(2) When the order applies to a consumer-owned utility, the order shall also provide for payment by the parties of the cost of the hearing. The payment shall be made in a manner which the commission considers equitable. [1979 c.356 §5; 1983 c.251 §1; 1987 c.414 §165; 1989 c.5 §6; 1999 c.832 §6]