Tapping Into the Sun
Most homes with solar systems remain connected to the power grid. When the system produces more electricity than the home needs, the excess is fed into the grid and the customer is credited for that energy. When the customer needs more energy than the solar system produces, power is drawn from the grid.
Solar-power systems not only reduce electricity bills, but also help eliminate air pollution. They also make a home power system more efficient, because electricity is generated right where it's used, rather than having to travel from remote power plants.