On June 30, Treasury released an additional guidance document outlining the process used to evaluate the amount of a renewable energy project's basis that is eligible for a Cash Grant under Section 1603 of the American Recovery and Reinvestment Act of 2009. This newly-published guidance document is linked here for your convenient review. The guidance is generally consistent with observed practice and general principles of tax law applied to the issue of Cash Grant-eligible basis. Thus, although the guidance applies specifically to solar PV properties, at least the methods it describes for determining tax basis and appraised fair market value, and the principles underlying those methods, apply to all types of properties eligible for the Cash Grant.