Checklist
Proposals
Questions to ask before signing a solar contract
A short list of homeowner-facing questions that separate a well-structured Colorado solar proposal from a marketing brochure.
Financial questions
Cash price. Total financed price. Dealer fee percentage. APR. Escalator. Federal tax-credit assumption.
System questions
System size (kW-DC). Year-one production (kWh). Modeled tool used. Assumed shading factor.
Utility questions
Which utility. Which rate schedule. Interconnection timeline the installer is currently seeing.
Warranty questions
Module product and performance warranties. Inverter warranty. Workmanship warranty. Roof-penetration warranty.
Exit questions
Cancellation window. Transfer-on-sale terms. What happens if the installer goes out of business.
Last reviewed 7/11/2026 · See our editorial policy and corrections policy.