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Calpro Solar vs High Definition Solar
Contra Costa Roofing Contractors Comparison · Updated February 2026
Calpro Solar's 37 years of licensing experience more than doubles High Definition Solar's 16 years, offering deeper expertise for complex installations.
| Calpro Solar | High Definition Solar | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.1 |
| Years Licensed | 37 years | 16 years |
| License # | 549715 | 949189 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Brentwood, CA | Concord, CA |
| Website | calprosolar.com | highdefinitionsolar.com |
Key Differences
What Customers Say
Calpro Solar
Customers consistently highlight Calpro Solar's no-pressure consultations, clear communication throughout projects, and responsive post-installation service when issues arise.
High Definition Solar
Customers praise High Definition Solar's professional crews, single-day installation efficiency, and usage-based system sizing, though some experienced service communication delays years after installation.
Key Takeaway: Both companies receive praise for pressure-free sales, but Calpro Solar shows more consistent feedback regarding ongoing service responsiveness while High Definition Solar stands out for installation speed.
Customer Reviews
Calpro Solar
Very great full to George and his family for quick response and taking care of the issue with my Solar. He had installed Solar with backup battery two years ago through Sungrade based out of Walnut Cr...
To all of you out there considering various solar companies, I had the good fortunate to work with CalPro Solar. Prior working with them, I went through several other solar providers. Each one had the...
Super professional and friendly people doing great work. It has been a pleasure working with them.
High Definition Solar
Super effort to install my job on the scheduled day. The crew arrived at exactly 8:oo AM as promised and were completely finished at 2:00 pm. Everything worked! The crew was very professional. I aam ...
Quick response, took time to explain the process and were able to process everything on time. It went smoothly. Jairo was super helpful and patient!
We had HD Solar do a big install for us in Richmond California. They did a great job, very professional, and we love saving huge amounts of money of electricity now! Plus, no more power outages due to...
Consider Calpro Solar if...
- ✓ Your roof is older or has potential structural concerns that require experienced assessment before solar installation
- ✓ You prefer working with a contractor whose entire 37-year focus has been solar energy systems rather than split between multiple specialties
- ✓ Consistent post-installation service responsiveness is a priority based on customer feedback patterns
- ✓ You want a Brentwood-based contractor with deep familiarity with Contra Costa County permitting and local solar regulations spanning nearly four decades
Consider High Definition Solar if...
- ✓ You need both roof work and solar installation and want a single contractor to handle both projects without coordination between separate companies
- ✓ Fast installation completion matters to you, as customers specifically mention single-day installations
- ✓ You appreciate contractors who size systems based on actual electricity usage data rather than maximizing panel count
- ✓ You're located in areas beyond Contra Costa County, as High Definition Solar has documented work across multiple Northern California counties including Santa Clara
Questions to Ask Before Hiring
- → Ask High Definition Solar about their service response protocols for issues arising years after installation, given some customer experiences with delayed communication
- → Ask Calpro Solar whether they partner with roofing contractors if your roof needs work before solar installation, since they focus exclusively on solar
- → Ask both companies for references from installations completed 5-10 years ago to understand long-term service quality
- → Ask High Definition Solar how they balance resources between solar and roofing projects during busy seasons
The Bottom Line
Calpro Solar holds clear advantages for most homeowners through 37 years of specialized solar experience, consistent service responsiveness, and exclusive focus on solar energy systems. Their additional two decades in the industry means greater exposure to complications, technology changes, and long-term system performance. Choose High Definition Solar if you specifically need both roofing and solar work handled by one contractor, prefer their documented single-day installation approach, or are located outside Contra Costa County where they have broader regional experience. For solar-only projects, especially those involving older homes or complex battery integration, Calpro Solar's depth of specialized experience provides greater assurance. Both maintain proper licensing and insurance, so your choice should center on whether you value Calpro's specialized longevity or High Definition's dual-trade capability.
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Frequently Asked Questions
Both companies demonstrate professional installation quality based on customer feedback. Calpro's 37 years versus 16 years is most relevant when projects involve complications like aging roofs, unusual electrical configurations, or long-term troubleshooting rather than straightforward installations. For standard residential solar on newer homes, both have sufficient experience.
It depends on your project needs. If your roof requires repair or replacement before solar installation, having one contractor handle both eliminates coordination issues and potential warranty gaps. However, if you only need solar, Calpro's exclusive focus means their entire team specializes in solar systems without dividing attention across multiple trades.
Calpro Solar receives consistent mentions of responsive post-installation service. High Definition Solar shows a mixed pattern, with many customers praising ongoing support relationships spanning years, while others experienced communication challenges when issues arose later. Ask High Definition Solar specifically about their service department structure and response time commitments.
Calpro Solar's 37 years of specialized solar experience gives them deeper exposure to unusual situations and evolving battery technology. While High Definition Solar certainly handles battery systems, Calpro's longer exclusive focus in solar means they've likely encountered more edge cases in system design and integration with aging infrastructure.
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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 February 27, 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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