The energy holding firm plans to build its second energy storage system with a capacity of 50 MW next year, said the Executive Director of DTEK, Dmytro Sakharuk. Previously, DTEK had launched an industrial energy storage system which was produced by Honeywell, and had the capacity of 1 MW and a capacity of 2.25 MWh at the site of DTEK Zaporizhia TPP in Energodar.