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  • Energy Efficiency Policy
  • Apr 1, 2015

    Information for Lenders

    In October of 2013 the American Council for an Energy Efficient Economy (ACEEE) and Energi Insurance Services, with support from the National Renewable Energy Laboratory (NREL), Argonne National La…

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    In October of 2013 the American Council for an Energy Efficient Economy (ACEEE) and Energi Insurance Services, with support from the National Renewable Energy Laboratory (NREL), Argonne National Laboratory, and the US Department of Energy (DOE), brought together a group of stakeholders to discuss issues facing small- to mid-size lenders in the energy efficiency space. This gathering was called the Small Lender Energy Efficiency Convening and from this SLEEC was born.

    This page is intended to serve as a repository for technical assistance and other relevant information for lenders interested in energy efficiency. Below are links to research reports, blog posts, fact sheets, and webpages, from ACEEE and others brought together in one place to aid and inform those interested the energy efficiency finance marketplace.

    For more information on SLEEC, please reach out to the Economics and Finance Policy Team. Also join our online community on LinkedIn.

    Intro to SLEEC

    Overview Energy Efficiency Finance

    Valuation and Appraisal

    Secondary Markets

    Financing Options

    On-bill

    PACE

    Energy Service Agreements (ESA) and Managed Energy Service Agreements (MESA)

    For information on Energy Service Agreements and Managed Energy Service Agreements see “Energy Efficiency Paying the Way” p.23, and “Show me the Money” p.13

    Energy Efficiency Leasing

    Specific Markets

    Multifamily

    Single-Family Residential

    For information on financing energy efficiency in single family residential homes see “Energy Efficiency Finance 101” and “ Innovations and Opportunities in Energy Efficiency Finance

    Commercial

    Related Resources

    Bridging the Equity Gap for Utility Energy Efficiency Programs
    equity
  • Research Report
  • Affordability and Energy Equity
  • Energy Efficiency Policy
  • Homes and Buildings
  • Utilities and the Power Sector
  • Bridging the Equity Gap for Utility Energy Efficiency Programs

    Note: This report was updated on July 31, 2026, to reflect data from Commonwealth Edison received after publication that showed additional spending on low-income efficiency programs. Resultant updates to the analysis yielded an increase in the overall average spending (of all utilities in the sample) on low-income programs in 2024. This increased the average share of budgets dedicated to programming for low-income populations to 14.1% and reduced the average “equity gap” to 13.8%; each change was less than 1 percentage point. ComEd-specific results were updated throughout. Additionally, the per-household savings data for Baltimore Gas and Electric was corrected, and that resulted in BGE no longer being listed in the top quartile of utilities in that category.

    Jul 31, 2026

    Efficiency Saves: Cutting Energy Waste Can Save $31,000 per Household
    An Indian couple sitting on a couch looking at energy bills.
  • Research Report
  • Energy Efficiency Policy
  • Homes and Buildings
  • Efficiency Saves: Cutting Energy Waste Can Save $31,000 per Household

    The United States faces interlocking energy challenges: rising home energy bills and gasoline prices; new demand for electricity from data centers and other loads; high greenhouse gas emissions from burning fossil fuels. 

    Now, a new era of energy efficiency progress in our buildings, transportation, and industry is needed to meet this moment. This wide-ranging study finds a massive opportunity.

    Jul 27, 2026

    Maximizing State Transportation Investments: How Redirecting Spending from Highway Expansion to Public Transit Supports Economies and Communities
  • Research Report
  • Energy Efficiency Policy
  • Transportation
  • Maximizing State Transportation Investments: How Redirecting Spending from Highway Expansion to Public Transit Supports Economies and Communities

    Costs to deliver transportation projects have risen drastically in recent years. To avoid wasteful spending, each new dollar invested in transportation infrastructur…

    May 13, 2026

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