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...

Topic Brief - February 07, 2019

This is the second in a series of technical briefs exploring emerging opportunities for energy efficiency in residential and commercial buildings. The ability to store energy and use it later is growing increasingly important to commercial buildings, especially as renewable energy and other...

Topic Brief - February 07, 2019

This is the first in a series of technical briefs exploring emerging opportunities for energy efficiency in residential and commercial buildings. Information and control technologies (ICT) save energy by monitoring and controlling building systems like lighting and HVAC. Integrated energy...

Research Report - January 16, 2019

ACEEE has reviewed exemplary customer-funded electric and natural gas utility programs every five years since 2003. For this edition of the report, we solicited nominations nationally and analyzed them in collaboration with an independent expert advisory panel. We ultimately selected 53 models...

Research Report - January 09, 2019

Energy efficiency programs built around strategic energy management (SEM) can help the workforces of large organizations identify energy-saving opportunities, implement improvements, and track reductions in usage. Programs can also offer another tool, energy management information systems (EMISs...

Topic Brief - January 07, 2019

Many local governments have adopted community-wide goals for increasing energy efficiency and reducing greenhouse gas emissions. This set of briefs examines three high-impact energy efficiency policies that can help cities meet these goals. The briefs cover (1) residential energy disclosure...

Topic Brief - January 07, 2019

While governors across the country are setting innovative energy policies, energy efficiency can help them go even farther toward meeting state goals. Saving energy creates jobs, develops the workforce, grows state economies, improves public health, promotes technological innovation, protects...

White Paper - January 02, 2019

Efforts to put a price on greenhouse gas emissions are increasing, with approaches including carbon taxes and cap-and-trade programs currently in effect in 15 states and provinces plus one city. Several other states and provinces are also considering putting a price on emissions. This paper...

Topic Brief - December 13, 2018

The value of utility demand-side energy efficiency programs extends beyond energy savings. Yet when states evaluate cost effectiveness, they undervalue or fail to include many nonenergy benefits that accrue to utilities, participants, and society. Some of the most significant omissions are the...

Regulatory Filing - December 12, 2018

These comments were submitted to the Arizona Corporation Commission, and relate to the Arizona Public Service Company's Self Direct Program. Docket E-01345A-17-0134.

Topic Brief - December 11, 2018

Performance incentive mechanisms (PIMs) can help make energy efficiency competitive with traditional utility infrastructure investments. This brief surveys current state approaches to PIMs and highlights two emerging trends in incentive design: multifactor incentives, and the growing use of...

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