The Government wants you to go Solar too
Included as part of the Emergency Economic Stabilization Act (EESA) of 2008, were $18 billion in incentives toward clean and renewable energy technologies and energy efficiency improvements. Now, these incentives are providing an Investment Tax Credit (ITC) for residential solar system purchasers of 30%* of your total system cost, with no upper limit. So you can get 30% back from your purchase of a new solar system.
*The percentage drops to 22% in 2021, and goes away, completely, in 2022.
This federal tax credit is a one-time credit, but may be carried forward, or back, if not completely usable in the system installation tax year. Rules regarding carrying forward and backward may very between residential and commercial tax filers. Consult with a tax professional to stay up to date on current regulations.