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Best Licensed Solar Contractors in Fremont, CA

4 solar companies registered in Fremont 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 Fremont. 4 passed license verification. All 4 are listed below. Our methodology

We earn a fee when you call businesses through numbers on this site. This never affects who is listed or how they rank.

  1. 1.Tesla Energy Operations Inc.

    ✓ CSLB License #888104 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2006
    Phone
    (844) 837-5201

  2. 2.Sunvault

    ✓ CSLB License #1058411 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2019
    Phone
    (240) 515-5671

  3. 3.Gu Development Inc.

    ✓ CSLB License #1117117 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2024
    Phone
    (650) 587-8648

  4. 4.Enphase Energy, Inc.

    ✓ CSLB License #1146208 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2025
    Phone
    (877) 797-4743

Compare the top 4 at a glance

CompanyLicenseWorkers' compLicensed since
Tesla Energy Operations Inc.#888104On file2006
Sunvault#1058411On file2019
Gu Development Inc.#1117117On file2024
Enphase Energy, Inc.#1146208Expired on file2025

Alameda County solar licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 40 active C-46 solar licenses in Alameda County, 4 of them registered in Fremont. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Fremont license has been held 2 years, and the longest-standing one dates to 2006. 3 of Fremont's 4 licenses (75.0%) carry 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: 40 of the county's 40 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 Fremont: common questions

How many licensed solar contractors are there in Fremont?

4 active C-46 solar licenses are registered in Fremont, out of 40 across Alameda County. 4 Fremont-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 Fremont and 40 across Alameda County, the longest-standing issued in 2006. 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 3 of Fremont's 4 currently carry. 2 Alameda County licenses expire within 90 days.

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