Multifamily Affordable Solar Housing (MASH)
NOTE: Current funding for the MASH program has been fully subscribed. Please contact the MASH Program Administrators for current information on the status of the program waitlist in each utility service territory (San Diego/CSE, PG&E and SCE).
The MASH Program is overseen by the California Public Utilities Commission and provides incentives to qualifying affordable housing within the service territories of Pacific Gas & Electric Company (PG&E), Southern California Edison Company (SCE), and San Diego Gas & Electric (SDG&E).
MASH provides fixed, up front, capacity-based incentives for qualifying solar energy systems. The amount of the incentive depends on which Track (1C or 1D) the applicant is eligible for.
M A S H Incentive Rates ($/Watt) | |
Track 1C - PV System Offsetting one of the following:
|
$1.10 |
Track 1D - PV System Offsetting:
|
$1.80 |
Documents for the Multifamily Affordable Solar Housing (MASH) Program

Multifamily Affordable Solar Housing Handbook
California Public Utilities Commission,
July 2015, posted 7/31/15
(Acrobat PDF file, 146 pages, 1.9 MB).
MASH Application Forms
The MASH online application portal is PowerClerk. In order to apply for MASH via PowerClerk, applicants will be required to upload certain forms in support of their application. The forms required depend on the specification of the project. For information on what forms are required and how they may be submitted, visit the MASH Application Help Matrix page.
- Authorization to Receive Customer Information (CSE Only)
- Electrical System Sizing Documentation (XLS File)
- Cover Sheet for PU Code 2852 Documentation
- Affidavit Ensuring 50% Tenant Economic Benefit
- Job Training Affidavit
- Field Verification Certification Form
- High Cost Justification and Acknowledgement Form
- ESA Referral List (CSV File)
Program Resources
Learn how to apply in your territory: San Diego/CSE, PG&E and SCE.
Complete your application using CSI PowerClerk, our online application management tool (login required.)
Regulatory information, including service list and proceeding information is available on the California Public Utilities Commission's MASH Homepage.
CSI EPBB Design Factor Calculator Quick Start Guide, Revision 3, CSI Program Administrators. (PDF file, 8 pages, 76 KB)
PowerClerk Glossary, CSI Program Administrators, (PDF file, 8 pages, 87 KB)
PowerClerk Status Information, CSI Program Administrators (PDF file, 5 pages, 421 KB
Learn more about the California Solar Initiative (CSI) and CSI Documents and Supporting Information.