Program Closed

  • The New Solar Homes Partnership (NSHP) program has ended and is no longer accepting applications for new reservations. 
  • Program activity statutorily ended on December 31, 2021.
  • This webpage will be archived after August 31, 2022. Please contact Renewable if you need assistance after this date.

The NSHP program was created as part of a statewide solar incentive program called the California Solar Initiative (CSI). Launched in January 2007, the NSHP program was the California Energy Commission’s (CEC) component of the CSI to provide incentives for the integration of solar energy systems in new home construction in investor-owned utility (IOU) territories. In accordance with NSHP program statutory requirements, the CEC stopped reserving funds for new reservations on June 1, 2018, and completed all incentive payment disbursal by December 31, 2021.

The information provided on this page has been migrated from

The reports provided in this section are produced as required by the California Public Utilities Commission Decision 16-06-006, “Decision Funding Authorizations and Related Measures for Continuation of the New Solar Homes Partnership Program,” approved June 9, 2016. The reports in this section provide an overview of the NSHP program’s approved and reserved sites within each respective time basis. The Energy Commission began generating reports on April 1, 2016.

Annual Reports

NSHP Quarterly Reports






The NSHP guidebooks detail the eligibility requirements, rules, and processes for reserving and claiming an incentive through the NSHP program. The following guidebooks are different versions released by the NSHP program in prior years.  

  • NSHP Resolution – Extension of Reservations: On December 9, 2020, the Energy Commission adopted a resolution to the NSHP Guidebook 11th Edition, to extend applicable expired reservations due to the COVID-19 pandemic. All NSHP reservations that expired from October 1, 2019, through December 31, 2020, have their reservation dates extended to March 31, 2021. This resolution is an addendum to the NSHP Guidebook 11th Edition.
  • NSHP Guidebook 11th Edition: Most current version of the NSHP Guidebook was effective as of October 11, 2017. This guidebook revision provides updates to the NSHP program areas pertaining to: Participation Deadlines, Incentive Levels, Incentive Calculation, Energy Efficiency and PV verification requirements, and change to Affordable Housing and Multifamily requirements.
  • NSHP Guidebook 10th Edition Revised: This version of the NSHP Guidebook was effective as of May 10, 2017. This guidebook revision provides updates to the NSHP program areas pertaining to: Incentive Levels, Incentive Calculation, Incentive Disclosure Requirements, Energy Efficiency and PV verification requirements, PV System Eligibility, Established Installer Process Updates, and Affordable Housing Requirements.

The Flexible Installation (FI) Calculator forecasts the performance of proposed rooftop PV systems applying to the NSHP. The production forecasts aid the calculation of incentive amounts to be received by applicants and must be used for NSHP projects subject to the 10th and 11th Editions of the NSHP Guidebook.

Download Links

Software Requirements

  • PC platform with MS Windows OS (Windows XP, Vista, Windows 7, Windows 10)
  • Microsoft Excel (2007, 2010, 2013, 2016)

Installation Instructions

  1. Run the MSI installer and follow the prompts from the install wizard
  2. When available above, download and run the MSI file with the most recent calculator. Uninstall the previous version of the FI Calculator if previously installed. 

Support Files


Toll-free in California: 844-454-2906
Outside California: 916-653-0237

News media
Media and Public Communications Office

Related Links


Go Solar California PV Campaign