This report provides a comprehensive review and analysis of home energy upgrade programs with proven track records, focusing on those with robustly verified savings and constituting good examples for replication. This meta-analysis describes program models and implementation strategies for direct install upgrades; heating, HVAC replacement and early retirement; and comprehensive, whole-home upgrades.

This case study discusses Efficiency Maine's successful statewide Residential Direct Install (RDI) program that was established in 2012 to help create demand for home energy assessments and upgrades.

This case study highlights a 20-unit apartment building that gained energy savings and comfort through Efficiency Maine.

This case study highlights the first project completed under Efficiency Maine's Multifamily Efficiency Program.

This video explains how Efficiency Maine helped contractors gain sales and business skills through training, which helped the program improve assessment-to-upgrade conversion rates and homeowner satisfaction.

This case study explains how Efficiency Maine provided contractor sales training to boost upgrade conversions.

This case study describes Efficiency Maine's Home Energy Savings Program (HESP), one of the few large residential energy efficiency programs that has attempted to navigate the transition from rebate-focused offerings to financing focused offerings that better align with its limited budget.

This Lawrence Berkeley National Laboratory Clean Energy Policy Brief describes how adding sales skills to contractors' existing technical expertise helps convert more assessments into comprehensive home energy upgrades. It profiles Efficiency Maine's contractor sales training and includes a list of resources.