Grainger San Francisco Distribution Center Photovoltaic System

Patterson, California


  • Grainger

    Project Size

  • 820,000 SF


W. W. Grainger, a leading supplier of maintenance, repair, and operating products, made a commitment to invest in sustainable infrastructure and reduce energy consumption, increase efficiency, and benefit from tax rebates. The company wanted to install a solar photovoltaic system at their San Francisco Distribution Center to help obtain sustainability goals. 

Existing equipment and utilities posed an obstacle in the installation of any rooftop mounted panels, which required support with a series of inverters, switchboards, meters, and monitoring systems. 


To meet Grainger’s objectives and overcome project hurdles, we offered consulting and owner advisory services while developing technical requirements for the project. 

Our team provided performance specifications and drawings for the photovoltaic and electrical systems and gave detailed on-site verification for two sets of existing photovoltaic system connection points and main electrical switchboards. We also evaluated the existing connection points to determine if the electrical infrastructure were adequately placed.

Pre-construction consulting services facilitated competitive bidding. We evaluated each vendor option, conducted an on-site pre-bid meeting and reviewed vendor proposals.


Our team was present to support Grainger throughout construction, conducting bi-weekly on-site review meetings and appraised the entire installation upon completion. We continued to support the project by offering a complete review of the photovoltaic system to report any potential issues. 

The solar-operated system now powers more than 50% of the distribution center, which significantly offsets CO2 emissions and reduces energy costs.