Off-the-grid homes areÿautonomous; they do not rely on municipalÿwater supply,ÿsewer,ÿnatural gas, electrical power grid, or similar utility services. A true off-grid house is able to operate completely independently of all traditionalÿpublic utilityÿservices. The idea has been recently popularized by certain celebrities includingÿEd Begley, Jr.[1]ÿwho stars inÿLiving with Ed[2]ÿtelevision show on theÿHome & Garden Televisionÿ(HGTV) network. ActressÿDaryl Hannahpromotes off-grid living and constructed her home in Colorado according to those principles, as does survival expert andÿDual Survivalÿco-starÿCody Lundin,[3]who lives in a self-designed,ÿpassive solarÿearth houseÿin the high-desert wilderness ofÿNorthern Arizona, collecting rainwater, composting waste, and paying nothing for utilities.[4][5]