What “free” usually covers — and what it might not
Most companies will give you a no-cost estimate of system size, production and price after a site visit or by using satellite data. But “free” doesn’t always mean the same level of detail. Some estimates are quick ballpark figures; others include a full design, equipment list and financing examples. Also expect follow-up calls or emails from sales teams. A free quote is a starting point — not a final contract — and it won’t lock in price or incentives until a signed agreement and permit approvals are in place.
Key things to compare across quotes
Ask every company for the same basic information so you can compare like with like: system size in kilowatts, estimated annual production, itemized equipment (panel and inverter brands), labor and permit costs, and any assumed incentives. Also compare who is responsible for installation and warranty service — manufacturer warranty differs from the installer’s workmanship guarantee. Financing is part of the quote: make sure you know whether the number is a cash purchase, loan, lease or power agreement, and request simple examples of monthly payments. Finally, check timeline milestones (site assessment, permitting, install, inspection) and whether the installer uses subcontractors.
How to read tradeoffs in a quote
Lower upfront cost can mean cheaper panels, a smaller system, or shorter warranties — tradeoffs that affect long-term performance and service. A higher quote might include better equipment, extended labor coverage, or more thorough permitting and paperwork handling. Company size matters differently: large firms such as Sunrun, Sunnova and Palmetto Solar may offer national customer service and financing options, while local installers can be easier to reach for service. Weigh price against equipment quality, the installer’s reputation, and how clearly the quote explains expected production and responsibilities.
Practical steps before you request multiple quotes
Start by gathering your recent utility bills and noting any roof issues. Ask each installer to use the same production target (for example, percentage of current electricity use) so quotes match on goals. Request an itemized written quote and a rough timeline. Check contractor license, insurance, and local reviews or references. If financing is presented, ask for an example of monthly payments and total paid over the contract term. Finally, compare at least two or three written quotes to see real differences rather than relying on a single pitch.