Key parties in the case have asked state regulators to order Duke to refile all its work papers and exhibits, with formulas and linked spreadsheets.
Read MoreIt’s an unusual rebuke from the Utility Consumer Counselor Bill Fine, who often recommends that state regulators cut a utility’s proposed rate increase, but rarely says the entire hike should be denied.
The ruling is a setback for consumer activists and customer groups, who say Duke Energy’s application to raise electricity rates by an average of 15% is incomplete and confusing.
The utility says it wants to keep most of its coal-fired plants in Indiana running through much of the next decade, while gradually investing in wind, solar and other renewable energy sources.
The utility had wanted to build the gas-fired plant to replace aging coal-burning units, but regulators said the plan was too risky and inflexible.
The utility is seeking a nearly 17 percent rate increase to help pay for more than $542 million of infrastructure investments.
Indiana Utility Consumer Counselor Bill Fine is tasked with making sure Hoosier households and business aren’t overcharged for electricity, natural gas, water or wastewater.
Indianapolis Power & Light has agreed not to raise the fixed monthly rate it charges most of its residential customers, under a rate-case settlement it reached with the Indiana Office of Utility Consumer Counselor and other stakeholders.
Gov. Eric Holcomb on Monday appointed former state representative David Ober to an open spot on the Indiana Utility Regulatory Commission and promoted interim IURC chairman Jim Huston to chairman.
The utility is asking state regulators for permission to increase the “fixed charge” on its 490,000 customers from $17 to $27 a month, and increase energy-usage charges also.
The five-person commission regulates $14 billion in electric, natural gas, telecommunications, water and sewer utilities. It approves utility projects and determines how much utilities can charge customers.
James Atterholt, appointed chairman of the Indiana Utility Regulatory Commission in February, will step down next month, saying his wife has been offered a job transfer to Florida.
Jim Atterholt, a former lawmaker, most recently served as chief of staff to former Gov. Mike Pence. He is returning to the Indiana Utility Regulatory Commission, where he previously served as chairman.
The appointee, Bill Fine, held an Indiana House seat representing northwest Indiana before losing the seat in the November election.
As IPL ditches coal in favor of natural gas at power plants in Indianapolis and Martinsville, the utility wants to close their coal ash pits, cover the tops with plastic membranes, and top them off with nearly three feet of sand and soil.
Gov. Mike Pence’s chief of staff, who will lose his position when Pence leaves office on Monday, is seeking to return to the five-member state commission that oversees utilities.
The utility says the move would allow it to keep burning coal at the Pike County plant and meet strict environmental regulations for sulfur dioxide and coal ash.
Gov. Mike Pence on Friday named Sarah Freeman as a commissioner on the five-member Indiana Utility Regulatory Commission.
A bitter, costly fight over who will pay for Duke Energy’s $3.5 billion coal-gasification plant, one of the most expensive projects in Indiana history, is finally over.
The Indiana Utility Regulatory Commission hears hundreds of cases a year and regulates $14 billion worth of electric, natural gas, telecommunications, steam, water and sewer utilities.
Indianapolis-area residents will see their monthly sewer rates increase by 30 percent over the next year after state regulators approved a plan Tuesday to fund improvements to the aging system.