You just have to be somebody who's interested in saving money or taking care of the planet.
Most solar homes are in rural areas, where the cost of using electricity is prohibitive.
But prices are coming down and technology is improving, so city dwellers are also getting interested. The sun warms houses by day, and reserve power heats them at night. In most homes, the necessary solar panels can be discreetly placed out of sight. And solar systems will even work in areas where there isn't perpetual sunshine. For example, Chicago architect Howard Alan's office is warmed by the sun's infrared rays, all year round.