Renewable energy developer Invenergy has initiated commercial operations of a utility-scale battery storage system located in Knoxville, Iowa, for MidAmerican Energy.
The 4 MWh lithium-iron phosphate battery system is housed in two truck-sized steel containers at a MidAmerican Energy substation.
The utility can use the system in concert with wind and solar power generation, by storing energy produced when wind speeds and sun exposure are high and using it later. MidAmerican Energy owns an expansive portfolio of wind-powered generation capacity.
This is the fifth utility-scale advanced energy storage project Invenergy has developed, and the first where the company acted as the engineering, procurement and construction (EPC) provider.
“We are excited by the new opportunities for battery storage that we are seeing around the country,” said Kris Zadlo, senior vice president responsible for storage development at Invenergy.
