Hawaiian Electric Seeks Energy Storage Support
To meet its goal of adding more renewable generation to the Oahu grid, Hawaiian Electric is seeking proposals for one or more large-scale energy storage systems able to store 60 to 200 megawatts for up to 30 minutes.
With the continuing dramatic growth on Oahu of utility-scale wind and solar projects and rooftop solar now in use by more than 11 percent of Hawaiian Electric customers, energy storage is needed to help ride through sudden changes in availability of these variable resources. When power supplied by these resources drops suddenly, energy storage systems could help maintain reliable service and avoid customer outages as fast-starting firm generation units are brought online.
Energy storage can provide not only electricity but also so-called “auxiliary services” to operate the grid, such as sub-second frequency response and minute-to-minute load following – power output adjustments as demand for electricity fluctuates throughout the day.
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