Skip to Content
ACEEE | American Council for an Energy-Efficient Economy
Issues
Issues
ACEEE’s work spans six core focus areas and a range of related topics. Explore the issues shaping energy efficiency today.
See all
Focus Areas
Our main areas of research
Affordability and Energy Equity
Behavior and Health
Energy Efficiency Policy
Homes and Buildings
Industry and Manufacturing
Transportation
Utilities and the Power Sector
Featured Research Topics
Specific themes and technologies
Appliances and Equipment
Building Policies and Codes
Data Centers
Decarbonization
Industrial Heat
Low-Income Energy Efficiency Programs
Homes and Multifamily Buildings
Efficiency, Flexibility, and Rate Design Programs
Research & Publications
Research & Publications
Research that drives efficiency forward.
See all resources
Research Reports
Research Reports
Briefs
Briefs
Toolkits
Toolkits
Fact Sheets
Fact Sheets
Public Filings & Testimony
Public Filings & Testimony
Scorecards
Scorecards
Events
About
What Is Energy Efficiency?
About
People
Careers
Our Impact
Donate
Join
Search
Menu
News & Insights
Summer Study Proceedings Papers
Issues
Toggle
Focus Areas
Affordability and Energy Equity
Behavior and Health
Energy Efficiency Policy
Homes and Buildings
Industry and Manufacturing
Transportation
Utilities and the Power Sector
Featured Research Topics
Appliances and Equipment
Building Policies and Codes
Data Centers
Decarbonization
Industrial Heat
Low-Income Energy Efficiency Programs
Homes and Multifamily Buildings
Efficiency, Flexibility, and Rate Design Programs
See all
Research & Publications
Toggle
Research Reports
Briefs
Toolkits
Fact Sheets
Public Filings & Testimony
Scorecards
Events
About
Toggle
What Is Energy Efficiency?
About
People
Careers
Our Impact
Donate
Join
News & Insights
Summer Study Proceedings Papers
Search
Search
Summer Study Proceeding Paper
Buildings
2026
This Must Be the Place: Plug-In 120 V Heat Pump Water Heater Retrofits and Associated Costs
Download PDF
Close
Share
X
Facebook
LinkedIn
Email
Reddit
Copy Link