What a complete solar quote should list
A full quote should be itemized and clear. Look for: - Total system size in kilowatts (kW) and number of panels. - Exact equipment models (panel make/model, inverter type/model, battery make/model if included). - A modeled production estimate with the assumptions used (location, tilt, orientation, and shading). - A line‑item cost breakdown: equipment, labor, permits, interconnection, inspections, and any taxes or fees. - Financing details if offered: what’s included in the financed amount and how monthly payments are calculated. - How incentives and tax credits are handled and whether the installer will assign or pass through any rebates. - Warranties listed separately: manufacturer warranties (panels, inverter, battery) and installer workmanship warranty — with duration and who is responsible for claims. - Project timeline and major milestones (permit submission, install window, inspections, utility interconnection). - Site plan or layout showing panel placement and a shade analysis or irradiance map. - Ongoing monitoring, maintenance offerings, and who handles performance issues. - Exclusions and contingencies: roofing work, tree trimming, structural upgrades, or unexpected costs. - Cancellation, transfer, and dispute resolution terms. If anything is vague or missing, ask for clarification before signing.
How to compare quotes fairly
Apples-to-apples comparison matters. Key comparison points: - Cost per watt ($/W) helps compare scale, but check what’s included in that number. - Estimated annual energy production; compare the model assumptions (roof angle, shading, and system losses). - Net cost after incentives — ask how rebates and tax credits are applied. - Equipment quality: compare panel efficiency, inverter type (string, microinverter, or power optimizer), and battery chemistry if present. - Warranties and who backs them: manufacturer coverage differs from installer workmanship coverage. - Installation approach: homeowner-installed racking, roof penetrations, and whether a roofer is involved. - Financing terms: compare total financed amount, interest rate, term length, and any fees. - Service and monitoring: who answers if production drops, and are performance guarantees included? Keep in mind that local factors — your roof, utility rates, and shading — affect production and economics, so a lower headline price isn’t always the best value.
Questions to ask and red flags to watch for
Ask installers these practical questions: - Who will perform the work — the company’s crews or subcontractors? - Can you see the full contract and equipment spec sheet before committing? - Who handles permits, utility applications, and inspections? - How are incentives and tax credits handled? - Can you get references from recent customers in your area? Watch for these red flags: - Vague production estimates with no stated assumptions. - Missing or lumped costs with no line-item detail. - High-pressure sales tactics or requests for large deposits before permits. - No clear warranty documentation or an installer who can’t explain how claims are handled. - Guarantees of a specific dollar savings without showing the assumptions behind that claim. If a quote omits basic items on this page, ask for an updated, itemized version before proceeding.
Practical next steps before requesting quotes
A little prep makes quotes easier to compare: - Gather 12 months of utility bills or a recent yearly usage summary. - Note your roof’s age and any planned roof work. Installers may need to know if roof replacement is likely soon. - Photograph your roof from the ground and note trees or nearby shading during peak sun hours. - Decide if you want batteries or just a grid‑tied system so installers quote comparable systems. - Ask for at least three written quotes from different local installers, including national names like Sunrun, Freedom Forever, or ION Solar if they operate in your area. - Use a short checklist to make sure each quote includes the items listed above. Comparing the same equipment and assumptions makes it easier to judge tradeoffs between price and quality.