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Best Licensed Solar Contractors in Sonoma, CA

4 solar companies registered in Sonoma hold current CSLB licenses, verified against official records as of August 17, 2026. All 4 are listed below, ordered by workers' compensation cover and years licensed.

How we chose: We identified 4 companies registered in Sonoma. 4 passed license verification. All 4 are listed below. Our methodology

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  1. 1.Earth Star Electric

    ✓ CSLB License #810369 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2002
    Phone
    (707) 933-1510

  2. 2.Rocket Science

    ✓ CSLB License #732497 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1997
    Phone
    (415) 760-5779

  3. 3.B D S

    ✓ CSLB License #864390 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2005
    Phone
    (707) 373-2021

  4. 4.Bailey Smith Electric

    ✓ CSLB License #1042773 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2018
    Phone
    (415) 732-9324

Compare the top 4 at a glance

CompanyLicenseWorkers' compLicensed since
Earth Star Electric#810369On file2002
Rocket Science#732497Exempt or none on file1997
B D S#864390Exempt or none on file2005
Bailey Smith Electric#1042773Exempt or none on file2018

Sonoma County solar licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 31 active C-46 solar licenses in Sonoma County, 4 of them registered in Sonoma. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Sonoma license has been held 20 years, and the longest-standing one dates to 1997. 1 of Sonoma's 4 licenses (25.0%) carries current workers' compensation cover in CSLB's file. That is employee injury cover, not liability insurance, and a blank usually means an owner-operator with no employees - lawful, and not a mark against anyone. The contractor bond is not a signal here: 31 of the county's 31 licenses carry the same $25,000 bond California sets by statute. 2 county licenses reach their expiration date within the next 90 days. CSLB cannot link straight to a license record, so every listing above shows its number for you to type into CSLB's license lookup. How we verify.

Solar Contractors in Sonoma: common questions

How many licensed solar contractors are there in Sonoma?

4 active C-46 solar licenses are registered in Sonoma, out of 31 across Sonoma County. 4 Sonoma-registered companies passed our license verification, and all 4 are listed on this page. Only licenses CSLB shows as CLEAR and unexpired are listed.

Does California license solar contractors?

Yes. California licenses contractors by classification, and C-46 is the CSLB classification that authorises this work. 4 active C-46 solar licenses are registered in Sonoma and 31 across Sonoma County, the longest-standing issued in 1997. Only CLEAR, unexpired licenses appear here.

How do I check a solar contractor's license in California?

Every listing above shows its CSLB license number. CSLB cannot link straight to a record, so open its license lookup and type the number in: it shows status, expiration, the contractor bond and workers' compensation cover, which 1 of Sonoma's 4 currently carry. 2 Sonoma County licenses expire within 90 days.

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