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...

Research Report - July 24, 2018

National appliance efficiency standards drive energy, water, and utility bill savings. They are also major job creators. Existing standards could help consumers save $2 trillion on energy bills by 2030, money that will create new jobs when shifted from utilities to other goods and services. This...

Research Report - July 18, 2018

In this report, ACEEE and the Energy Efficiency for All coalition examine residential energy affordability in rural and small-town America and identify energy efficiency as an underutilized strategy that can help reduce energy burdens by as much as 25%. We analyze how rural energy burdens―the...

Research Report - July 10, 2018

To achieve the ambitious worldwide goal of reducing greenhouse gas emissions 80% or more by 2050, consumers and businesses will increasingly need to use heat pumps powered by low- or no-carbon electricity for space and water heating. But does electrification make sense for homeowners considering...

Research Report - June 25, 2018

The 2018 International Energy Efficiency Scorecard examines the efficiency policies and performance of 25 of the world’s top energy-consuming countries. We used 36 metrics to evaluate each country’s national commitment to saving energy as well as its efficiency policies and performance...

Research Report - June 14, 2018

Local governments across the United States are increasingly enacting policies and offering programs to drive energy savings, but the success of these activities is inextricably linked to a strong, capable energy efficiency workforce. To ensure that trained workers are available to capitalize on...

Fact Sheet - June 05, 2018

Highly efficient air conditioners and heat pumps use superior mechanical efficiency and advanced controls to save building energy. This equipment can provide energy efficiency program administrators with long-term energy savings. In these technical briefs, ACEEE provides an analysis of the...

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...

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