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California Solar

California Solar

Grass Valley, CA
Year Founded: 2000
cal-solar.coop
Total Kilowatts Installed Since Founded: 10,248

California Solar is worker-owned and a Certified B Corp. They are the only solar co-op in the state.

2022
Rank #330  ·  2022 List  ·  2021 Installation Data
Residential · Installer
1,419
2021 Installation Data
View 2021 Installation Data by State
California 1,419
View 2022 contractor list →
2021
Rank #356  ·  2021 List  ·  2020 Installation Data
Residential · Rooftop Contractor
751
2020 Installation Data
View 2020 Installation Data by State
California 751
View 2021 contractor list →
2020
Rank #290  ·  2020 List  ·  2019 Installation Data
Residential · Rooftop Contractor · Storage: 165 kWh
1,375
2019 Installation Data
View 2019 Installation Data by State
California 1,375
View 2020 contractor list →
2019
Rank #313  ·  2019 List  ·  2018 Installation Data
Residential · Rooftop Contractor
914
2018 Installation Data
View 2018 Installation Data by State
California 914
View 2019 contractor list →
2018
Rank #336  ·  2018 List  ·  2017 Installation Data
Residential · EPC
708
2017 Installation Data
2017
Rank #340  ·  2017 List  ·  2016 Installation Data
Residential · Rooftop Contractor
1
2016 Installation Data
2016
Rank #349  ·  2016 List  ·  2015 Installation Data
Residential · Rooftop Contractor
0
2015 Installation Data
2015
Rank #347  ·  2015 List  ·  2014 Installation Data
Residential · Rooftop Contractor
0
2014 Installation Data
2014
Rank #387  ·  2014 List  ·  2013 Installation Data
Installer
0
2013 Installation Data
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  • Home
  • Top Solar Contractors
  • Articles
    • Most Recent Posts
    • News
      • Latest News Items
      • SPW State News Hub
      • IRA/OBBBA coverage
      • Solar tariffs
      • U.S. manufacturing updates
    • Featured
      • Latest Feature Stories
      • Benchmarking U.S. Solar Manufacturing
      • SPW’s Rising Stars
      • Trends in Solar
      • The Solar Explorer
  • Policy
    • Latest policy headlines
    • IRA/OBBBA Coverage
    • Tariffs and Court Cases
  • Markets
    • Residential
    • Commercial
    • Community Solar
    • Utility
    • Storage
  • Products
    • 2026 Top Products application
    • Winners of SPW’s 2025 Top Products
    • Batteries and Storage
    • Electric Vehicle (EV)
    • Inverters
      • U.S. solar inverter manufacturers
    • Racking and Mounting
      • U.S. solar mounting manufacturers
    • Software
    • Solar Panels
      • U.S. solar panel manufacturers
  • Resources
    • About SPW
    • Digital Issues
    • Event Coverage
    • Podcasts
    • Product Manufacturing Locations
      • U.S. solar inverter manufacturers
      • U.S. solar mounting manufacturers
      • U.S. solar panel manufacturers
    • Solar Classrooms
    • Suppliers
    • Videos
    • Views
    • Voices
    • Webinars / Digital Events
    • Whitepapers
  • 2026 Leadership
    • 2025 Winners
    • 2024 Winners
    • 2023 Winners
    • 2022 Winners
  • Advertise
  • Subscribe