D.C. Mun. Regs. tit. 15, § 399
399.1 When used in this chapter, the following terms and phrases shall have the meaning ascribed:
Billing Month - the utility service period of twenty-six (26) to thirty-five (35) days.
Consumer - a user of residential utility service.
Consumer Services Division - the staff of the Commission designated to perform responsibilities in accordance with this chapter.
Customer - a purchaser of residential utility service.
Cycle Billing - a system in which bills are rendered to different customers on different days of the month.
Deferred Payment Agreement - an agreement whereby a customer pays a delinquent account on an installment basis while service continues.
Delinquent Account - an account that is unpaid twenty-one (21) days or more after the bill is rendered.
Estimated Bill - a gas or electric bill for utility service which is not based on a meter reading by the utility or customer.
Fuel Adjustment Charge (FAC) - the provision in the electric utility's rate schedule that provides for a charge on the bill for the net cost of fuel and interchange transaction per kilowatt hour of total energy sales which may vary from month to month.
Purchased Gas Adjustment (PGA) - the provision in a gas company's rate schedule which permits the adjustment of the amount of the bill as the cost of gas varies from a specified base amount per unit.
Residential Service - gas or electric service to a separately metered household, and including gas service to not over three families served by a single meter in a multiple-family dwelling, or portion thereof; telephone service to an individual, family or group for nonbusiness purposes.
SOURCE: Final Rulemaking published at 25 DCR 10381, 10389 (June 1, 1979).