13-52-501. Customer financial obligations.,
(1) A customer shall pay, on the date provided in the solar agreement, the costs of the solar energy system's: design, not to exceed the greater of $1,500 or 3% of the total cost of the solar agreement; equipment procurement, not to exceed 25% of the total cost of the solar agreement; and installation, not to exceed 80% of the total cost of the solar agreement inclusive of payments due in accordance with Subsectionsand (1)(b). (1)(a) A solar retailer may not collect the remaining balance of the solar agreement from a customer until the residential solar energy system is producing usable energy.