Go Green with Solar Energy
It's somewhat of a misnomer to say that solar energy is free. Utilizing a photovoltaic (PV) solar system to green up your home and reduce electric bills requires a sizable up-front investment before you can start harvesting the sun's rays. And in most cases, the system will reduce rather than eliminate your electric bills, as you will need to stay connected to the grid to ensure you will have power at night and during periods of overcast weather.
PV Solar Panels: No Longer "Alien" Technology
Don't Go Dark at Night