Obviously solar hot water heaters don't generate any power at all, but they do reduce the amount of power which would have been drawn from the grid. (readfearn.com)
Without one, a family wishing for hot water would have to buy an electric water heater for about the same price and pay up to $ 120 per year for electricity. (psmag.com)
There would be an on - demand hot water heater in the kitchen and another in the bath. (theletteredcottage.net)