(1) Any utility requesting "standby charges" before this Commission in the future shall provide adequate data supporting "standby service" costs incurred, including but not limited to:

(a) number of customers equipped with alternative, renewable energy sources who would be affected by such charges;

(b) current costs and payback periods of the major alternative energy systems with no standby charge; current costs and payback periods of the major alternative energy systems if the standby charge as requested is authorized;

(c) for proposed standby charges for electric utility service, time-of-day and load information for the various classes of customers; and for the various energy source systems employed by them;

(d) cost of service information, including incremental cost of service information broken down by cost of service to the class of customers with unlimited use backup systems and the class of customers with backup service restricted to off-peak replenishment of energy storage systems.

(2) In accordance with the information presented in response to (1) (d) proposed standby charges must distinguish between standby customers with unlimited use of the utility's service, and those with backup service restricted to off-peak replenishment of energy storage systems.

(3) Any utility requesting "standby charges" in the future must inform the Commission of the means by which the utility intends to determine which of its customers are to be subject to the standby charge if approved.