The Additional Capacity Charge billing component is a base rate charge, applied per kilowatt of a Demand Rate customer’s Additional Capacity Requirement, by rate class.
The Additional Capacity Requirement is the largest monthly peak demand (in kilowatts) for the customer’s service recorded over a rolling, 24-month period.
For customers on Demand Rates, the Additional Capacity Charge provides for the costs of CUC’s reserve generation, transmission and distribution infrastructure, by rate class.
For more information about CUC billing rates see, Billing Rates.