How to Choose a Solar Installer in 2026: 7 Questions to Ask

The panels matter less than who installs them. A great installer with mid-tier equipment will serve you better for 25 years than a fly-by-night crew with premium panels. In 2026, with a lot of solar companies churning, picking the right installer is the most important decision you'll make. Here are the seven questions we'd ask.

1. How long have you been in business — under this name?

Solar companies rebrand to shed bad reviews. Ask how long they've operated under their current name, and check reviews for that exact name.

2. Who actually does the install — employees or subcontractors?

Subcontractor crews aren't automatically bad, but you want to know who's accountable if something leaks or fails.

3. What's the workmanship warranty — and who backs it?

Panels carry 25-year manufacturer warranties, but the workmanship warranty (the roof penetrations, wiring, labor) is what protects you if the install itself has a problem. Get the length and who honors it in writing.

4. Will you pull permits and handle the utility interconnection?

The answer should be an unambiguous yes. Permitting and interconnection are where DIY-ish outfits stall for months.

5. What's the production guarantee?

A reputable installer estimates annual kWh and stands behind it. Be wary of inflated estimates designed to make savings look bigger (we cover that in how to read a solar quote).

6. Cash price vs financed price?

Always get both. The gap reveals the dealer fee buried in $0-down financing.

7. Can I talk to a customer you installed 2+ years ago?

Anyone can look good on install day. References from a couple of years back tell you how they handle service.

The shortcut

This is exactly what we do as an independent broker — we vet installers, compare their real quotes, and steer you away from the ones that don't pass these questions. Get a free quote and we'll do the vetting for you.

🧮 Got a solar quote? Use our free Solar Quote Calculator to instantly check whether your price per watt is fair for your state — then get a free, independent review before you sign.