Investment in grid-level energy storage is expected to triple over the next five years, with a multitude of players delivering a wide variety of technologies, each with its own benefits and drawbacks. Duke Energy recently installed a hybrid energy storage system (HESS) that combines high-capacity batteries with fast-responding ultracapacitors. The pilot project will provide peak demand response, load shifting, and support for a utility-owned 1.2 MW photovoltaic array.
Hybrid Energy Storage System Combines Ultracapacitors and Batteries
on July 25, 2016
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