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Best Licensed Solar Contractors in Ontario, CA

3 solar companies registered in Ontario hold current CSLB licenses, verified against official records as of August 17, 2026. All 3 are listed below, ordered by workers' compensation cover and years licensed.

How we chose: We identified 3 companies registered in Ontario. 3 passed license verification. All 3 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.Daylight Solar Energy Corp

    ✓ CSLB License #903293 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2007
    Phone
    (626) 826-3832

  2. 2.Best Value Solar Energy Systems

    ✓ CSLB License #733942 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    1997
    Phone
    (714) 883-9501

  3. 3.E Solar Company

    ✓ CSLB License #1054112 - look up this number at CSLB
    Verified
    August 17, 2026
    Licensed since
    2019
    Phone
    (909) 720-3211

Compare the top 3 at a glance

CompanyLicenseWorkers' compLicensed since
Daylight Solar Energy Corp#903293On file2007
Best Value Solar Energy Systems#733942Exempt or none on file1997
E Solar Company#1054112Exempt or none on file2019

San Bernardino County solar licensure at a glance

California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 34 active C-46 solar licenses in San Bernardino County, 3 of them registered in Ontario. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Ontario license has been held 18 years, and the longest-standing one dates to 1997. 1 of Ontario's 3 licenses (33.3%) 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: 34 of the county's 34 licenses carry the same $25,000 bond California sets by statute. 1 county license reaches its 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 Ontario: common questions

How many licensed solar contractors are there in Ontario?

3 active C-46 solar licenses are registered in Ontario, out of 34 across San Bernardino County. 3 Ontario-registered companies passed our license verification, and all 3 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. 3 active C-46 solar licenses are registered in Ontario and 34 across San Bernardino 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 Ontario's 3 currently carry. 1 San Bernardino County license expires within 90 days.

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