SIOUX COUNTY, IA (KTIV) - Developers, who are looking to build a data center about 2 miles southwest of Hull, Iowa, told the Sioux County Board of Supervisors on Tuesday that an end user had been secured before the county’s moratorium on new data centers took effect last week. The Sioux County Board of Supervisors approved a one-year moratorium on new data centers and battery energy storage systems in the county’s unincorporated areas earlier this month.