How to Choose the Right Solar Installer A Step-by-Step Guide
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To help you make an informed decision, this step-by-step guide covers everything you need to know about selecting the right solar installer from certifications and experience to pricing and warranties.
Why Choosing the Right Solar Installer Matters
Solar panel installation is a complex process that requires expertise in electrical systems, roofing, and local building codes. A qualified installer ensures:
Optimal system performance (maximizing energy production)
Compliance with local regulations (permits, inspections, and utility approvals)
Long-term reliability (proper mounting, wiring, and weatherproofing)
Access to incentives (help with tax credits, rebates, and financing)
Choosing an inexperienced or unlicensed installer can result in poor energy output, roof leaks, or even fire hazards.
Step 1: Check for Proper Licensing and Certifications
A. State and Local Licensing
Solar installers must hold the appropriate state contractor’s license and electrical certification. Requirements vary by location, so verify their credentials with:
Your state’s Contractors State License Board (CSLB)
Local building department
B. Industry Certifications
Look for installers with certifications from leading organizations, such as:
NABCEP (North American Board of Certified Energy Practitioners) The gold standard for solar professionals.
SEI (Solar Energy International) – Provides technical training.
Manufacturer Certifications (e.g., Tesla, SunPower, LG) Ensures they’re trained for specific equipment.
Pro Tip: Avoid companies that subcontract work unless they guarantee quality control.
Step 2: Evaluate Experience and Track Record
A. Years in Business
Companies with 5+ years of experience are more likely to deliver reliable installations. Newer companies may offer lower prices but lack expertise.
B. Number of Installations Completed
Ask:
How many solar systems have you installed? (100+ is a good benchmark)
Do you have experience with my roof type? (Tile, metal, flat, etc.)
C. Customer Reviews & References
Check:
Google Reviews (4.5+ stars is ideal)
BBB (Better Business Bureau) for complaints
Solar review sites (EnergySage, SolarReviews)
Ask for references from past customers
Red Flags:
Multiple complaints about leaks, delays, or poor customer service
No online presence or hidden reviews
Step 3: Compare Multiple Quotes
Get at least 3–5 quotes to compare:
System size (kW) and estimated energy production (kWh/year)
Equipment quality (panels, inverters, mounting hardware)
Warranty coverage (product vs. workmanship)
Financing options (loans, leases, PPAs)
Avoid the Cheapest Option
Low bids may mean:
Subpar equipment
Unlicensed labor
Hidden fees
Ideal Scenario: A mid-range quote with high-quality panels (e.g., SunPower, REC, Panasonic) and a strong warranty.
Step 4: Assess Equipment Quality
A. Solar Panels
Look for:
Efficiency (20%+ is premium)
Durability (25–30-year lifespan)
Tier 1 Manufacturers (LG, Panasonic, SunPower)
B. Inverters
Options:
String inverters (cost-effective)
Microinverters (better for shading, more expensive)
C. Mounting & Racking
Ensure corrosion-resistant materials (aluminum, stainless steel).
Step 5: Understand Warranties & Guarantees
A reputable installer should offer:
Panel Performance Warranty (25–30 years, 80%+ output)
Equipment Warranty (10–25 years for inverters)
Workmanship Warranty (10+ years for labor)
Avoid: Companies offering less than 10 years on workmanship.
Step 6: Verify Financing & Incentives
A. Payment Options
Cash Purchase (Highest savings, 20–30% ROI)
Solar Loans (Low interest, ownership benefits)
Leases/PPAs (No upfront cost but lower savings)
B. Incentives
A good installer will help you claim:
Federal Solar Tax Credit (30% off)
State/local rebates
Net metering programs
Step 7: Check for Post-Installation Support
Ask:
Do you handle permits and inspections?
What’s your process for repairs/maintenance?
Is monitoring included? (e.g., apps to track energy production)
Step 8: Avoid Common Solar Scams
Watch out for:
High-pressure sales tactics ("Limited-time offer!")
Unrealistic savings promises ("Zero electricity bills!")
No physical office or local presence
Checklist Before Hiring
✅ Licensed & NABCEP-certified
✅ 5+ years in business, 100+ installations
✅ Strong warranties (25+ years on panels, 10+ on labor)
✅ Positive customer reviews
✅ Transparent, competitive pricing
✅ Offers maintenance & support
Choosing the right solar installer is crucial for maximizing your investment. By following this guide checking credentials, comparing quotes, and verifying warranties you’ll avoid scams and ensure a smooth, efficient solar installation.
FAQs
How long does solar panel installation take?
Typically 1–3 days, but permitting and inspections can take weeks.
Can I install solar panels myself?
DIY solar is risky improper installation can void warranties and cause safety issues.
What’s the average cost of a solar panel system?
Between $15,000–$25,000 (before incentives) for a 6kW system.
How do I verify a solar company’s license?
Check your state’s contractor licensing board or the BBB.
What if my installer goes out of business?
Choose a company with strong financials and manufacturer-backed warranties.