(1) Each electric utility must use the annual report form (FERC Form No. 1) promulgated by the Federal Energy Regulatory Commission in Title 18 of the Code of Federal Regulations, Part 141, for purposes of this report to the commission. Data required by RCW 80.04.080 (Annual reports), but not included in the FERC Form No. 1, must also be submitted with the annual report. The utility must submit the annual report for the preceding calendar year, along with the regulatory fee, by May 1st of each year. If not presented in the prescribed FERC Form No. 1, the annual report must include the following data per customer class for the calendar year: Revenues, average customer count, and total unit sales. Information about the FERC Form No. 1 regarding the version adopted and where to obtain it is set out in WAC 480-100-999 (Adoption by reference).

(2) Each utility must also submit to this commission, in essentially the same format and content as the FERC Form No. 1, a report that documents the costs incurred and the property necessary to furnish utility service to its customers and the revenues obtained in the state of Washington. The report must include the following data per customer class for the calendar year: Revenues, average customer count, and total unit sales.

(3) Combination and multistate utilities must submit with the annual report their cost allocation methods necessary to develop results of operations for the state of Washington. Approval of cost allocation methods for rate-making purposes is accomplished only by commission order.

(4) The total utility results of operations reported by each utility in its annual report to the commission must agree with the results of operations shown on the utility's books and records.

(5) Regulatory fees. The electric utility annual regulatory fee is set by statute at one-tenth of one percent of the first $50,000 of gross intrastate operating revenue plus four-tenths of one percent of any gross intrastate operating revenue in excess of $50,000.

(a) The maximum regulatory fee is assessed each year, unless the commission issues an order establishing the regulatory fee at an amount less than the statutory maximum.

(b) The minimum regulatory fee that an electric utility must pay is $20.

(c) The $20 minimum regulatory fee is waived for any electric utility with less than $20,000 in gross intrastate operating revenue.

(d) The commission does not grant extensions for payment of regulatory fees.

(e) If a company does not pay its regulatory fee by May 1st, the commission will assess an automatic late fee of two percent of the amount due, plus one percent interest for each month the fee remains unpaid.