The Iowa Utilities Board (IUB) has approved a five-year, $256 million energy efficiency plan for 2019-23 for MidAmerican Energy Co. to carry out 14 energy efficiency and demand response programs estimated to provide $41 million in gas utility customer benefits and $709 million of electric benefits. The IUB also has scheduled 10 public meetings from April 11-May 23 for Alliant Energy’s Interstate Power and Light Co. in Iowa for a yet-to-be-filed rate increase request for both its retail gas and power operations in Iowa.