These low-voltage water-heating elements are for use as diversion loads for wind or hydroelectric systems. Use one or more of these heating elements with a charge control designed for load diversion, such as the Xantrex C40 or C60, to turn your excess power into hot water. They fit most standard electric water heaters with screw-in elements. We have one model for 12- and 24 volt systems and another for higher power 24- volt systems and 48 volt systems. The 12/24-volt element can be ...