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Kaua'i Dispatchable Solar Storage - 13 MW / 52MWh - SolarCity

Technology Type Lithium-ion Battery
Rated Power 13000 kW
URL More about Kaua'i Dispatchable Solar Storage - 13 MW / 52MWh - SolarCity
Kauaʻi Island Utility Cooperative (KIUC) has signed a power purchase agreement (PPA) with SolarCity for electricity from the first utility-scale solar array and battery storage system (13 MW / 52 MWh) designed to supply power to the grid in the evening, when demand is highest. The proposed SolarCity project next to KIUC’s Kapaia power plant is believed to be the first utility-scale system in the U.S. to provide dispatchable solar energy, meaning that the utility can count on electricity being available when it’s needed, even hours after the sun goes down. The 52 MWh battery system will feed up to 13 megawatts of electricity onto the grid to “shave” the amount of conventional power generation needed to meet the evening peak, which lasts from 5 p.m. to 10 p.m. By using the solar energy stored in the battery instead of diesel generators, KIUC will reduce its use of imported fossil fuels and also cut its greenhouse gas emissions.
This data has been validated by project staff through a review of publicly available information about the project, and verified by the project owner.
Project Status
Status Contracted
Project Includes Multiple Systems No

Kaua'i, Hawaii
United States

Utility Kauai Island Utility Cooperative
Utility Type Cooperative (Customer Owned)
Paired Grid Resource
Project Includes Multiple Systems No
Ownership & Value Chain Partners
Ownership Model Third-Party-Owned
Equity Owner 1 SolarCity
Energy Storage Technology Provider Tesla
Integrator Company SolarCity
Cost & Performance
Projected Project Lifetime 20 years
Performance 20-year power purchase agreement where KIUC will pay SolarCity $0.145/kWh
Service Use Case Electric Energy Time Shift
Renewables Energy Time Shift
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