Find out how the program is fostering solar energy systems

Learn how the Multifamily Affordable Solar Housing (MASH) Program can provide affordable solar housing to your family. You’re eligible for the program if you’re a customer or if you’re on our waitlist. We are no longer accepting new applications.

What is MASH?

MASH is a program that provides business solutions to offset the costs of installing new solar energy systems on multifamily affordable housing in California. The program began in similar form on November 16, 2007, when the California Public Utilities Commission (CPUC) set aside $108 million for low-income families in multifamily dwellings. MASH received $54 million more in 2015 and reopened the program to those waitlisted on August 3, 2015.

MASH aims to improve the quality of housing, decrease energy use and lower costs for tenants. It also urges tenants to use high-performance solar systems that help protect California’s environment.

 

Understand who benefits from the program

MASH applies to multifamily affordable housing buildings with new solar-panel energy systems. The owner of the complex typically applies for a business solution. MASH helps to offset the cost of installing new solar energy systems for common areas, and to reduce monthly energy costs for tenants.

 

Program details

The program provides post-installation, fixed rebates based on the size and output of your solar system. Your contractor can help you decide on the system’s size. The contractor can help you allocate the percentages of system-generated power between common areas and tenant areas to boost benefits.

The PG&E Virtual Net Energy Metering (NEMVMASH) tariff allows all tenants in an affordable housing complex to benefit from energy generation credits gained from the building’s solar system. Learn more about the program.

Download ELECTRIC SCHEDULE NEMVMASH (PDF, 653 KB)

Your contractor can explain how the portion allocated to the common area takes into account past electricity usage. The tenant percentages are based on the square footage of the residential units. If the building meter setup qualifies, tenants in buildings participating in MASH can get this tariff. The existing rate schedule doesn’t change.

Various factors affect which money-back rate you can receive. The applicant must allocate credits to tenants using virtual net energy metering, and guarantee that at least 50 percent of the economic benefit goes to the tenants.

The following table states the requirements for the two incentive amounts.

Adopted MASH incentive tracks

Incentive AmountEligibility Requirements
IC: PV system Offsetting Common Area Load, Non-VNM Tenant Load, or VNM Tenant Load with <50% Benefit

$1.10/watt

  • Provide job training opportunity to more than one trainee, with one additional trainee for each 10KW up to 50KW
  • Conduct onsite walkthrough energy audit at ASHRAE level I or higher, or enroll in a utility, REN, CCA or federally provided whole-building multifamily energy efficiency program.
  • Portion of system allocated to offsetting one of the following:
    • Common area load
    • Non-VNM area load
    • VNM tenant load where tenant receives less than 50% of economic benefit of all allocated generation.
1D: PV System Offsetting VNM Tenant Load with ≥50% Tenant Benefit

$1.80/watt

  • Provide job training opportunity to more than one trainee, with one additional trainee for each 10KW up to 50KW
  • Conduct onsite walkthrough energy audit at ASHRAE level level I or higher, or enroll in a utility, REN, CCA or federally provided whole-building multifamily energy efficiency program.
  • Portion of system allocated to offsetting:
    • VNM tenant load where tenant receives at least 50% of economic benefit of all allocated generation.

Apply for the program

PLEASE NOTE: The MASH program is currently closed to new applications.

 

New funding has been allotted to the MASH program by Assembly Bill 217. Funds are expected to be exhausted by the projects currently on the waitlist. If the projects on the waitlist do not exhaust the current funding, the program will be opened up to new applications at that time. When new applications are accepted, your contractor will help with the entire application process from materials to applications to interconnection. 


Applications must be submitted through an online database. Visit PowerClerk - CSI Application Portal.