Cleanview

Hydro power plants in Hawaii

Hawaii has 8 operating hydro power plants with 0.0 GW of capacity.

  • Operating8
HonoluluHilo

Under 50 MW50–249 MW250 MW and up

Updated monthly. Last updated November 2026.

The largest hydro power plants in Hawaii

Operating, by capacity

#Hydro power plantYear onlineCapacity
1Wailuku River Hydroelectric199310 MW
2Gay Robinson20198 MW
3Kaheka Hydro19255 MW
4Wainiha Hydro19104 MW
5Puueo20053 MW
6Kalaheo Hydro20162 MW
7Paia Hydroelectric Plant19121 MW
8Waiau Hydro19281 MW

Hydro power plants that came online most recently in Hawaii

Newest first

#Hydro power plantYear onlineCapacity
1Gay Robinson20198 MW
2Kalaheo Hydro20162 MW
3Puueo20053 MW
4Wailuku River Hydroelectric199310 MW
5Waiau Hydro19281 MW
6Kaheka Hydro19255 MW
7Paia Hydroelectric Plant19121 MW
8Wainiha Hydro19104 MW
The developer behind each project is on paid plans. See plans

How Cleanview tracks hydro power plants

Operating hydro power plants come from the EIA's monthly survey of power plants. Planned projects come from the grid operators' interconnection queues. We research who is developing each one, since a queue lists a project company, not its owner.

Questions about hydro power plants in Hawaii

How many hydro power plants are in Hawaii?
Hawaii has 8 operating utility-scale hydro power plants with 0.0 GW of capacity, according to the EIA's monthly survey of power plants.
What is the largest hydro power plant in Hawaii?
Wailuku River Hydroelectric in Hawaii County, Hawaii is the largest, at 10 MW. It came online in 1993.
How many hydro power plants were built in Hawaii in 2025?
0 hydro power plants came online in Hawaii in 2025, with 0 MW of capacity.
Who is developing hydro power plants in Hawaii?
Interconnection queues list each project under a project company, not the developer behind it. Cleanview researches the developer of every project and has them on paid plans.

More energy trackers for Hawaii

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