BISMARCK, N.D. (AP) - North Dakota's Public Service Commission has approved a 3.9 percent rate increase for natural gas used by customers of Montana-Dakota Utilities Co.
The three-member commission unanimously approved an order Monday that allows MDU to bring in $4.2 million of additional revenue each year.
The Bismarck-based utility says it has made about $100 million in investments to its natural gas infrastructure since 2004 and the increase is needed to help recover the costs.
The utility has about 99,000 North Dakota customers.
The PSC is slated to set the rates on customers' natural gas bills next month to reflect the increase. MDU has proposed an increase of $2.72 monthly on a typical residential customer's natural gas bill.
MDU says its last natural gas rate increase was in 2004.