An error has been discovered on some utility bills from the City of Coffeyville.  The error could show a higher electric bill than what it should have been for some electric customers. 

 The customer service department discovered the error after bills had already been mailed out. A monthly power cost adjustment of $0.07144 kilowatt hours was incorrectly input into the system rather than the correct rate of $0.0054 kilowatt hours. City Manager Mark Hall says they will work with those customers affected.

 New, corrected bills are being sent out to the affected customers and the due date has been extended to June 15th.

 The City apologizes for the human error and is implementing processes to prevent such mistakes in the future.