Bay Area Regional Energy Network (BayREN) - Multifamily Residential Energy Efficiency Rebate Program

The BAMBE program provides rebates starting at $500 per unit—potentially over $5,000 per unit depending on your project scope and location—that on average cover 30-40% of total upgrade costs for eligible multifamily properties in the nine-county Bay Area. You'll receive no-cost technical assistance to identify which energy-efficient upgrades (like heat pumps, water heaters, insulation, and HVAC systems) make sense for your building, and rebates are paid after installation is complete. To get started, submit an Interest & Eligibility Form; a program representative will confirm your eligibility, assign you a technical assistant, and guide you through the full process from site visit through final rebate payment within 3–6 weeks of project completion.

BAMBE allows property owners to select their own licensed contractor and requires projects to install at least two measures achieving a minimum of 10% modeled energy savings. You must coordinate with the property owner's assigned technical assistant, who will reserve the rebate before equipment purchase or installation begins—projects already in progress or completed are ineligible. Rebates are significantly higher for properties installing electrification measures or located in program-designated burden zones; market-rate properties with 50 or more units are not eligible, while deed-restricted large properties are capped at $500 per unit and non-co-leveraged properties under 50 units have no cap.

BAMBE is funded by California IOU customers through the Public Purpose Program charge administered by the CPUC and serves multifamily properties (5+ units or 2–4 units with central systems) in nine Bay Area counties, excluding market-rate properties with 50+ units. The program targets properties in high-impact burden zones (air pollution, extreme heat, high housing costs) with enhanced rebates and provides no-cost technical assistance; rebates are reserved before installation and paid post-completion after site verification. Expected project timelines are 6–12 months from rebate reservation through installation, with rebate processing completing within 3–6 weeks of final verification.