Compare Local Pros
Diablo Solar Services vs Sol R Us
Contra Costa Solar Contractors Comparison · Updated March 2026
Diablo Solar Services brings 42 years of specialized experience versus Sol R Us's 5 years, a difference that matters significantly for complex solar projects.
| Diablo Solar Services | Sol R Us | |
|---|---|---|
| Rating | ★ 4.2 | ★ 4.8 |
| Years Licensed | 42 years | 5 years |
| License # | 454228 | 1077212 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Martinez, CA | Concord, CA |
| Website | diablosolar.com | solrusengineering.net |
Key Differences
What Customers Say
Diablo Solar Services
Customers emphasize long-term relationships, thorough system knowledge, and Diablo's willingness to repair existing systems rather than push replacements.
Sol R Us
Customers highlight transparent pricing, careful installation workmanship, and smooth project management from initial quote through completion.
Key Takeaway: Diablo's feedback reflects a service and repair orientation with multi-decade customer relationships, while Sol R Us reviews focus on efficient new installation execution and upfront transparency.
Customer Reviews
Diablo Solar Services
Mike and his team are incredible, and I don't say that lightly. From my own personal experience working with both solar and pool service companies, Diablo Solar is an easy one for me to recommend. The...
Diablo saved me from another solar company that tried to pressure me into a more expensive program for repair of my solar panel. Diablo saved me thousands of dollars with expert advice and a staff tha...
Unlike many of their competitors, Diablo were willing to expand and existing solar system, and were able to maximally exploit existing equipment to cut the total cost. They did not try to oversell, co...
Sol R Us
SOL R US Electrical Engineering Review Our experience with SOL R US was excellent from start to finish. Daniel, Chris, Jessica and their in-house crew of Electricians and Roofers are all amazing peop...
I was very satisfied with this install. It's been a year with no issues. Reliable customer service and on site electrician was good. The installation team knew how to walk on our old tile roof and bro...
Very well planned system and execution. The team is open, transparent, proactive, and professional. I had about 8 different offers, and while this system was the most expensive, the cost per kw was...
Consider Diablo Solar Services if...
- ✓ You have a pool solar heating system requiring maintenance, repairs, or replacement, as Diablo has specialized expertise in this area that Sol R Us doesn't advertise
- ✓ Your project involves an older solar system needing diagnosis or repair, where Diablo's 42 years of experience with legacy equipment and evolving technologies provides significant advantage
- ✓ You're seeking a long-term service relationship for ongoing maintenance rather than a one-time installation, as customer feedback shows relationships spanning decades
- ✓ You prefer a contractor who will assess repair options before recommending full replacement, as reviews specifically mention Diablo's willingness to repair rather than upsell
Consider Sol R Us if...
- ✓ Your project requires roof repairs or structural work alongside solar installation, as Sol R Us maintains in-house roofing crews to handle both simultaneously
- ✓ You need main electrical panel upgrades as part of your solar installation, which Sol R Us handles directly with their electrical team
- ✓ You value transparent pricing breakdowns and detailed technical explanations during the sales process, which customers consistently mention in feedback
- ✓ You're installing a new photovoltaic system with battery storage and want a streamlined process with a single company managing all components
Questions to Ask Before Hiring
- → Ask Diablo Solar Services about their current availability during peak seasons, as some feedback mentions scheduling challenges during busy periods
- → Ask Sol R Us about their experience troubleshooting older solar systems if your installation is more than 10 years old, given their shorter operational history
- → If you have a pool solar system, confirm whether Sol R Us services this technology or if you'd need to find a separate contractor for pool solar needs
- → Ask both companies for references from projects similar to yours in scope, particularly if you're doing repairs rather than new installation
The Bottom Line
For new photovoltaic installations requiring roof work or panel upgrades, Sol R Us offers a streamlined approach with integrated crews and transparent pricing that customers consistently praise. However, for pool solar systems, repairs on existing installations, diagnostics on older equipment, or situations where you want a contractor with deep troubleshooting experience, Diablo Solar Services' 42 years of specialized operation provides meaningfully greater expertise. If your solar system is more than a decade old or involves complexity beyond standard installation, Diablo's experience gap isn't just impressive on paper—it translates to practical problem-solving ability that a 5-year-old company simply hasn't had time to develop.
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Frequently Asked Questions
Yes, particularly for anything beyond straightforward new installations. Diablo's four decades mean they've worked with equipment from manufacturers no longer in business, diagnosed problems Sol R Us hasn't encountered yet, and developed troubleshooting instincts that only come from repetition. For repairs, system expansions on older installations, or complex diagnostics, this experience difference is substantial.
Sol R Us has the advantage here with in-house roofing crews, allowing them to coordinate both aspects without hiring subcontractors. Diablo does coordinate with roofers for panel removal and reinstallation, but you're working with two separate companies. If your roof needs repairs or replacement concurrent with solar work, Sol R Us's integrated approach simplifies the process.
Diablo Solar Services explicitly specializes in pool solar heating alongside photovoltaic systems, with decades of experience in seasonal startup, shutdown, and leak repairs. Sol R Us focuses on photovoltaic installations and doesn't mention pool solar in their service descriptions. If you have pool solar needs, Diablo is the clear choice.
Diablo customers emphasize long-term relationships, repair expertise, and technicians who explain systems thoroughly, reflecting a service-oriented maintenance business. Sol R Us customers focus on installation quality, transparent pricing, and project management efficiency, suggesting a company optimized for new system installations. Both receive positive feedback, but for different operational strengths.
Looking for the Best?
See our ranked list of top solar contractors in Contra Costa.
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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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