Research & Insights

Green Rewards improvements impact the bottom line

Learn how Fannie Mae Borrowers reduced energy and water costs at multifamily properties with Green Rewards.

Leveraging federal, state, and local energy efficiency incentives

Did you know that you can pair Green Rewards with other financial incentive programs? Learn more about how to utilize utility, State Energy Office, and federal incentives, in conjunction with Green Rewards, to leverage greater benefits and help meet building energy performance standards.

Decarbonization and What it Means for Multifamily Properties

ENERGY STAR® Score and EPA Water Score for Multifamily

To help multifamily properties reduce energy and water costs, Fannie Mae Multifamily partnered with the U.S. Environmental Protection Agency to create the 1 to 100 ENERGY STAR Score for Multifamily and the 1 to 100 EPA Water Score for Multifamily. In 2023, Fannie Mae partnered with industry leaders on the Multifamily Energy and Water survey, a national survey effort to collect and analyze energy and water consumption and costs in Multifamily properties in the U.S. The data collected will be used to update the calculations for scoring multifamily properties.  

Fannie Mae studies electrification and decarbonization in multifamily housing

In 2022, Fannie Mae conducted an analysis of the energy consumption and property characteristics of more than 3,000 Green Mortgage Loan properties. Using these data insights and additional research, the Fannie Mae Multifamily Electrification and Decarbonization Roadmap was developed. This summary document highlights the steps that our Green Financing Business can take to decarbonize America’s multifamily building stock. 

Evaluating energy and water efficiency performance in multifamily housing

Together, Measurement and Verification data may enable Fannie Mae to gain a fuller understanding of the impact of green financing and to identify ways that we may be able to improve the positive impact of our program. This white paper provides a review of Fannie Mae’s Green Mortgage Loan program and its approach to Green Measurement and Verification. This paper considers the current opportunities and limitations of data collected for the Fannie Mae Green Mortgage Loan portfolio, many of which may be applicable for multifamily utility efficiency programs more broadly.

Analysis of certifications for energy-efficient and healthy multifamily buildings

To drive market transformation, Fannie Mae, Integral Group, and Elementa Engineering conducted an analysis of all certifications for green or healthy multifamily buildings available in the United States. Learn more about this work in the report published in the conference proceedings for the 2020 American Council for an Energy-Efficient Economy’s Summer Study in Buildings.