Not later than October 1, 2004, each municipal electric utility, including any participating municipal electric utility, as defined in section 16-1, shall, in consultation with the municipal electric energy cooperative established under chapter 101a, set, pursuant to section 7-222, a rate for the interconnection of generation facilities into its transmission and distribution system, which generation facilities are located in the service territory of the municipal electric utility and began operations after June 26, 2003.