Making the switch to an on-demand hot water heater make a lot of sense. But if you haven't made the switch yet, save energy and money by insulating your hot water tank. Instructions for insulating your tank are available for the EERE.
Building a passive solar hot water heater is a great idea, too. It's probably one of the easiest do-it-yourself solar energy projects.
Whether you want to learn how to grow and raise your own food, build your own root cellar, or create a green dream home, come out and learn everything you need to know — and then some!LEARN MORE