On November 18, the Department of Energy released new best practices guidelines for residential Property-Assessed Clean Energy (PACE) mortgages, which provide homeowners a way to finance energy-efficient home improvements through property tax assessments. The new guidelines are intended to help state and local governments as they expand their PACE programs, and address the various problems that have emerged in the market since the PACE framework was first established in 2009. Among other things, the guidelines suggest that PACE programs confirm property owners’ ability to repay their assessments, and that state and local governments work with program administrators to establish underwriting guidelines and criteria for PACE programs.