Your quote is a payback calculation the customer will check
The bill and the roof come before the price
A rooftop customer is not choosing a colour, they are running a calculation. What they want to know is how much of the bill disappears, how many years the system takes to pay for itself, and whether the roof can carry the array at all. That answer starts with two pieces of evidence: twelve months of electricity bills and a real survey of the roof — usable shade-free area, structure, tilt, the cable run to the meter. HelloGrowthCRM keeps both on the enquiry with the survey photographs attached, so whoever builds the proposal is not phoning the surveyor to ask what the terrace looked like.
Show your assumptions, because the rival quote will not
Two proposals quoting the same kilowatts can differ by lakhs, usually because one assumed a generation figure that roof will never see. If your numbers are honest, showing the working is an advantage. Keep the units you assumed, the tariff you used and the shading you allowed for on the deal record, so the salesperson answering a call three weeks later gives the same answer the proposal did. When the customer comes back with a cheaper rival quote, you can point at the specific assumption that differs instead of arguing about price and discounting to stay in the running.