West Coast Solar offers a full guarantee on solar installation in the Bay Area

As a top-quality installer of solar arrays throughout Sonoma County California and beyond – we stand behind our work and the solar products we install. Our competitive warranties protect your investment, ensuring many years of clean solar energy production for your Northern California property.

Our 10-year limited warranty protects you from:

  • Defects in roof-related work
  • Labor costs for the replacement of components covered under manufacturer warranties

The rated solar output of solar panels declines very slowly over time. Many solar panel manufacturers guarantee power output over a 20 to 25 year period, in addition to our warranties. West Coast Solar checks solar panels and components for defects during system installation. Our quality control process helps prevent future repairs, by installing dependable, top-quality equipment.

Our team stands by our guarantee for exceptional solar system installations. Contact us today to schedule your solar evaluation.

We stand by our work!

Learn more about our top-quality services.


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  • “After talking to five solar installation companies, we were quite happy with four of them but decided on West Coast Solar. And we’ve been very pleased with the whole experience…Everyone we’ve dealt with from WCS were courteous, professional, knowledgeable, and effective.”

    R. L., Fremont

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