Furthermore, in order to integrate more wind energy into an island system in Alaska, the electricityutility installed a 3MW battery storage system instead of connecting more diesel generation asspinning reserve. In addition to mitigating the curtailment of energy from wind farms, the lead-acidbattery system is capable of providing frequency response within 0.5s if required.
The Zhangbei National Wind and Solar Energy Storage and Transmission Demonstration Projectincludes a total of 17MW/70MWh of energy storage through a combination of lithium-ion andvanadium redox flow battery technologies. The use of batteries supports the integration of wind, solarand other renewable energy providing frequency regulation and voltage support to the grid