MidAmerican Energy To Install Battery Storage System

MidAmerican Energy Company announced late last week they will be building an energy storage system to serve Iowa homes. The project uses batteries to provide four megawatt-hours of storage capacity, supplying one megawatt of power for up to four hours. That one megawatt is enough energy to power about 900 average homes. The two truck-sized steel containers needed to house the lithium-ion phosphate battery system will be located at MidAmerican’s Knoxville substation, and will be installed by Chicago-based Invenergy. “This innovative project will help us learn how best to use an energy storage system, and how it can serve our customers in the future,” says Mike Fehr, Vice President of resource development for MidAmerican Energy. “Energy storage has the potential to allow us to retain energy when customer demand is low and release it during peak usage times. That would give us new options to manage peak loads, enhance overall reliability and help keep electric costs low and affordable for our customers,” Fehr explains.