Alliant Energy is asking the Iowa Utilities Board for an increase in electric utility rates effective Jan. 1.
The requested increase in annual revenues for all customer classes combined is about $203.6 million or 11.7 percent.
Alliant customers recently received a notice of the proposed rate increases including the estimated impact on various customer classes.
The increase for residential customers is 24.45 percent. A residential customer with a typical monthly bill of $82.31 in 2018 would see an increase to $102.
The increase for a large general service customer would be 25 percent. A general service customer with a $7,405 monthly bill would see their monthly bill increase to $9,278 if the increases are ap proved.
A “standby and supplementary power service” customer would see a 29 percent decrease in their monthly bill from $208,835 to $147,967.
The Iowa Utilities Board will review the requested increases within 10 months and establish final rates which may be different than the rates proposed by the company.
In addition to setting the rate, the IUB also will determine when final rates will become effective.
Customers can object to the proposed increase with the IUB and request a public hearing. Written objections or requests can be submitting online to the IUB at efs.iowa.gov, by emailing customer@iub.iowa.gov or mailing Iowa Utilities Board, 1375 E. Court Ave., Des Moines, IA 50319.

Customer comments
Customer comment meetings on the rate increases are being held throughout the state.
Thursday, May 2, a customer comment meeting is scheduled at 6 p.m. at the Hotel Winneshiek in Decorah.
The IUB is encouraging customers to attend the meetings because they provide the best opportunity to provide feedback directly to the Board and other parties involved in the rate case.
Alliant’s current and proposed rate schedules and other information are available at alliantenergy.com/iowarates.