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A comment on The humble water heater could be the savior of our energy infrastructure woes. Parent comment

Re:The humble water heater could be the savior of our energy... by deviledeggs on Wednesday July 07, 2021 @01:49AM (#27757842)
> For some reason they've really only been widely available in the US in the past few years.

I think it's cheap energy. In places like Japan they've been using heat pumps a long time

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