Ice energy 'batteries in off-peak (low energy cost) periods use copper coils filled with cold refrigerant to create ice from the homeowner's regular tap water.

Ice Energy公司的电池在非用电高峰期(此时耗能成本低)时可借助注满冷凝剂的铜线圈，将用户家的普通自来水冷冻成冰。

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And if he wanted them sooner for any reason at all, he could tap them simply by paying regular taxes and a company-set penalty (or "haircut") of as little as 2%.

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