renewable power standard

Minnesota Study Finds Promise in Using Abandoned Mesabi Iron Range Mines to Store Wind Energy

There’s promise in reclaiming abandoned open pit iron ore mines in Minnesota’s Mesabi Iron Range and reusing them to store energy from wind turbines and farms. Utilities, industry and government are increasingly looking at hydroelectric pumped storage as an efficient, clean means of making more use and better managing growing amounts of intermittent electrical power being produced from wind energy.