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Cobalt Power Systems vs Simmitri
Santa Clara Solar Contractors Comparison · Updated March 2026
Two highly experienced solar contractors with similar qualifications, differentiated primarily by Simmitri's dual roofing expertise versus Cobalt's solar specialization.
| Cobalt Power Systems | Simmitri | |
|---|---|---|
| Rating | ★ 4.3 | ★ 4.8 |
| Years Licensed | 23 years | 27 years |
| License # | 820697 | 765156 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Mountain View, CA | Morgan Hill, CA |
| Website | www.cobaltpower.com | www.simmitri.com |
Key Differences
What Customers Say
Cobalt Power Systems
Customers emphasize Cobalt's collaborative design approach, detailed technical explanations, and long-term relationships including system upgrades years after original installations.
Simmitri
Customers highlight Simmitri's administrative efficiency with permit management, documented inspections with photographic evidence, and timely project completion with high owner involvement.
Key Takeaway: Cobalt's feedback centers on patient educational conversations and complex technical scenarios, while Simmitri's emphasizes operational efficiency and comprehensive project documentation throughout execution.
Customer Reviews
Cobalt Power Systems
Excellent experience from first phone call to utility interconnection. Collaborative design process, professional installation and coordinated scheduling throughout. Have referred my network, includin...
Truly solid company. Great installs. When is comes to what truly matters the work being done on your home is the most important. Less BS to deal with on the backend. Solar and battery stays for 25 yea...
I selected Cobalt Power Systems after noticing several projects in the neighborhood and speaking with a customer. After speaking with the Cobalt sales person (Jay), and receiving a detailed proposal,...
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 Cobalt Power Systems if...
- ✓ Your project is solar-only without roof replacement needs, allowing you to work with a contractor whose entire focus is photovoltaic system design and performance.
- ✓ You're planning a phased approach with potential future upgrades or battery additions, as Cobalt maintains multi-year customer relationships and understands evolving system needs.
- ✓ Your installation involves specialty roofing materials or complex scenarios that other solar companies have declined, an area where Cobalt has documented experience.
- ✓ You value collaborative design conversations and detailed technical explanations throughout the decision-making process rather than just efficient project execution.
Consider Simmitri if...
- ✓ Your solar installation requires coordinated roof replacement or repair, making Simmitri's dual capability essential for single-contract accountability and eliminating inter-contractor disputes.
- ✓ You need comprehensive project documentation including photographic evidence and detailed inspection records for warranty or insurance purposes.
- ✓ You prefer high owner involvement throughout the project rather than working primarily with installation crews or project managers.
- ✓ Your project timeline requires efficient permit coordination and utility interconnection management, areas where customer feedback specifically highlights Simmitri's administrative strengths.
Questions to Ask Before Hiring
- → If considering Cobalt for a project needing roof work: Ask which roofing contractors they typically coordinate with and how they handle warranty responsibility when roof and solar issues overlap.
- → If considering Simmitri for a solar-only project: Ask what percentage of their current business is solar versus roofing to understand where their operational focus lies today.
- → For either company: Request references from projects completed 3-5 years ago to assess long-term system performance and post-installation support responsiveness.
The Bottom Line
If your project combines roof replacement with solar installation, Simmitri's dual expertise provides clear value through unified accountability and warranty clarity. For solar-only installations, Cobalt Power Systems offers deeper specialization in photovoltaic technology with a track record of complex scenarios and long-term customer relationships. Both contractors bring equivalent professional credentials and veteran experience to standard residential solar work. The decision should hinge on whether you need integrated roofing services now or prefer working with a solar specialist. Request detailed proposals from both, ask about their most complex recent projects similar to yours, and verify that whoever you choose will personally handle utility interconnection rather than leaving you to navigate PG&E coordination alone.
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Frequently Asked Questions
At this experience level, the four-year difference is negligible—both have seen multiple generations of solar technology and handled hundreds of installations. The meaningful distinction is whether those 23-27 years were spent specializing in solar technology specifically or split between roofing and solar disciplines, which affects depth versus breadth of expertise.
Only if roof work is confirmed or highly likely within your project timeline. If your roof has 10+ years of remaining life, choosing based on hypothetical future roofing needs sacrifices Cobalt's deeper solar specialization for a capability you won't use. If your roof needs replacement within 1-3 years, Simmitri's integrated approach becomes genuinely valuable.
Both companies install battery systems with documented customer experience. Cobalt shows evidence of adding batteries to existing systems years after original installation, suggesting they maintain relationships and understand system integration over time. Simmitri works with Enphase systems specifically and handles related electrical panel upgrades as part of their scope.
Cobalt's feedback emphasizes patient explanations and collaborative design conversations during the planning phase, suggesting more educational interaction upfront. Simmitri's feedback highlights responsiveness to questions and regular updates during execution, with high owner involvement throughout, suggesting more hands-on project management communication. Both approaches work—it depends whether you value front-end collaboration or execution-phase accessibility.
Looking for the Best?
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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