Installer profile
Diablo Solar & Electrical Services, Inc.
Diablo Solar is not an unlicensed newcomer. CSLB lists Diablo Solar Services Inc on active license 454228 with C-46 Solar and C-10 Electrical classifications, issued in 1984. The company says it became Diablo Solar Services in 1984 and that Bryan Raymond and Mike Powers bought it in 2015. It describes East Bay work and a team of professional installers. The operating history is meaningful. It is not enough to overlook the current state disclosure.
CSLB displays pending disciplinary action in the form of Citation 2 2026 001204, dated August 11, 2026. The public disclosure alleges failure to report license changes, a willful or fraudulent act, and license personnel variation. Those are allegations, not final findings, and the license remains active. Still, pending CSLB disciplinary action is government enforcement under this rubric, so the grade is capped at D. Do not sign until you ask for the company's explanation, the current citation status, and a written statement of the legal entity, responsible personnel, warranty, and escalation path for your job.
The evidence
CSLB issued license 454228 on March 29, 1984. Diablo says Diablo Solar Services was created in 1984 and that Bryan Raymond and Mike Powers bought the company in 2015. The long license record is verified, while the ownership narrative is the company's account.
Source: CSLB license 454228
CSLB shows pending disciplinary action through Citation 2 2026 001204, dated August 11, 2026. Its public disclosure lists alleged violations of B&P 7083 for failure to report license changes, B&P 7116 for willful or fraudulent act, and B&P 7117.B for license personnel variation. The citation is pending, not a final finding. BBB separately shows one 2023 complaint in three years, with status Answered.
Source: CSLB pending citation disclosure
No Diablo Solar result appeared in the three Solar Power World tables reviewed: 2026 Top Solar Contractors, 2025 Top California Solar Contractors, and 2026 Top Solar Installers. This research does not supply a third-party project total or kilowatt figure for the company.
CSLB lists Diablo Solar Services Inc as a current and active corporation with C-46 Solar and C-10 Electrical classifications under license 454228, expiring March 31, 2028. The record lists a $25,000 contractor bond with a cancellation date shown as September 16, 2026 and workers compensation coverage through March 1, 2027. The active license does not resolve the pending citation.
Source: CSLB license 454228
The reviewed FAQ publishes manufacturer product terms, and BBB says Diablo offers full warranties on products and installations, but no exact company workmanship or installation warranty term was found. Before contracting, get the labor duration, exclusions, remedy, and responsible entity in writing.
Source: Diablo Solar FAQ
Company facts
| CSLB entity | Diablo Solar Services Inc, Corporation |
| CSLB license | 454228, C-46 Solar | C-10 Electrical, current and active; issued March 29, 1984; expires March 31, 2028 |
| CSLB address | 1990 Olivera Road Suite A, Concord, CA 94520 |
| Contractor bond | American Contractors Indemnity Company, bond 100719554, $25,000; effective February 1, 2023; cancellation date shown September 16, 2026 |
| Workers compensation | Carolina Casualty Insurance Company, policy BNET295467192; March 1, 2026 to March 1, 2027 |
| Company founding claim | 1984 |
| Stated service area | East Bay, with offices or work in Martinez, Petaluma, Napa, Marin, Sonoma, Solano, and Contra Costa counties |
| Workmanship warranty | Not published or found; reviewed material primarily lists manufacturer warranty terms |
| Pending CSLB action | Citation 2 2026 001204, dated August 11, 2026; pending and not a final finding |
Data pulled August 24, 2026 from CSLB license 454228, CSLB pending citation disclosure, Diablo Solar team page, Diablo Solar FAQ and Solar Power World 2026 list.
How to read this
A D here does not decide the pending citation for you. CSLB has not made a final finding in the public record reviewed. The grade says the allegation is material enough that a buyer should pause and verify the current status before paying a deposit. Ask for documents, not a verbal reassurance, and compare the answer with the contractor name and license printed on the proposal. Our full rubric, including how our own installation business gets graded on the same scale, is on the methodology page. We are a solar installer and we partner with other solar companies. Grading is structurally separated from revenue; see disclosures.