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Evolution Solar vs Simmitri
Santa Clara Solar Contractors Comparison · Updated March 2026
Simmitri brings 27 years of experience versus Evolution Solar's 5 years, plus workers comp coverage and dual roofing-solar capability.
| Evolution Solar | Simmitri | |
|---|---|---|
| Rating | ★ 4.5 | ★ 4.8 |
| Years Licensed | 5 years | 27 years |
| License # | 1077221 | 765156 |
| Workers' Comp | — | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Santa Clara, CA | Morgan Hill, CA |
| Website | evolutionsolar.net | www.simmitri.com |
Key Differences
What Customers Say
Evolution Solar
Customers consistently praise direct access to owner George throughout projects, with emphasis on educational explanations and responsiveness that continues years after installation.
Simmitri
Customers highlight Simmitri's comprehensive project management including permit coordination and utility interconnection, with professional crews completing work efficiently within expected timeframes.
Key Takeaway: Evolution Solar excels at personal owner involvement and accessible communication, while Simmitri demonstrates strength in managing complex administrative processes and larger-scope projects combining multiple services.
Customer Reviews
Evolution Solar
Overall a very good experience. George was knowledgeable and forthcoming. I felt comfortable throughout the whole process. George took care of all the complicated details of the installation and subse...
I am thrilled with the services I received from Evolution Solar! I had contacted Evolution Solar to inquire about a solar system for my house due to a referral from a friend who used their solar syste...
Evolution Solar installed a solar system on our house over 2 years ago. I just called Evolution Solar (George) for questions about monitoring. George immediately answered the call and explained every...
Simmitri
Simmitri installed our Enphase solar panels and later our battery system. They did a terrific job. Our system runs well after three years. They were good to work with. Their office helped us with th...
After interviewing 3 solar companies I selected Simmiti for my dolar installation. The planning and submissions to PGE and SCCounty Building were done in a timely manner. The installation crew was sup...
We can say that installing and working with Simmitri was a seamless experience. They did exactly as they say they would. The staff is amazing to work with, especially the Project Manager Pamela Rodrig...
Consider Evolution Solar if...
- ✓ You're doing a straightforward solar installation on a newer roof in excellent condition that won't require structural work or roofing repairs
- ✓ You value direct owner involvement throughout every phase and prefer working with a smaller operation where you'll speak with the same person consistently
- ✓ You've confirmed your homeowner's insurance provides adequate liability coverage for contractor injuries and you're comfortable accepting that risk
- ✓ Your project is solar-only with no roofing, gutter, or electrical panel work needed
Consider Simmitri if...
- ✓ Your roof is older than 10-15 years or you suspect it may need repair or replacement before adding solar panels
- ✓ You want a single contractor to coordinate both roofing and solar work rather than managing multiple companies
- ✓ Workers compensation coverage is non-negotiable for your peace of mind and liability protection
- ✓ Your project includes battery storage, electrical panel upgrades, or other complex elements requiring deeper trade experience
- ✓ You value a contractor who has navigated 27 years of regulatory changes and will likely still be operating when warranty issues arise years from now
Questions to Ask Before Hiring
- → For Evolution Solar: Ask specifically about liability coverage and confirm with your homeowner's insurance that you're protected if a worker is injured during installation
- → For Evolution Solar: Ask how many solar installations the company has completed and request references from projects with roof types similar to yours
- → For both: Ask about their experience with your specific roof type and what roof assessment they perform before mounting solar panels
- → For both: Ask who will be doing the actual installation work and how long those crew members have been with the company
The Bottom Line
For most homeowners, Simmitri is the safer choice. The 27-year track record means proven staying power for warranty support, the workers comp coverage protects you from liability, and the roofing expertise ensures your roof structure is properly assessed before solar installation. Evolution Solar offers excellent personal service and direct owner communication, but the lack of workers comp creates real liability risk that many homeowners won't want to accept. If your project involves any roofing work, Simmitri's dual capability eliminates contractor coordination headaches. Get quotes from both, but unless Evolution Solar is significantly cheaper and you've confirmed adequate liability coverage through your homeowner's policy, Simmitri's comprehensive credentials make it the more prudent selection.
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Frequently Asked Questions
Yes, it matters significantly. A 27-year contractor has installed solar through multiple generations of technology, handled thousands of roof types, and encountered complications a 5-year company hasn't seen yet. When unexpected issues arise—rotted roof decking, incompatible electrical panels, tricky permit situations—experience directly affects how smoothly problems get resolved. Simmitri has also proven business longevity, increasing the likelihood they'll be around if warranty issues emerge in 5-10 years.
This is a legitimate concern you should take seriously. If an installer falls from your roof and Evolution Solar has no workers comp, your homeowner's insurance becomes the primary coverage for medical bills and potential lawsuits. This could affect your insurance rates or coverage. Before hiring any contractor without workers comp, call your homeowner's insurance agent to understand your exposure and confirm your coverage limits are adequate.
Even for solar-only projects, having a contractor who understands roofing is valuable because solar panels are mounted directly to your roof structure. Simmitri can identify roof issues before installation that a solar-only company might miss. However, if you've recently replaced your roof and it's in excellent condition, Evolution Solar's focused solar expertise may be sufficient. Get quotes from both to see if there's actually a price premium.
Simmitri has clear advantages in experience depth, insurance coverage, and scope of services. Evolution Solar's strength is direct owner communication and personal service. If your roof is newer, the project is uncomplicated, and you've addressed the workers comp liability issue, Evolution Solar could work well. For most situations—especially older homes, projects involving roofing work, or homeowners prioritizing contractor stability—Simmitri's 27-year track record and complete insurance coverage make it the safer choice.
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See our ranked list of top solar contractors in Santa Clara.
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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 12, 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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