Alliant EnergyCorp. senior vice president and CFO Thomas Hanson plans to retire Dec.31, according to a Sept. 23 news release.

In response to his retirement, Alliant Energy named Robert Durianas vice president, CFO and treasurer, effective Dec. 1. On the same date, companycontroller Ben Bilitz will take on the additional role of chief accounting officer.

Durian currently holds the roles of vice president, chief accountingofficer and treasurer.