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Green Stock Solar vs J R Construction Sol Solutions
Napa Solar Contractors Comparison · Updated March 2026
These companies serve completely different roles in solar projects: Green Stock Solar installs solar systems while J R Construction Sol Solutions performs energy inspections and compliance certifications.
| Green Stock Solar | J R Construction Sol Solutions | |
|---|---|---|
| Rating | ★ 3.0 | ★ 5.0 |
| Years Licensed | 15 years | 15 years |
| License # | 961800 | 953923 |
| Workers' Comp | ✓ Yes | — |
| Bond Amount | $25,000 | $25,000 |
| Location | Napa, CA | Napa, CA |
| Website | www.greenstocksolar.com | www.solsolutions4u.com |
Key Differences
What Customers Say
Green Stock Solar
Customers praise Green Stock Solar for professional installation crews, responsive office communication, and quality system design work tailored to residential properties.
J R Construction Sol Solutions
Customers consistently highlight J R Construction Sol Solutions for thorough inspections, technical expertise, and detailed assessments that identify cost-saving opportunities.
Key Takeaway: The feedback patterns reflect fundamentally different services: Green Stock is evaluated on installation execution and customer service, while J R Construction is assessed on inspection accuracy and technical knowledge.
Customer Reviews
Green Stock Solar
Green stock solar did an amazing job ! David is very professional and planned the best solar system we could hope for. Mark at the office is super responsive and helpful. Also the guys doing the work ...
Green Stock Solar is Napa’s best residential solar power installer. Committed to the highest installation quality, local customer service and industry best technology, Green Stock has earned their r...
J R Construction Sol Solutions
Josue is very thorough and quick.
Professional, friendly, worked around the other contractors.
The company was quick and efficient when we called out for assistance. Josh Rosado went to great lengths in examining our home, and ended up savings us thousands of dollars. Thank you!
Consider Green Stock Solar if...
- ✓ You need a solar power system actually installed on your property, not just inspections or compliance certifications
- ✓ You want full insurance protection including workers compensation coverage, eliminating your liability risk during roof work
- ✓ You value system design expertise and planning tailored to your specific property's solar potential
- ✓ You need responsive communication during the planning phase and professional installation crews for the actual work
Consider J R Construction Sol Solutions if...
- ✓ You need HERS inspections, energy code compliance certifications, or CALGREEN inspections for a building project
- ✓ You're a builder or contractor requiring third-party verification that a solar installation meets California energy requirements
- ✓ You want thorough technical assessments that may identify cost-saving opportunities in your home's energy performance
- ✓ You're willing to verify liability coverage through your homeowner's insurance and accept the workers comp gap for inspection work
Questions to Ask Before Hiring
- → Ask Green Stock Solar how their warranty terms transfer if you sell your home, as feedback indicates this has been a concern for some customers
- → Ask J R Construction Sol Solutions directly about liability insurance coverage and confirm with your homeowner's policy whether you're covered if an inspector is injured on your property
- → If you need both installation and inspections, ask Green Stock Solar which energy inspectors they typically work with or if they coordinate HERS testing
- → Clarify exactly what services each company provides for your specific project to ensure you're hiring the right contractor for the right job
The Bottom Line
You're comparing two companies that do completely different work. If you need solar panels installed on your home, hire Green Stock Solar, which has the full insurance coverage and installation expertise for that work. If you need HERS inspections or energy code compliance certifications, that's what J R Construction Sol Solutions provides, though you'll need to address their workers comp gap directly. Most homeowners hiring a solar installer need only the installation contractor, as reputable installers coordinate required inspections themselves. Clarify what services your project actually requires before scheduling consultations, and don't assume these companies are interchangeable options.
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Frequently Asked Questions
No. J R Construction specializes in energy inspections and compliance certifications, not solar installation. They perform the technical testing and verification work that may be required to prove your solar system meets California energy codes, but they do not design or install solar panels. You would need to hire Green Stock Solar or another solar installer for the actual installation work.
It depends on your jurisdiction and project requirements. Many residential solar installations require HERS testing or energy code compliance verification, which J R Construction provides. However, your solar installer may already coordinate with their own inspection partners. Ask Green Stock Solar whether they handle all required inspections or if you need to separately arrange energy compliance testing.
This is a real liability concern you should address directly. While inspection work is less risky than rooftop installation, injuries can still occur during site visits. If J R Construction has no workers comp and someone is hurt at your property, you could potentially be liable for medical costs and lost wages. Contact your homeowner's insurance agent to understand your coverage and ask J R Construction about their current liability insurance status.
Both receive positive feedback for their respective specialties, so this isn't a useful comparison. Green Stock is praised for installation quality and system design, while J R Construction is recognized for inspection thoroughness and technical expertise. The meaningful question is which service you actually need: installation or inspection. Choose based on the work required, not general reputation.
Looking for the Best?
See our ranked list of top solar contractors in Napa.
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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