Affordable housing developers use myriad financing mechanisms to help meet local and national demands for low-to-moderate income, affordable housing developments. Since 1987, the Low-Income Housing Tax Credit (LIHTC) program has been the federal government’s primary vehicle for producing rental housing that is affordable to low-to-moderate income households. From 1995 to 2007, 1.4 million housing units in almost 19,000 projects were developed using this financing mechanism. In the past, solar projects have not been incorporated into LIHTC projects because of the unique challenges associated with integrating photovoltaic (PV) systems into existing financing models and the added cost to the new and existing developments.