On February fifteenth of each year, each retail company on behalf of itself and its wholesale power supplier shall file with the secretary of revenue on forms prescribed by the secretary a report of the number of kilowatt hours of retail and wholesale electric energy subject to taxation pursuant to this chapter apportioned to each county and school district in proportion to electric energy delivered at retail. The report shall be sworn to and verified by an officer of the retail company.
SDCL 10-36-5