Publications and Resources

Featured Publications

Research Report U1907 - September 18, 2019

Energy efficiency can slash US energy use and greenhouse gas emissions by about 50% by 2050, getting us halfway to our national climate goals. We can achieve almost all these savings, worth more than $700 billion in 2050, by dramatically scaling up government policies and programs. This report...

Research Report U1904 - July 24, 2019

The City Clean Energy Scorecard measures the progress of city policies and programs that save energy, promote renewable energy, and reduce greenhouse gas emissions. It also focuses on efforts to embed equity in policymaking. We ranked 75 large US cities for their energy efficiency and...

Research Report U1902 - February 20, 2019

The lifetime of energy efficiency programs and measures ranges from a few months to several decades. Nevertheless, most energy efficiency policies are designed around the first year of savings. This report describes recent policy changes in some states and Canadian provinces to measure the value...

Testimony - May 31, 2018

The comments refer to a May 18 Science Advisory Board Work Group memo. 

Research Report - May 02, 2018

A growing number of housing providers, utility-sector program administrators, and investors are working to combine energy efficiency improvements with solar systems in affordable multifamily buildings. Pairing energy efficiency with rooftop solar systems can reduce energy costs for these...

White Paper - April 25, 2018

In this paper we examine how decision makers can more precisely assess the costs of disruptive weather events and the value of resilient distributed energy systems such as combined heat and power (CHP). CHP makes up a small percentage of the energy infrastructure in the United States despite its...

Research Report - April 16, 2018

Homeowners and renters are increasingly using technologies like smart thermostats and smart lighting, appliances, and outlets to enhance comfort and convenience. But these are not the only benefits. Smart technologies can also optimize a home’s energy use, reducing waste and lowering utility...

Research Report - April 16, 2018

State air regulators can rely on energy efficiency to help meet specific pollutant reductions required under the EPA’s National Ambient Air Quality Standards (NAAQS). However many states are not incorporating this compliance strategy into their state implementation plans (SIPs). This report...

Research Report - April 10, 2018

Wholesale energy prices have historically been volatile, and this can impose significant costs on electricity buyers and sellers. This report examines these costs in electricity markets and demonstrates the value of energy efficiency as a low-risk supply option. It estimates the value at risk in...

Regulatory Filing - April 09, 2018

Comments delivered to the Virginia Department of Environmental Quality RE: Rev. C17, 9VAC5 Chapter 140. 

Research Report - March 26, 2018

ACEEE’s Health and Energy Linked (HELP) Awards recognize programs that simultaneously improve human health and save energy. This report highlights the six exemplary programs chosen by a panel of expert advisors to receive the first awards. Case studies describe funding, communities served, and...

Research Report - February 28, 2018

Many state regulatory commissions are engaged in proceedings to modernize the electric grid. These proceedings include a heavy focus on updating system planning processes to reflect growth in distributed generation and other technological advances. Our report examines current distribution system...

Regulatory Filing - February 27, 2018

The comments submission references the docket EPA-HQ-OAR-2017-0545, and urges EPA to consider energy efficiency in state guidelines for greenhouse gas emissions from existing electric utility generating units. Attached are seven ACEEE documents demonstrating the value of energy efficiency in the...

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