Commercial Solar

What does it mean to be a 34-year-old construction company?

PetersenDean’s reputation for superior workmanship and materials has been built over the years. With over 100,000 solar systems and 1 million roofs installed, we are the largest privately held roofing & solar contractor in the U.S. As a solar & storage contractor with a foundation in construction, we not only provide the front-end analytics needed to design a solution but the back-end implementation expertise required to deliver it safely and efficiently. Our commitment to “building it right the first time, every time,” has set the standard for roofing, solar, and energy storage projects nationwide.

Increase operating income by reducing your utilities expense

Qualifies for 30% Federal Tax Credit and Accelerated Depreciation (MACRS)*

Financing options available to fit your needs/goals

Reduce your carbon footprint and promote sustainability within your business

*Assumes ‘for profit’ ownership


Listen to what our customers are saying


  • Livermore Software
    Technology Corp
    Livermore Software Technology Corp. interview with Russel Sims

  • PD Quakes videoSAN JOSE, CA – The San Jose Earthquakes announced today a founding partnership with Northern California-based.

  • Spath Aquatic CenterFORT BRAGG, CA – Fort Bragg’s C.V. Starr / Spath Aquatic Center

Project Profiles


  • Sunnyvale Fire Dept.
    29.8 kW – Sunnyvale, CA

  • Kittyhawk Warehouse
    46.1 kW – Windsor, CA

  • Fort Bragg Unified
    27.7 kW – Forth Bragg, CA

  • Earl Baum Center for the Blind
    26.9 kW – Santa Rosa, CA

  • San Jose Earthquakes Stadium
    225 kW – San Jose, CA

  • Livermore Software Technology Corp.
    90 kW – Livermore, CA