Compare Local Pros
Cinnamon Energy Systems vs Core Energy
Santa Clara Solar Contractors Comparison · Updated March 2026
Cinnamon Energy Systems brings nearly double the licensed experience plus documented customer feedback, while Core Energy lacks verifiable review history.
| Cinnamon Energy Systems | Core Energy | |
|---|---|---|
| Rating | ★ 4.8 | ★ 1.0 |
| Years Licensed | 13 years | 7 years |
| License # | 976065 | 1042269 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Los Gatos, CA | San Jose, CA |
| Website | www.cinnamon.energy | coreenergy.io |
Key Differences
What Customers Say
Cinnamon Energy Systems
Customers consistently highlight smooth installation processes, responsive communication throughout permitting and installation phases, and professional crew work with attention to worksite cleanliness.
Key Takeaway: Cinnamon Energy Systems has extensive verifiable customer feedback documenting installation quality and service practices, while Core Energy has no available customer reviews to confirm actual performance.
Customer Reviews
Cinnamon Energy Systems
I started thinking about solar last year, but it was not until this year when I became serious. I talked to as many as 6 companies who serve San Jose area, and in the end, I decided to go with Cinnamo...
Cinnamon is a highly rated company and I was overall happy with the work. Sometimes communication was tricky but Consultant Michael Croft helped me navigate the process when clarification and service ...
We are quite happy with our solar power system installed by Cinnamon Energy Systems. We are fortunate enough to have south and west facing roofs and were able to work with them to install a system of...
Core Energy
No reviews available
Consider Cinnamon Energy Systems if...
- ✓ You want to verify installation quality and communication practices through documented customer experiences before committing to a multi-thousand dollar solar investment
- ✓ Your project involves complexity beyond basic panel installation, such as battery backup integration, electrical panel upgrades, heat pump additions, or coordination with upcoming roof replacement
- ✓ You value working with crews that have established track records in Santa Clara County permitting and utility coordination processes
- ✓ Your timeline depends on efficient permitting and inspection handling, where Cinnamon's documented 13-year history with local jurisdictions provides confidence
Consider Core Energy if...
- ✓ You've obtained detailed references directly from Core Energy for recent projects similar to yours and verified their installation quality firsthand
- ✓ Your project is straightforward solar panel installation without battery storage or additional electrification components
- ✓ You're willing to accept higher verification responsibility in exchange for potentially different pricing or availability
- ✓ You've confirmed their current crew composition, installation practices, and communication approach through direct conversation and reference checks
Questions to Ask Before Hiring
- → Ask Core Energy for at least three recent customer references with contact information and request permission to see completed installations similar to your project scope
- → Ask Core Energy how long their current installation crew has worked together and what their typical project timeline looks like from contract to final utility approval
- → Ask both companies about their warranty terms, service response times for system issues, and whether they directly handle post-installation service or contract it out
The Bottom Line
Cinnamon Energy Systems is the lower-risk choice for most homeowners. Their 13 years of licensed operation, broader service capabilities including battery storage and heat pumps, and most importantly, extensive customer feedback documenting professional installation practices and responsive communication provide verifiable confidence for a major home investment. Core Energy may be perfectly capable, but without customer feedback to verify their actual performance, you're evaluating credentials alone. If you're considering Core Energy, invest significant effort obtaining and checking recent references before signing a contract. For homeowners who need to make a decision this week, Cinnamon's documented track record provides substantially more confidence than Core Energy's unverified credentials.
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Frequently Asked Questions
Yes, particularly for navigating complications. Cinnamon's 13 years means they've handled more roof structure variations, electrical panel upgrade scenarios, and permitting requirement changes than Core Energy's 7-year history. More importantly, Cinnamon has documented customer feedback verifying they actually handle these situations well, while Core Energy lacks this verification entirely.
Not necessarily if you do thorough reference checking yourself. Request multiple recent customer contacts from Core Energy and actually call them to ask about installation quality, communication, and problem resolution. The concern isn't that they lack reviews but that you'll need to invest more effort verifying their performance independently.
This is unclear from their service description, which focuses on solar panel installation without mentioning battery systems. Ask Core Energy directly whether they install battery backup systems and request references from those specific projects, as battery integration requires different expertise than panel-only installations.
Their service breadth indicates deeper electrical and system integration expertise, which benefits even basic solar projects when electrical panel upgrades are needed or roof complexities arise. More significantly, their documented customer feedback on communication and installation quality provides verification that's simply absent for Core Energy regardless of project scope.
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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 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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