Low-Income Weatherization Program for Multifamily (LIWP)

Overcomes barriers to serving energy efficiency to low-income communities

Program Website



Types of Programs

Renewable Energy
Building Electrification
Energy Efficiency



Building Type

  • Residential

AEA's Role

Program Implementation, and Technical Assistance Provider

Organization Admin

California Department of Community Services


California’s Low-Income Weatherization Program installs rooftop solar systems, solar hot water heating systems and energy efficiency measures for low-income households to reduce greenhouse gas emissions and save energy.

Launched in early 2016, the Low-Income Weatherization Program for Mutifamily Properties (LIWP-Multifamily) is already proving to have significant impact. Properties participating in LIWP Multifamily have reduced energy usage by an average of 40%.


Program funds have been investing in disadvantaged communities


Reduced GHG emissions through completed projects


Average resident savings on their energy bills


Program Benefits

LIWP-Multifamily is part of California Climate Investments, a statewide program that puts billions of Cap-and-Trade dollars to work reducing greenhouse gas emissions, strengthening the economy, and improving public heal and the environment. At least 35% of California Climate Investments are made in disadvantaged and low-income communities.

LIWP was great for this project. It facilitated deeper energy efficiency measures, created significant reductions in energy consumption and savings for both ownership and tenants. The LIWP technical assistance provided by AEA was both user-friendly and highly cost-effective. LIWP created a win-win for this affordable housing project. -Oscar Alvarado, Century Housing, Property Owner, Century Housing