Most people wait until something breaks before calling a solar installer. That's usually the worst time to shop around. A little research upfront saves a lot of hassle.
Licensing & Insurance Questions
Ask for their state contractor license number right away. Look it up on your state's licensing board website to confirm it's active and has no recent complaints. Don't skip asking for proof of general liability insurance and workers' comp. If a worker gets hurt on your roof and they don't have coverage, you're on the hook.
Experience & References Questions
Find out how many residential solar systems they've personally installed. Someone who has done five is a rookie. Someone with over a hundred knows the common roof types and electrical panels in your area. Ask for three recent customer references — not their cousin, not a buddy, actual customers. Call them. Ask if the crew showed up on time, if the system actually produces what was promised, and if any leaks happened.
Pricing & Timeline Questions
Get at least three written quotes. If one quote is far cheaper than the others, there's a reason. Cheap often means cut corners or no insurance. Ask about the timeline in writing. A straightforward install on a basic roof should take two to three weeks from permit approval. If they say six months, they might be booking jobs they can't staff.
Contract Questions
Read the whole contract before signing. Look for the section that says what happens if the system underperforms. Make sure it lists the exact panel model and inverter brand, not just 'premium panels.' Check for a clause about roof leaks — a good contractor will repair any leak caused by their work for at least a year. Never sign a contract that requires full payment upfront.
Do your homework first, then compare local solar installers on RatingsNearMe.