Indiana Code Title 36. Local Government § 36-9-31-24

Sec. 24. An energy byproduct of a facility may not be sold to a person already being served the same type of energy by a public utility subject to regulation by the utility regulatory commission;  however, an energy byproduct of a facility may be sold to a person who:

In the case of a new facility that is not served the same type energy by the public utility, the energy byproduct must first be offered to the public utility upon the same terms and conditions agreed to in good faith, by the person who constructs the new facility.  If the public utility fails to accept, in writing, the purchase of the energy byproduct upon those terms and conditions within forty-five (45) days after the date the offer is made to the public utility, then the energy byproduct may be sold directly to the person by the facility.