Investment Tax Credit
The Emergency Economic Stabilization Act of 2008 extended a 30% Investment Tax Credit for the next 8 years for the purchase and installation of a solar photovoltaic systems. This tax credit significantly improves the payback and rate of return on any solar project. Taxpayers eligible for the ITC may opt for a renewable energy grant from the U.S. Treasury Department instead of the ITC.
Renewable Energy Grant
The American Recovery and Reinvestment Act of 2009 established a federal grant program where taxpayers may opt for a grant from the U.S. Treasury Department, instead of the ITC to pay for up to 30% of a solar or wind energy system.
Accelerated Depreciation
Solar electric and solar thermal systems are eligible for 5 years of the "Modified Accelerated Cost Recovery System (MACRS)". Using this depreciation schedule against a system with a 25+ year engineered life allows more of the depreciation to be taken sooner in the asset life which increases the overall financial return of the project.