Your solar panels are supposed to generate electricity for 25–30 years with minimal intervention, but that doesn't mean they'll never need repair or maintenance. When something goes wrong—whether it's a inverter failure, reduced output, or physical damage—choosing the right repair company can mean the difference between a quick fix and months of downtime.
Ask About Licensing and Insurance
Before you hand over your system to anyone, verify they're properly licensed to work on solar installations in your state or region. Requirements vary; some states require electrician licenses, others have specific solar certifications. Ask for proof of licensing and check it against your state's licensing board online.
Insurance is equally critical. Request a copy of their liability and workers' compensation insurance certificates. This protects you if someone gets injured on your property or accidentally damages your roof during repairs. A reputable company will provide this documentation without hesitation.
What Certifications Do They Hold?
Solar repair isn't a free-for-all. Look for technicians certified by recognized bodies like NABCEP (North American Board of Certified Energy Practitioners) or manufacturers like SunPower, Tesla, or Enphase. These certifications mean they've passed rigorous exams and stay current with evolving technology.
Ask specifically which panel brands and inverter models they're certified to work on. If your system uses a Generac PWRcell inverter but they only service string inverters, they may not be the right fit.
How Quickly Can They Diagnose and Repair?
Get a clear timeline before you commit. A solid diagnosis typically takes 1–3 business days depending on weather and their workload. Ask:
- What's their average response time for emergency calls?
- Do they offer same-day diagnostics?
- How long does a typical inverter replacement take (usually 4–8 hours)?
- Will they prioritize your repair, or is it handled on a first-come basis?
Be wary of companies that can't give you any estimate. A professional will at least provide a ballpark after an initial inspection.
What's the Cost Structure?
Solar repair costs vary dramatically by problem type and region. A simple panel cleaning runs $150–$300, while a full inverter replacement ranges from $1,500–$4,500 depending on the inverter type. Service call fees typically run $75–$150 per hour, though some companies bundle diagnostics into repair pricing.
Ask if they charge separately for the diagnostic visit or if that fee is credited toward repairs if you move forward. Request a written quote for any repair before work begins. Compare quotes from at least two or three companies—Mercoly makes it easy to find and compare trusted solar repair providers all in one place.
Will They Warranty Their Work?
Reputable repair companies guarantee their labor for 12–24 months. This covers defects from their work, not the equipment itself. Equipment warranties come from manufacturers and typically last 5–10 years for inverters, 25–30 years for panels.
Ask what happens if the same problem resurfaces within their warranty period. Do they return to fix it at no charge? This detail matters far more than it sounds.
Can They Provide References?
Request contact information for at least three recent customers. Call or email them directly and ask:
- Was the technician professional and thorough?
- Did the repair actually solve the problem?
- Did the cost match the initial estimate?
- Would you hire them again?
Online reviews help, but direct references from real customers in your area carry more weight.
Do They Offer Maintenance Plans?
Some companies bundle diagnostics and preventive maintenance into annual or semi-annual plans ($200–$600 per year). These plans often catch problems before they become expensive. Ask what's included—infrared imaging to find hot spots, electrical testing, panel cleaning, and monitoring system checks are all standard components worth having.
Will They Test Your System Post-Repair?
Before they leave, the company should run performance tests to confirm your system is generating at expected levels. They should provide documented baseline performance metrics and explain what they found and fixed.
Frequently Asked Questions
Q: How do I know if my solar inverter really needs replacement versus repair? A: If your inverter is throwing error codes, your system stopped producing power despite clear skies, or it's over 10 years old and failing frequently, replacement is often more cost-effective than repeated repairs. A certified technician can run diagnostics to determine which path makes sense.
Q: What's the difference between a solar repair company and my original installer? A: Your installer may not handle ongoing maintenance; they focus on new systems. Specialized repair companies have faster response times, carry higher service call frequency, and often have stock parts available. Always ask if your installer still services existing systems.
Q: Should I wait for my manufacturer's warranty to expire before hiring a repair company? A: No—if something fails under warranty, contact the manufacturer or installer immediately. Using an unauthorized repair company during the warranty period can void coverage, so stick with approved channels first.
Start your search today by comparing certified solar repair companies near you to find the best fit for your system.