Publications and Resources

Featured Publications

Fact Sheet - October 27, 2015

Lowering the amount of energy we waste reduces our need to burn coal and other fossil fuels to generate electricity. Those reductions in pollution mean big gains for health, as pollutants from fossil fuel combustion contribute to four of the leading causes of death in the United States: cancer,...

Research Report E1502 - June 30, 2015

In 1980, energy efficiency researchers formed the American Council for an Energy-Efficient Economy (ACEEE). As we turn 35 years old this year, we thought it would be useful to look at energy efficiency progress over the past 35 years and to also look at possible and recommended pathways for the...

Research Report U1502 - May 19, 2015

The second biennial ACEEE City Energy Efficiency Scorecard measures the progress of city policies and programs that save energy while benefiting the environment and promoting economic growth. We ranked 51 large US cities for their energy efficiency efforts across five policy...

Policy Brief - May 17, 2016

Twenty-five states are currently implementing long-term (3+ years), binding energy savings targets. States have taken a variety of approaches to setting targets, including passing legislation to enact formal energy efficiency resource standards, setting long-term energy savings targets through...

Research Report - May 10, 2016

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....

Research Report - May 04, 2016

Electric resistance heat, including electric furnaces and baseboard heaters can be inexpensive to install but often expensive to run. Homeowners with these systems can save substantial energy at a moderate cost by installing a heat pump at the time as they replace a central air conditioner. Even...

Research Report - May 04, 2016

This paper explores the question of whether we should be encouraging or discouraging natural gas use in residential space-heating and water-heating applications based on relative source energy use. Our analysis finds that electric heat pumps generally use less energy in warm states and have...

White Paper - April 27, 2016

This is the third in a series of papers intended to guide states as they embark on the path to Clean Power Plan (CPP) compliance. As they choose among many approaches to reducing pollution and complying with the CPP, states and localities can offer energy efficiency programs to low-income...

Research Report - April 20, 2016

Energy burden is the percentage of household income spent on home energy bills. In this report, ACEEE, along with the Energy Efficiency for All coalition, measures the energy burden of households in 48 of the largest American cities. We find that low-income, African-American, Latino, low-income...

White Paper - April 14, 2016

Several recent studies purport to show that particular energy efficiency programs and policies do not work or are too expensive. This short paper is written for people who are not evaluation experts and are trying to understand what conclusions they can take from these studies. We examine many...

Research Report - April 07, 2016

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,...

Fact Sheet - March 17, 2016

Looks at the results of three studies, all finding that including energy efficiency as part of state compliance plans will lower costs to ratepayers.  One study finds that an energy efficiency scenario reduced electric bills by 17%. Another study shows that in most states using energy efficiency...

Fact Sheet - March 17, 2016

Summarizes the results of studies by Lawrence Berkeley National Laboratory, ACEEE and the Environmental Protection Agency (EPA) on the cost of energy efficiency programs. Finds that energy efficiency is consistently a lowest cost option for meeting electric demand. One of the studies finds that...

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