Low Income Solar Programs


After the passage of SB 1, which set forth specific California Solar Initiative (CSI) program requirements, and AB 2723, which codified a requirement that not less than 10 percent of overall CSI funds be used for installations of solar systems on low-income residential housing, the California Public Utilities Commission (CPUC) earmarked 10 percent of its $2.2 billion budget for solar programs for low-income housing. The CPUC chose to create individual solar programs for single-family low-income homes and multifamily low-income buildings.

Single-Family Affordable Solar Housing Program

On November 16, 2007, the CPUC issued Decision 07-01-045, creating a $108 million Single-Family Low Income Incentive Program within the CSI. The Single-Family Affordable Solar Housing (SASH) Program will provide higher incentives to offset the project costs of installing solar on low income single family homes in California. GRID Alternatives will be the statewide SASH Program Manager. At this time, the SASH program is under development. For more information, please contact GRID Alternatives at 510-652-4730, or visit their website.

Multifamily Affordable Solar Housing (MASH) Program

The Multifamily Affordable Solar Housing (MASH) program provides higher incentives to offset the project costs of installing solar on multifamily affordable housing buildings in California. The goal of the MASH program is to incorporate high levels of energy efficiency and high performing solar systems to help enhance the overall quality of affordable housing.

MASH Track 1:

Provides fixed rebates based on the size and expected performance of the system installed. Incentives are $1.90 per watt to offset common area load and $2.80 per watt to offset tenant area load.

Status: New applications are being Waitlisted (last updated May 8, 2013)

The MASH program at Pacific Gas and Electric Company (PG&E) is currently accepting applications onto a Waitlist. The program currently has funds to be distributed through incentives, however the budget for the program is predicted to be exhausted within the second quarter of 2013. Projects will be placed on the Waitlist on a first-come, first-served basis. Please note, that waitlisted projects are not guaranteed an incentive. Once review has begun, applicants will receive an email that their application has been moved from Wait List to Reservation Request Review and a separate email with an Application Fee Invoice stating that the applicant has 30 days from the review date to send in the application fee. Once PG&E completes reserving the remaining incentive budget with applications from the Waitlist, we will notify all other waitlist participants that incentive funds are unavailable at this time.

To track the available MASH incentive budget, please view the MASH Budget Report available on the California Solar Statistics website.

MASH Track 2:

Status: Closed

On July 20, 2011 the CPUC issued Decision 11-07-031, which affected the MASH program in a number of ways. One of the changes shifted all remaining Track 2 funds to Track 1.

History of MASH Modifications

Starting May 14, 2012 at 9:00 AM PST, the changes below to PG&E’s MASH Track 1 program took effect:

  • All new MASH applications must be submitted through PowerClerk.
  • All supporting documents will be scanned as PDFs and submitted as attachments.

On July 20, 2011 the California Public Utilities Commission issued Decision 11-07-031 which has multiple effects on the MASH program. Among these changes are the following:

  • All remaining Track 2 funds are shifted to Track 1
  • New Reservation Requests placed under review on and after July 14, 2011 will receive incentive levels of $1.90/watt for Common Area Load (Track 1A) and $2.80/watt for Tenant Load (Track 1B)
  • The MASH program will adopt the General Market Application Fee Guidelines for systems =10 kW
  • The two-year occupancy requirement for MASH is removed, but projects may not receive incentives from both NSHP and MASH
  • Remove 20/80 percent split of Track 1A and 1B requirement of Track 1 budget

Virtual Net Energy Metering

PG&E customers participating in either the Multifamily Affordable Solar Housing (MASH) or New Solar Homes Partnership (NSHP) solar incentive programs are eligible for the Virtual Net Energy Metering tariff, NEMVMASH, which allows participants to allocate credits from one solar system across multiple accounts in an affordable housing complex. The tariff is available in PG&E’s electric tariff book, and the application is available on PG&E’s interconnection website.

How to Apply

All new applications must be submitted through PowerClerk, the online database which provides Applicants the ability to electronically submit supporting documents by scanning and attaching PDFs. MASH handbook, applications and fact sheets can be found on the handbook & forms page.

Additional Energy Efficiency Programs

Contact Us


Solar Customer Service Center 1-877-743-4112

Mailing Address – Application Fee Submittals Only
PG&E Solar and Customer Generation - MASH
PO Box 7433
San Francisco, CA 94120

Street Address (for overnight deliveries) – Application Fee Submittals Only
PG&E Solar and Customer Generation - MASH
245 Market St., MC N7R
San Francisco, CA 94105-1797