Webbing--solar cont.

I found a website gpsgenpartners.com (Green Power Switch-GPS).  GPS offers a $1,000 start up incentive for new solar power homes.  They also buy excess power for .15 cents kWh.  Not bad, but I am really having a hard time understanding how all this works.  I can't get too involved with solar decisions now because the prices, and incentives are changing so much.  I do know that utility bills are going up every month and I want a home that is going to be as cheap as possible to operate.