The federal government offers up to 30% of the solar system installation in ITC. ITC, or investment tax credit, means that the government will use your tax money to help you pay for the solar system. Simply, they will deduct a certain amount of your taxes, and use that amount to pay for your system.
The state of California offers about 34 different financing programs to help people who install a solar panels system in their houses. There are rebate programs, tax incentive programs and leasing programs that are offered for different cases. The programs are all made to fit most cases so the chances are that every person who wants to install a solar panel system will be accepted at least to one program.