Homeowners are beginning to adopt solar power batteries to use in conjunction with rooftop PVs. In addition to storing power for use at night, the batteries also provide a back-up power source in the event of blackouts.
Home storage system capacity varies in complexity and price. Battery units range from 2 kilowatt hours to nearly 20 kilowatt hours. A typical home uses 30 kilowatt hours of electricity per day. Residential storage costs between $1,300 and $2,000 per kilowatt hour or about $8,300 to $12,800 for a 6.4 kilowatt hour system.
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