31 MW Batteries (10 MW) + Onshore Wind Turbine (21 MW) operating in Maui, HI
31 MW
Nameplate Capacity
2
Generators
units
Hybrid (2)
Technology
Batteries + Onshore Wind Turbine
2012
Operating Since
Coordinates
20.7947, -156.5360
County
Maui, HI
Nearby Plants
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Evergreen Wind, LLC | TerraForm Power Operating LLC [100%] | — |
| Owner(s) | Evergreen Wind, LLC | TerraForm Power Operating LLC [100%] | — |
| Status | Operating | operating | — |
GEM identifies the owner as TerraForm Power Operating LLC [100%]
This entity is not yet in the GEM ownership database — chain unavailable.
Kaheawa Wind Power II LLC is a hybrid wind and battery energy storage system (BESS) located in Maui County, Hawaii. The plant has a total capacity of 31 MW and is operated by Evergreen Wind, LLC. Commissioned in 2012, the facility utilizes both onshore wind turbines and battery storage. The wind component consists of two GE Wind GE1.5-77 turbines, each with a rotor diameter of 77 meters and a hub height of 65 meters. The battery energy storage system has a capacity of 20 MWh and a duration of 2 hours, employing lithium-ion battery chemistry.
The plant's latest annual generation was 47,902 MWh, resulting in a capacity factor of 17.6%. Kaheawa Wind Power II ranks as the 11th largest out of 20 wind plants in Hawaii, and 649th out of 1205 nationally. The plant's primary fuel source is wind (MWH). News coverage related to the plant includes topics such as industry developments, hazards, and regulatory matters.
Generated from EIA, GEM, and public data sources
NERC Region
—
Balancing Authority
—
Grid Voltage
69 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
3.3K MWh
Latest Month
47.9K MWh
Annual Generation
17.6%
Capacity Factor
No financial data available for this plant.
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
Last updated 2026-03-14
View all articles