JEFFERSON CITY, Missouri — The largest electric utility in Missouri will be able to charge an additional $121.5 million to its customers starting May 12.
The Missouri Public Service Commission Thursday released an updated estimate of the amount Ameren Missouri can charge customers following a rate increase.
Commission staff say the average residential customer will see an increase of $5.45 a month.
The $121.5 million increase is less than half the $264 million Ameren requested in July.
But it's higher than the $108 million estimate provided by staff Wednesday when the commissioners approved the increase.
The updated estimate incorporates other elements of that decision.
The commission also approved a reduced electric rate for a Noranda Aluminum Inc., smelter in southwest Missouri. The company says it needed the rate cut to continue operations there.