Wailuku River Hydroelectric
Wailuku River Hydroelectric is a 10 MW hydroelectric power plant in Hawaii County, Hawaii, operated by Wailuku Holding Company LLC. EIA-860M lists 2 generating units here. Its units entered service in 1993.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 10.4 MW
- 9.8 MW net summer
- Generating units
- 2
- In service
- 1993
- EIA plant ID
- 54827
Where it is
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- County
- Hawaii County, Hawaii
- Coordinates
- 19.713, -155.1486
- Balancing authority
- Not reported
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- Wailuku Holding Company LLC
- Primary energy source
- Hydro
- Technologies
- Conventional Hydroelectric
- Status
- Operating
Wailuku River Hydroelectric: FAQ
- Where is Wailuku River Hydroelectric?
- In Hawaii County, Hawaii (HI). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Wailuku River Hydroelectric?
- 10 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
- Who owns Wailuku River Hydroelectric?
- EIA-860M names Wailuku Holding Company LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Wailuku River Hydroelectric LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Wailuku Holding Company LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Wailuku River Hydroelectric LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Wailuku River Hydroelectric still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.