article_snippet.sent: the technology powers up overnight when electricity rates are cheaper.
article_snippet.sent: Users can then switch a $3,000 (£1,980) home battery that can power an entire house for eight hours on during the day to use the home during the day.
article_snippet.sent: a report warning about disruption would then discharge this cheap electricity during the day in quantities large enough to be useful to homes and businesses.
article_snippet.sent: However, it would likely last far less time than eight hours during the mornings and evenings, when homes use the vast majority of homes electricity.
article_snippet.sent: it could also let savvy consumers take advantage of power companies' lower rates during the night and use the cheaper, stored energy during peak periods.
article_snippet.sent: The technology could let savvy consumers take advantage of power companies' lower rates during the night and use the cheaper, stored energy during peak periods.  