Sure Power’s large selection of rechargeable lithium-ion batteries are intended to be used for home energy storage and store electricity for solar self-consumption when the sun goes down, time of use load shifting, backup power, and off-the-grid use. The larger Powerpack is intended for commercial or electric utility grid use and can be used for peak shaving, load shifting, backup power, demand response, microgrids, renewable power integration, frequency regulation, and voltage control.