The fee due each year to a department for the occupation of the departmental public domain by the works of the public electricity transmission and distribution networks is set by the departmental council within the following annual ceiling:
PR = (0.045 7 P + 15,245) euros,
where P represents the sum of the populations without double counting of the communes in the department as they result from the latest census published by INSEE.
The ceilings for the fees mentioned in this article change on 1 January each year, in proportion to the change in the engineering index, defined in the Journal officiel of 1 March 1974, measured over the twelve months prior to the publication of the index known on 1 January.