There has been a lot of study into the development of solar panels that can be sandwiched in between window panels that protects your home form the environment as well as generate solar energy, stored in storage batteries and then converted to normal electrical power by an inverter for use around the house. These solar windows are still quite in their experimental stages but they are one of the best ways to have green technology that does away with the need for dedicated solar panels installed onto your roof. It also has the advantage of being opaque enough to allow just the right amount of light through while shielding the occupants from the harmful UV rays from the sun, turning it into electrical energy instead of just reflecting it out back into the environment.