Verify Credentials & Experience

 Before hiring a solar installer, check their licensing, certifications, and experience. A reputable company should hold a state contractor’s license and certifications from organizations like NABCEP (North American Board of Certified Energy Practitioners) the gold standard in solar installation. Manufacturer certifications (e.g., Tesla, SunPower) are also a plus, ensuring they’re trained to handle specific equipment. Experience matters look for installers with 5+ years in business and 100+ completed installations. Ask for references and case studies to confirm their expertise with your roof type (tile, metal, or flat). Avoid unlicensed or newly established companies, as they may lack the skills to handle complex installations, leading to system failures or voided warranties.  

Compare Quotes, Equipment & Warranties 

Always get at least 3 to 5 quotes to compare pricing, equipment quality, and warranties. A detailed quote should include system size (kW), estimated energy production (kWh/year), panel and inverter brands, and warranty coverage. High-quality solar panels (like SunPower, LG, or REC) should have 25 to 30 year performance warranties, while inverters (microinverters vs. string inverters) should have 10 to 25 year coverage. The installer should also offer a 10+ year workmanship warranty to protect against installation errors. Be wary of extremely low bids, which may indicate subpar materials or inexperienced labor. Instead, opt for a mid-range quote with Tier 1 solar panels and strong warranties for long-term reliability.  

Research Reviews & Avoid Common Scams

Customer reviews reveal a lot about a solar installer’s reliability. Check Google Reviews, BBB ratings, and solar-specific platforms like EnergySage or SolarReviews for unbiased feedback. Look for patterns consistent complaints about leaks, delays, or poor customer service are major red flags. Additionally, avoid high-pressure sales tactics, such as "limited-time discounts" or promises of "free solar." Legitimate installers provide transparent pricing and give you time to decide. Another scam to watch for is companies with no physical office or local presence always verify their address and ask for local references. A trustworthy installer will have a strong community reputation and be familiar with your area’s permitting and utility requirements.  

Ask About Post-Installation Support & Financing

A great solar installer doesn’t disappear after installation they offer ongoing support, maintenance, and monitoring services. Ask:  

Do you handle permits and inspections?  

What’s your process for repairs or system upgrades?

Is energy monitoring software included? 

Additionally, explore financing options (cash purchases, solar loans, or leases) and ensure the company helps you maximize incentives like the 30% federal tax credit, state rebates, and net metering. Companies that assist with financing and incentives demonstrate long-term commitment to customer satisfaction. By following this solar installer checklist, you’ll choose a qualified, trustworthy professional and enjoy a smooth, hassle-free solar experience.  

Download or print this checklist before meeting with installers to ensure you ask the right questions and make an informed decision. Ready to go solar? Get free quotes from top-rated installers today! 

FAQ Section

How do I verify a solar installer’s license?

Check your state’s contractor licensing board or the Better Business Bureau (BBB).  

2. What’s the most important warranty in a solar installation?

A 10+ year workmanship warranty is crucial it covers installation errors.  

3. Can I negotiate solar installation costs?

Yes, but prioritize quality over price cheap installers often cut corners.  

4. How long does solar panel installation take?

Installation takes 1 to 3 days, but permitting and inspections may add weeks.  

5. What if my installer goes out of business?

Choose a company with manufacturer-backed warranties for long-term protection.