Nature and EnvironmentThe search for renewables storage goes undergroundTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoNature and Environment04/09/2016April 9, 2016The drive to find storage solutions for surplus power generated by renewables has led German scientists to explore the possibility of using defunct coalmines. The innovative idea is to set up factilities that would act like giant batteries.https://p.dw.com/p/1IRNUAdvertisement