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Diablo Solar Services vs Synergy 768
Contra Costa Electrical Contractors Comparison · Updated March 2026
Diablo Solar brings 42 years of specialized solar experience including pool systems versus Synergy 768's 12 years focused on modern photovoltaic and EV infrastructure.
| Diablo Solar Services | Synergy 768 | |
|---|---|---|
| Rating | ★ 4.2 | ★ 4.3 |
| Years Licensed | 42 years | 12 years |
| License # | 454228 | 994847 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Martinez, CA | Brentwood, CA |
| Website | diablosolar.com | synergy768.com |
Key Differences
What Customers Say
Diablo Solar Services
Customers emphasize thorough technical diagnostics, repair-versus-replace guidance, and multi-decade relationships with responsive technicians who explain systems clearly.
Synergy 768
Customers highlight on-schedule and on-budget project completion with strong owner accessibility during installations, though some note administrative follow-through gaps.
Key Takeaway: Diablo Solar's feedback centers on diagnostic expertise and long-term service relationships, while Synergy 768's reviews focus on new installation project management and contemporary system integration.
Customer Reviews
Diablo Solar Services
Mike and his team are incredible, and I don't say that lightly. From my own personal experience working with both solar and pool service companies, Diablo Solar is an easy one for me to recommend. The...
Diablo saved me from another solar company that tried to pressure me into a more expensive program for repair of my solar panel. Diablo saved me thousands of dollars with expert advice and a staff tha...
Unlike many of their competitors, Diablo were willing to expand and existing solar system, and were able to maximally exploit existing equipment to cut the total cost. They did not try to oversell, co...
Synergy 768
Synergy 768 executed a very nice design for an expansion of our existing solar/battery system. Other companies had expressed doubt that the system could be expanded. After the plans were approved, the...
Ed Cotas and the Synergy 768 team performed professionally and punctually in installing the solar panel system at our home. They have been ready and available to answer any questions we have had. I w...
Synergy did a great job with a complicated ground mount solar system for me. They took care of everything including permits, PG&E, batteries and training !
Consider Diablo Solar Services if...
- ✓ You have an existing solar system needing diagnosis, repair, or expansion, particularly if it's older equipment or involves pool solar heating where Diablo Solar has specialized depth
- ✓ Your project involves coordination with roof replacement, where their decades of experience managing panel removal and reinstallation reduces risk of system damage
- ✓ You value a repair-first approach and technical guidance over decades rather than default system replacement recommendations
- ✓ You're seeking a contractor who has maintained operations and customer relationships through multiple market cycles and technology transitions
Consider Synergy 768 if...
- ✓ You're installing a new solar system with battery storage or integrating EV charging infrastructure where Synergy 768 specializes in contemporary energy ecosystems
- ✓ You want direct owner involvement throughout your project, from initial consultation through installation oversight and utility coordination
- ✓ On-schedule, on-budget completion is your primary concern based on their consistent delivery pattern in customer feedback
- ✓ Your project involves complex permitting or PG&E coordination where they've demonstrated reliable administrative handling
Questions to Ask Before Hiring
- → For existing system work, ask Diablo Solar how they handle parts availability for older equipment and what their diagnostic process involves before recommending replacement versus repair
- → Ask Synergy 768 about their process for completing rebate paperwork and administrative follow-through, given some customer feedback noting concerns in this area
- → For new installations with either company, request references from projects completed in the past 12 months that match your system type and complexity
- → Ask both contractors about warranty coverage differences between repair work versus new installations and who handles warranty claims for equipment they install
The Bottom Line
Choose Diablo Solar Services if you have an existing system needing service, a pool solar project, or value deep diagnostic expertise from 42 years of navigating equipment obsolescence and technology changes. Their repair-focused approach and decades of sustained operations make them the clear choice for maintenance, troubleshooting, and complex roof coordination scenarios. Choose Synergy 768 if you're installing a new photovoltaic system with battery storage or EV charging, where their established 12-year focus on contemporary energy infrastructure and strong owner involvement provide relevant specialization. For straightforward new solar installations without pool heating components, either contractor has adequate credentials—your decision comes down to whether you prioritize legacy depth or modern integration expertise.
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Frequently Asked Questions
Their project list includes battery system installations, inverter reconnections, and modern photovoltaic work alongside pool solar, indicating they've adapted to current technology. However, Synergy 768's focus on battery storage and EV charging integration suggests deeper specialization in contemporary energy ecosystems. If your project centers on cutting-edge battery backup or vehicle charging, clarify each contractor's specific experience with your equipment brands.
Diablo Solar has clear specialization in pool solar heating with explicit experience in seasonal startup, shutdown, and leak repairs—services Synergy 768 doesn't list. If you're installing or servicing a pool solar system, Diablo Solar's four decades in this niche provides substantially more relevant expertise. Ask them about typical lifespan expectations and maintenance requirements for pool systems in Contra Costa County's climate.
Synergy 768's Ed Cotas maintains high involvement in consultations and project oversight, which customers specifically mention as a positive. Diablo Solar's ownership structure is unclear from available data, though their long-term customer relationships suggest consistency. If direct owner access matters to you, confirm with Diablo Solar who you'll work with throughout your project and whether that person has authority to make decisions on-site.
Diablo Solar has some feedback about scheduling challenges during busy seasons and customer service communication difficulties. Synergy 768 has concerns noted about administrative follow-through on tasks like rebate paperwork. Neither pattern suggests systemic failure, but ask both companies directly about their current customer communication process, who your primary contact will be, and how they handle scheduling during peak solar season.
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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 09, 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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