(A) The Ohio coal research and development component equals the costs to be recovered less the costs to be refunded.
(1) Costs to be recovered: Each gas or natural gas utility for which Ohio coal research and development projects or facilities are recommended to and accepted by the commission pursuant to division (B)(8) of section 1551.33 of the Revised Code shall recover those reasonable incurred costs associated with projects for the reporting period, less any expenditures of grant moneys. The coal research and development costs to be included shall equal the reasonable coal research and development costs incurred. These costs include all reasonable costs incurred through the most recent month for which actual data is available at the time of filing the initial application allowed by paragraph (B) of rule 4901:1-12-03 of the Administrative Code and each subsequent semiannual report required by paragraph (B) of rule 4901:1-12-05 of the Administrative Code, which costs have not been included previously in the gas or natural gas company's Ohio coal research and development component as a cost to be recovered.
(2) Costs to be refunded: Each gas or natural gas utility shall refund all rents, royalties, income or other profits received by the utility as a result of the developments, discoveries or inventions, including patents or copyrights which result in whole or in part from coal research and development projects and/or facilities in proportion to the share of ratepayer financing to the project.
(B) Each gas or natural gas utility shall calculate and apply to the Ohio coal research and development rate reconciliations to correct for under-or-over-recoveries of the Ohio coal research and development component due to differences in sales volumes expected and delivered during the billing period, as well as any adjustments ordered by the commission.
(C) The Ohio coal research and development rate equals the Ohio coal research and development component plus or minus any adjustments or reconciliations, divided by the total sales of the gas or natural gas company for the six monthly billing periods commencing on or after the date one year prior to the effective date of the filing.
(D) The Ohio coal research and development rate shall be calculated on a companywide basis, and shall be expressed on a dollars and cents per Mcf basis.