Given the uncertain nature of our current oil, gas and natural gas reserves, many homeowners are starting to look for viable alternatives. One option is to move toward energy independence, in which a household relies on alternative power sources instead of fossil fuels. So how does one achieve energy independence? Two new books provide valuable information on the subject.

The Homeowner's Guide to Renewable Energy by Dan Chiras covers all types of renewable energy, including solar electric, solar hot-water systems, passive solar design, passive cooling, wind power and micro-hydro systems. Chapters are also devoted to on-the-horizon technologies like hydrogen power and fuel cells. The author presents detailed information without becoming too technical, and uses numerous photos and diagrams. (New Society Publishers; $27.95)

The Homeowner's Guide to Energy Independence by Christine Woodside is a more basic guide that explains how alternative energy sources work. Woodside, an environmental reporter, makes the subject simple enough for even the most un-savvy reader to understand. (The Lyons Press; $14.95)