Scientists in Austria have developed a long-term energy storage system that uses regenerative braking to adjust the descent speed of sand in mine shafts and generate electricity.Researchers led by the International Institute for Applied Systems Analysis (IIASA) in Austria have suggested the use of regenerative braking to store renewable energy at decommissioned mining sites. Regenerative braking is an energy recovery mechanism that takes the wasted energy from the process of slowing down a vehicle. The proposed underground gravity energy storage (UGES) concept consists of lowering sand into an ...Den vollständigen Artikel lesen ...