Compare Local Pros
Sun Marshall Solar Services vs Robert's Solar
Solano Solar Contractors Comparison · Updated March 2026
Robert's Solar brings twice the experience, but Sun Marshall Solar Services carries workers compensation insurance that protects you from significant liability.
| Sun Marshall Solar Services | Robert's Solar | |
|---|---|---|
| Rating | ★ 5.0 | ★ 3.0 |
| Years Licensed | 15 years | 32 years |
| License # | 952018 | 690958 |
| Workers' Comp | ✓ Yes | — |
| Bond Amount | $25,000 | $25,000 |
| Location | Vallejo, CA | Dixon, CA |
| Website | sunmarshall.com | robertssolar.com |
Key Differences
Customer Reviews
Sun Marshall Solar Services
No reviews available
Robert's Solar
Thorough, conscientious, timely. Will definitely use again
Consider Sun Marshall Solar Services if...
- ✓ You want complete liability protection during installation, eliminating the risk of a worker injury claim affecting your homeowner's insurance or personal assets.
- ✓ You prefer working with a Vallejo-based contractor who may have shorter travel times if you're in western Solano County.
- ✓ You value the peace of mind that comes with a contractor carrying full insurance protections, even if it means working with a somewhat less experienced (though still veteran-level) company.
Consider Robert's Solar if...
- ✓ You're willing to verify your homeowner's insurance covers contractor injuries and accept that liability exposure in exchange for working with a contractor who has twice the licensing history.
- ✓ Your project involves an older or complex roof system where Robert's Solar's additional 17 years of problem-solving experience could prove valuable.
- ✓ You're located in Dixon or eastern Solano County where Robert's Solar has established their local presence.
- ✓ You plan to ask Robert's Solar directly about their current workers comp status, as insurance filings can change and may not reflect real-time coverage.
Questions to Ask Before Hiring
- → Ask Robert's Solar directly whether they've obtained workers compensation insurance since their last filing, and request a current certificate of insurance if available.
- → Confirm with your homeowner's insurance agent whether your policy covers injuries to uninsured contractors working on your property, and understand any deductible or premium implications.
- → Ask both contractors for references from projects completed in the past year, focusing on installations similar to your roof type and system size.
- → Request detailed written estimates that specify which company employees versus subcontractors will perform the work, as this affects workers comp coverage obligations.
The Bottom Line
Sun Marshall Solar Services is the safer choice for most homeowners because their workers compensation coverage protects you from liability exposure that could far exceed any benefit from Robert's Solar's additional experience. While Robert's Solar's 32 years in business is genuinely impressive compared to Sun Marshall's 15 years, both qualify as veteran contractors with sufficient expertise for residential solar installations. Unless you've confirmed with your insurance agent that you have robust coverage for uninsured contractor injuries—and you're comfortable with that risk—choose Sun Marshall Solar Services for the complete protection package.
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Frequently Asked Questions
That depends on your risk tolerance and homeowner's insurance coverage. The additional 17 years of experience is valuable for diagnosing roof complications and handling complex installations, but if a worker is seriously injured on your property, you could face a lawsuit or insurance claim that costs far more than any installation savings. Contact your insurance agent before deciding to understand your actual exposure.
Yes, you can make workers compensation coverage a condition of your contract. Some contractors work without workers comp because they operate as sole proprietors or use subcontractors who carry their own coverage. Ask Robert's Solar directly about their staffing model and whether they can provide proof of coverage before work begins.
Yes, 15 years qualifies Sun Marshall as a veteran contractor who has worked through multiple solar technology generations and thousands of installations. While Robert's Solar has more experience, 15 years is sufficient time to have encountered and resolved the vast majority of installation challenges in residential and commercial solar work.
Location primarily affects response time for service calls and whether the contractor has established relationships with local inspectors. If you're equidistant from both towns, this is a minor factor. Focus instead on the workers comp difference and which contractor provides more detailed references for projects similar to yours.
Looking for the Best?
See our ranked list of top solar contractors in Solano.
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How We Compare Contractors
License Verification
All license data is sourced from official California CSLB records and verified regularly.
Review Analysis
Customer reviews are aggregated from Google and analyzed to identify patterns in service quality.
Detailed Comparison
We analyze credentials, insurance, experience, and feedback to highlight meaningful differences.
Not all licensed contractors are created equal. While a valid license is the baseline requirement in California, contractors can vary significantly in experience, insurance coverage, and customer satisfaction.
- Experience matters: A contractor with 15+ years of experience has likely encountered and solved problems that newer contractors haven't faced yet.
- Workers' compensation protects you: If a contractor without workers' comp insurance has an employee injured on your property, you could be held liable.
- Reviews reveal patterns: Individual reviews can be misleading, but patterns across many reviews often reveal a contractor's true strengths and weaknesses.
- Bond amounts vary: A contractor's bond provides financial protection if they fail to complete work as agreed. Higher bonds offer more protection.
Taking time to compare contractors on these factors can save you from costly mistakes and help ensure your project is completed by a qualified professional.
Data Sources: License information from California CSLB. Ratings and reviews from Google. Last verified March 13, 2026.
This comparison is based on publicly available information. We recommend getting multiple quotes and verifying all credentials directly before hiring.
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