What a solar quote should actually show
A useful quote breaks the project into clear pieces. Look for: system size (kW), a predicted annual energy production with assumptions stated, brand and model of panels and inverters, a line-item price breakdown (equipment, labor, permits, inspections), and who is responsible for permits and interconnection. It should say who will install the system, what warranties are included and whether they come from the manufacturer or the installer, and an estimated timeline from permit to commissioning. If the proposal doesn’t explain these things, ask for an itemized version before you compare numbers.
How to compare quotes without getting misled
Quotes can look different for reasons that aren’t about quality. Common mismatches include different system sizes, different production assumptions, or one quote including roof work while another does not. Compare on common ground: use the same target annual production or the same system size, and ask how production was modeled (tilt, orientation, shading, and weather data). Check equipment specs rather than brand names alone: panel efficiency, inverter type, and installation details matter. Also compare who is responsible for maintenance and repairs, and whether the proposer is the installer or a broker. Include both national companies (like Sunrun, SunPower, Sunnova) and reputable local installers so you can weigh service and price.
Where homeowners get confused in the sales process
Several sales-stage issues cause trouble: unclear ownership or financing terms, unexpected change orders, and vague statements about performance. High-pressure timelines or urgent incentives can push you to sign before you get a clear itemized proposal. Watch for quotes that rely on assumed utility rate structures or future savings without showing the math. Also ask who will be on your roof, how roof repairs will be handled, and what happens if the production estimate falls short of expectations. If anything in the contract is vague, ask for plain-language clarification before you sign.
Questions to ask before you request firm quotes
Use this short checklist when you request formal proposals: 1) Can you provide an itemized proposal and a site plan? 2) How did you calculate the production estimate and what assumptions did you use? 3) What exact panels and inverters will you install (model numbers)? 4) Who will be the installer on site and are they employees or subcontractors? 5) Who handles permits and interconnection filings, and are those costs included? 6) What warranties are included, who issues them, and what do they cover? 7) What is the schedule from permit to turn-on, and what are payment milestones? 8) Ask whether the quote expires and what could cause price changes. Bringing these questions to every company makes it easier to compare true value, not just sticker price.