In September 2023, NIPSCO filed with the IURC to charge customers at least $641.2 MILLION to build a new dirty fossil gas peaker plant that will operate less than 20% of the year. The projected $641.2 million price tag is an estimate; NIPSCO indicates the cost of the plant could increase by as much as 30%.

Indiana's electric and gas utilities have the unique privilege of being monopolies, which means they are shielded from competition. In exchange for this privilege, investor-owned utilities are regulated by the Indiana Utility Regulatory Commission (IURC).