Best Licensed Solar Contractors in Walnut Creek, CA
3 solar companies registered in Walnut Creek 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.
- 45 active C-46 solar licenses in Contra Costa County; 3 registered in Walnut Creek
- 1 of Walnut Creek's 3 licenses (33.3%) carries current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Walnut Creek: 9 years
- Longest Walnut Creek licensure: since 2009
- 4 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 2009
- Phone
- (925) 324-7176
- Verified
- August 17, 2026
- Licensed since
- 2017
- Phone
- (415) 910-6808
- Verified
- August 17, 2026
- Licensed since
- 2018
- Phone
- (925) 444-5503
Compare the top 3 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Illuminate Solar Company | #937645 | On file | 2009 |
| H C I Solar | #1024165 | Expired on file | 2017 |
| Vernous Inc. | #1039437 | Exempt or none on file | 2018 |
Contra Costa County solar licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 45 active C-46 solar licenses in Contra Costa County, 3 of them registered in Walnut Creek. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Walnut Creek license has been held 9 years, and the longest-standing one dates to 2009. 1 of Walnut Creek'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: 45 of the county's 45 licenses carry the same $25,000 bond California sets by statute. 4 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 Walnut Creek: common questions
How many licensed solar contractors are there in Walnut Creek?
3 active C-46 solar licenses are registered in Walnut Creek, out of 45 across Contra Costa County. 3 Walnut Creek-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 Walnut Creek and 45 across Contra Costa County, the longest-standing issued in 2009. 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 Walnut Creek's 3 currently carry. 4 Contra Costa County licenses expire within 90 days.
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