Designing, Launching, and Managing Clean Energy Programs for Multifamily Housing

ICAST (International Center for Appropriate and Sustainable Technology) is a 501(c)(3) nonprofit with a mission to provide economic, environmental, and social benefits to underserved communities in a manner that builds local capacity. ICAST has a history of designing and managing utility-led, state, inter-state, and federal programs that leverage innovative green technologies to benefit low- and moderate-income communities since 2002.

Contact Us

(866) 590-4437 ◦

We offer some resources to help federal and state agencies working to expend their Inflation Reduction Act (IRA) and Bipartisan Infrastructure Law (BIL) funding on residential markets, especially income qualified residents. We show how and why multifamily-focused programs, specifically MF affordable housing, offer the best solution because they are easily scalable, cost-effective, and in alignment with the Justice40 goals.

500% growth since its launch.

Over 10,000 heat pump HVAC systems installed.

Case Study: Rocky Mountain Power (RMP) Multifamily DSM

Case Study: New Mexico Statewide Multifamily WAP

Braids funding and reduces spend.

Simple, streamlined, turnkey implementation.

DOE Home Energy Rebate Program Resources     

DOE Weatherization Assistance Program Resources

EPA Solar for All Resources

Additional Resources

Click to Download Summary Document

Click to Download Full Guidance Document

Click to Download Our DOE Rebate Request For Proposal

for Multifamily Program Implementer Template

Click to Download Our DOE Rebate Multifamily Specific Guidance

Click to Download Our Solar For All Request For

Proposal Template for Community Solar

Download A Case for Using Weatherization Assistance Program Funding in Multifamily Affordable Housing

Download Our Multifamily Weatherization Service Provider Request For Proposal Template

Click to Download Our Heat Pump  Guide

Click to Download Our Solar Resource Guide

We have been working with ICAST for almost a decade to address the energy efficiency and health and safety needs of multifamily affordable housing in the State of New Mexico. Their success in growing the MF program has been instrumental in securing additional funding from our local utilities for our Weatherization projects."

- Isidoro “Izzy” Hernandez, Executive Director & CEO, New Mexico Mortgage Finance Authority

"ICAST helped RMP design and launch a multifamily-focused energy efficiency program from the ground up. The program has since scaled 5X, and is one of the most effective programs in our portfolio."

- Bill Comeau, VP of Customer Experience and Innovation, PacifiCorp

Jeff Curry , Director of Development, JL Gray Company

For more information or assistance with designing and implementing a multifamily program, 

please call us at (866) 590-4437 or email

Multifamily Program Design Resources

Case Studies


Click to View a State Example of Multifamily HEAR RFP

Bridge Loan Financing

Visit TBL Fund to learn more on Bridge Loan financing options for MFAH grantees. 

Leveraging Funding Streams for Impactful Multifamily Affordable Housing Programs

Click to Download Document

"....what I’m most excited about is that states are thinking critically about how to use rebate funds to kickstart a whole-building efficiency program specifically designed for the unique characteristics of the multifamily sector. Many recognize this sector as a blind spot in their state’s current energy efficiency programming."

-Lauren Ross Ph.D, Senior Technical Advisor, Multifamily Building Energy Efficiency, Department of Energy

I want to thank ICAST for making the energy upgrades in our multifamily affordable housing properties a great success. Your team has been open and willing to work with us to meet our needs. JL Gray looks forward to working with the ICAST team on future projects.

Click to View State Example of SFA Request for 


Click to View a State Example of Multifamily HER RFP