Installing solar panels could be one of the best investments you will ever make to improve the value of your home, while helping the environment. This pages gives you the overview of tax incentives and solar grants.

Incentives - DSIRE is a comprehensive source of information on state, local, utility, and federal tax incentives that promotes renewable energy and energy efficiency. Check out their website to find out what financial incentives are available in your area.

If your system produces more energy than you use, then check out the Net Metering option. Net metering enables customers to use their own generation to offset their consumption over a billing period by allowing their electric meters to turn backwards when they generate electricity in excess of the their demand.

Net Metering Rules for Renewable Energy by State also by DSIRE.

If you are considering installing a renewable energy technology in your home, you may be eligible for a GRANT. To be eligible for a solar grant you will need to use a certified installer and products.

Read about low carbon buildings program from BERR (Department for Business Enterprise & Regulatory Reform).

Energy Saving Trust has a very detailed information about this topic.  It also tells you how to sell your own energy. For example Feed in Tariff scheme guarantees a minimum payment for all electricity generated by the system, plus as a separate payment for the electricity exported to grid. To see how purchase price and loan can impact on payback times, follow the cashback calculator link on the Energy Saving Trust website. It is a must read website in UK!