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 report identifies opportunities for Connecticut's Home Energy Solutions program (HES) to increase savings related to air sealing, duct sealing, and insulation.

This report presents the results of the evaluation of National Grid Rhode Island's 2014 EnergyWise program. EnergyWise is designed to achieve energy savings in single family (1-4 unit) residential homes by directly installing efficient lightbulbs and water heating measures, providing devices for homeowner use, and offering building shell retrofit rebates.

This report provides the electric and natural gas impacts from the suite of National Grid Multifamily Retrofit Programs as determined through a billing analysis.

The multifamily sector can be hard to reach when it comes to energy efficiency programs. Besides being diverse and complex, the sector presents a unique set of challenges to efficiency investments. The result is that multifamily customers are often underserved by energy efficiency programs. Drawing on data requests and interviews with program administrators, this report summarizes the challenges to program participation and identifies best practices that programs can use to reach and retain large numbers of multifamily participants.

Home energy management systems (HEMS) continue to present a unique opportunity and challenge. While energy savings have been documented for many HEMS, some of the most promising opportunities from these devices and systems can be found in the internet of things (IoT) and smart home technologies. This report presents market updates, a regional goal, and strategies to drive market transformation and achieve the many benefits from HEMS and the Smart Energy Home.