Honeywell and DTEK are joining forces to develop Ukraine’s first grid-scale energy storage system. In a pilot program, the US company will supply its 1 MW lithium-ion energy storage batteries for DTEK to use at its Zaporizka thermal power station in Enerhodar, Ukraine’s largest thermal power plant. These massive batteries will function as operating reserves managing frequency fluctuations on the grid and charging up during off-peak times and discharging when energy demand increases.