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.

Energy efficiency savings have grown substantially in the past ten years, and national leaders in program administration have emerged as savings levels have increased. This report reviews annual program performance for 14 leading energy efficiency program administrators, with a focus on costs, electricity savings, cost effectiveness, and portfolio design.

This paper explores ways in which program administrators are using social norms to spur behavior change and, as a result, curb energy use. In recent years, home energy reports (HER) programs have applied the concept of social norms to the energy efficiency context. These feedback programs inform customers of how their energy consumption compares to their neighbors' and provide other information about their usage, with the goal of enticing customers to change their energy use behavior to improve their relative neighborhood ranking.

This fact sheet provides promising approaches for Better Buildings programs seeking to accelerate workforce development to support building energy upgrades. These approaches are organized by estimated level of effort and include rough estimates of cost ranges for implementation.

This document constitutes the final report for the 2009-2010 process evaluation of the Low Income Energy Efficiency (LIEE) program operated by the four investor-owned utilities (IOU) of California for the California Public Utilities Commission (CPUC). The IOUs include: Pacific Gas and Electric Company (PG&E), Southern California Edison (SCE), Southern California Gas (SCG), and San Diego Gas and Electric (SDG&E). Although the program is now referred to as Energy Savings Assistance Program (ESAP), this report will employ the nomenclature used for the 2009-2010 program cycle.

This report presents the findings of Phase 2 of the California Public Utilities Commission Low Income Needs Assessment Study. The results of the needs assessment suggest that, over time, the programs have effectively targeted and provided services to low-income households that have the greatest need.

This paper presents the results of a comprehensive study of the energy-related needs of California’s low-income population. This study was commissioned to direct future policy regarding the various low-income energy programs offered in the state. These programs include the California Alternate Rate for Energy (CARE) Program, which provides a rate discount to qualified low-income customers, and the Low-Income Energy Efficiency (LIEE) Program, which installs weatherization and energy efficiency measures in qualified dwellings at no charge.