California
33 MW
Year Operational: August 1996
Location: San Bernardino, California
24 MW
Year Operational: December 1994
Location: San Bernardino, California
Cleanview