Get quotes from several contractors before signing any solar energy installation company. Just as with any other construction product, it pays to shop around before you commit to a particular company. Check out their reviews online and their standing with the Better Business Bureau. A little research ahead of time can save you a big headache later.
If going green is a top priority for you, consider switching to solar energy. Solar energy is one of the most "green" technologies there are because the sun is used and is a renewable resource. Therefore, you can make a difference by implementing solar energy power.
Make your own DIY Solar Beeswax Melter from stuff around the garage.