Compare Local Pros
Coldwell Energy vs Diamond Electric
Placer Electrical Contractors Comparison · Updated March 2026
Coldwell Energy brings double the licensing history and workers comp coverage, while Diamond Electric lacks workers compensation insurance on file.
| Coldwell Energy | Diamond Electric | |
|---|---|---|
| Rating | ★ 4.8 | ★ 5.0 |
| Years Licensed | 14 years | 6 years |
| License # | 969149 | 1062433 |
| Workers' Comp | ✓ Yes | — |
| Bond Amount | $25,000 | $25,000 |
| Location | Rocklin, CA | Rocklin, CA |
| Website | coldwellenergy.com | diamondelectricco.com |
Key Differences
What Customers Say
Coldwell Energy
Customers consistently highlight smooth installation processes, professional workmanship across diverse solar projects, and responsive customer service including leadership involvement in resolving concerns.
Diamond Electric
Customers note quality electrical repairs in commercial settings with satisfactory service experiences, though feedback is limited in volume and project diversity.
Key Takeaway: Coldwell Energy demonstrates breadth across complex residential and agricultural solar installations with detailed customer feedback, while Diamond Electric shows competence in traditional commercial electrical work but limited evidence of handling complex system projects.
Customer Reviews
Coldwell Energy
Update: After posting this review, I was contacted directly by Coldwell Solar's president, Sean, who assigned a team to work on our behalf to get the issues addressed. Coldwell has done an outstanding...
Super excited to be work with Coldwell Solar team on our next solar project. Check out their community solar program and the renewable solar credits. Huge opportunities to save on energy costs.
Coldwell Solar installed two arrays for us. The whole process went extremely smooth and the systems are working great.
Diamond Electric
These guys are awesome! Had jesse come in and fix the wiring in our dental office and he did a great job! Highly recommend them for any of your electrical needs!
Consider Coldwell Energy if...
- ✓ You're planning a solar installation for your home or business, where Coldwell's 14 years of solar-specific experience means familiarity with utility interconnection, evolving panel technology, and maximizing incentive programs
- ✓ You want workers compensation coverage in place to protect yourself from liability if someone is injured during your project
- ✓ Your project involves complexity like older roof structures, agricultural applications, or tracker systems where their documented experience with diverse installations provides reassurance
- ✓ You value a company with established operational systems and customer service responsiveness, as evidenced by leadership involvement in resolving concerns
Consider Diamond Electric if...
- ✓ You need traditional electrical work like wiring repairs, panel upgrades, or commercial office electrical rather than solar installation
- ✓ You're willing to verify their liability insurance coverage directly and confirm your homeowner's policy adequately covers contractor injuries given the lack of workers comp on file
- ✓ Your project is straightforward electrical work where 6 years of licensing provides sufficient experience for the scope
- ✓ You're comparing multiple electrical contractors and plan to ask detailed questions about insurance and crew experience
Questions to Ask Before Hiring
- → For Diamond Electric: Ask directly about their liability insurance coverage and what protection exists if a worker is injured on your property, then verify with your homeowner's insurance whether you have adequate coverage for uninsured contractors
- → For Diamond Electric: Ask for references from projects similar in scope to yours and how long their current crew has worked together, given the limited review history
- → For either company: Request detailed project timelines and ask how they handle unexpected complications like hidden damage or permitting delays
- → For Coldwell Energy: If your project involves solar, ask about their experience with your specific utility provider's interconnection process and current wait times
The Bottom Line
If you need solar installation, Coldwell Energy is the clear choice with specialized experience, workers comp protection, and 14 years navigating the complexities of renewable energy projects. Their documented track record across residential and agricultural solar installations demonstrates capability that Diamond Electric simply doesn't show. If you need traditional electrical work like wiring repairs or commercial electrical services, Diamond Electric serves that niche, but you must address the workers comp gap directly by verifying their liability coverage and confirming your homeowner's policy protects you adequately. For solar projects, don't compromise on specialized experience and insurance protection.
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Frequently Asked Questions
If a Diamond Electric worker is injured on your property and they lack workers comp coverage, your homeowner's insurance may become the primary coverage for medical bills and lost wages. This could result in claims against your policy and potentially higher premiums. Before hiring them, you should verify what liability coverage they do carry and confirm with your insurance agent that you're adequately protected.
Yes, because even basic residential solar involves complexities like roof integrity assessment, electrical panel compatibility, utility interconnection, and navigating local permitting. Coldwell's 14 years means they've seen how different roof types age, how older electrical systems integrate with solar, and how to navigate complications that arise. Their experience reduces the likelihood of costly surprises mid-project.
While Diamond Electric holds an electrical contractor license, their documented project history focuses on commercial wiring and repairs, not solar installations. Solar requires specialized knowledge of inverter technology, module specifications, structural load calculations, and utility interconnection procedures. There's no evidence in their profile suggesting solar expertise, so you should ask directly about their solar installation experience before proceeding.
The $25,000 bond protects you if work isn't completed as agreed, but workers compensation protects you from liability for worker injuries, which is a different risk entirely. Medical costs and lost wages from a serious injury can far exceed bond amounts. Workers comp is about protecting your assets from injury claims, not just ensuring work completion.
Looking for the Best?
See our ranked list of top electrical contractors in Placer.
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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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