The California Tax Credit Allocation Committee (TCAC) has since 2009 approved the use of the California Utility Allowance Calculator (CUAC) as a means for developers of new Low Income Housing Tax Credit (LIHTC) projects to determine tenants’ utility allowances. The approved procedures have required that when accounting for the input from photovoltaic (PV) systems, consultants are to use the monthly kWh estimates from the “CEC PV Calculator”, the software associated with the New Solar Homes Program (NSHP). At the request of the solar and affordable housing communities, TCAC has recently expanded the approved use of the CUAC to existing LIHTC projects that have added or are adding PV through the Multifamily Affordable Solar Home (MASH) program.