10 Questions to Ask Before Signing a Solar Contract
A solar contract is a five-figure, decades-long commitment. Before you sign, these ten questions surface almost everything that matters — and flush out the red flags. Bring them to every quote.
1. What’s the total price and the price per watt?
Get the all-in price and the $/watt so you can compare quotes fairly. See how much solar costs.
2. What exact equipment will you install?
Specific panel and inverter brands and models — not “premium panels.” Equipment quality affects performance and warranty.
3. How big is the system, and how did you size it?
System size in kW and the annual kWh it’s expected to produce. Confirm it matches your actual usage — see how many panels you need.
4. What does each warranty cover, and for how long?
Panels, inverter, performance, and workmanship — and crucially, who backs the workmanship warranty. See solar warranties explained.
5. What happens if your company goes out of business?
A fair question in 2026. Ask who honors the workmanship warranty and monitoring if they close or are acquired. See what happens if the installer goes bankrupt.
6. Who actually does the installation?
Your crew or a subcontractor? Are they licensed and insured in your state? Get the license number.
7. What are the full financing terms?
If buying with a loan or signing a lease/PPA, ask the interest rate, term, any dealer fees, and especially any annual escalator that raises payments over time. Compare structures in lease vs buy vs PPA.
8. Which incentives apply, and are they guaranteed?
Have them itemize incentives — and verify independently. Be skeptical of anyone implying the expired federal purchase credit applies to a 2026 purchase. See solar incentives in 2026.
9. What are my net-metering terms?
How your utility credits exported power shapes your savings. See net metering explained.
10. What’s covered after install — monitoring, service, roof?
Who provides monitoring, how service calls work, and whether the workmanship warranty covers roof leaks from the installation.
Red flags while you ask
- High-pressure “today only” pricing
- Refusal to put answers in writing
- Vague equipment or incentive claims
- A price far below all other quotes
More on vetting installers: how to choose a solar installer.
Bottom line
Get clear, written answers on price, equipment, sizing, warranties, financing, incentives, and what happens if the company fails. A reputable installer will answer all ten without flinching. If they dodge or rush you — walk.
Educational information only, current as of June 2026. Always read the full contract and consider independent advice before signing.