Ted and Kathy Carns live in the picturesque Laurel Highlands region of western Pennsylvania. They have most of the usual modern conveniences: fridge, freezer, washer, computer, cell phone, hot tub, vacuum, hair dryer, flat screen TV with surround sound…and they do it all without plugging into the power grid. Their house is wood-heated, their fuel is non-petrol; they grow their own food, put up their harvest, make their own wine, and drop fresh canned peaches into the solar-powered blender for...