The California Solar Initiative's RD&D Program has now concluded after operating since 2008 through 2016. All solicitations and research projects are now complete.



 Program overview + Research briefs       

 [25 MB ]
 Program overview  [13 MB ]

 Research briefs  (high resolution)                     

 [44 MB ]

For more information on the research projects and resulting reports please review the section below. All completed final reports are also available separately for review and download. 

FINAL REPORTS for completed projects along with individual research briefs can be found here.


CSI RD&D Program - Program Evaluation 



 Report Summary       

 [277 KB ]
 Final Report  [3 MB ]


 [4 MB ]


Funded Projects

This is a database of projects funded by the CSI RD&D. The project summaries are listed alphabetically below. You may also choose a subset of projects by clicking a keyword, or using the search function.

BeOpt Multifamily Modeling Capabilities for Zero Net Energy (ZNE) and Integrated Demand-Side Management (iDSM) in California

Current Highlights:
  • Project kick-off presentation 26 June 2014  PDF (985 KB)

  • Final Project Report: December 2015  PDF  (725 KB)

Project Information

Solicitation: Solicitation 5
Target Area: Cross-cutting Integration
Awardee: National Renewable Energy Laboratory

Davis Energy Group (DEG), Pacific Gas and Electric (PG&E), and Sacramento Municipal Utility District (SMUD)

CSI Funding: $99,000
Match Funding: $89,000
Start Date: May 2014
End Date: May 2015
Status: Complete

Contact Information

Principal Investigator Name: Eric Wilson
Principal Investigator Email: Eric.Wilson @ nrel.gov
Principal Investigator Phone: 303-275-4676
Grant Manager Name: Ann Peterson
Grant Manager Email: ann.peterson @ itron.com
Grant Manager Phone: 509-891-3185

Project Summary

This project builds on and leverages NREL's Solicitation #1 project titled "BEopt-CA (EX): A Tool for Optimal Integration of Energy Efficiency, Demand Response, Energy Storage and PV for California Homes." The BEopt software tool finds the least cost combination of energy efficiency and solar PV, providing support to integrated demand side management (iDSM) and Zero Net Energy (ZNE) for residential buildings in California. For this project, the NREL team will extend the tool and develop multifamily (including duplexes, triplexes, townhouses, flats and low-ride apartment buildings) residential modeling capabilities in BEopt for use in California. Specific multifamily modeling additions include developing multifamily-specific operating conditions, adiabatic surfaces, enhancements to input screens (geometry, option and site screens), enhancements to output screens (aggregate results), utilize multithreading (parallel simulations and use of multiprocessors for faster simulations) and multifamily HVAC and DHW (including solar) systems. Throughout the project, team members will test the software framework to ensure that the BEopt multifamily enhancements are accurate and reliable.

Deliverables and Documents


  • Project kick-off presentation 26 June 2014  PDF  (985 KB)

  • Final Project Report: BEopt Multifamily Modeling Capabilities for ZNE and iDSM in California. Davis Energy Group & NREL. December 2015. PDF (725)

Project Activities

Project Links

Tags: Energy Efficiency , Residential , Solar Technology , Tool