permit applications Developers of 99.9-MW Glyn Rhonwy pumped-storage project withdraw permit applications By feedproxy.google.com Published On :: 2016-06-28T13:51:00Z Hydroelectric power developer Snowdonia Pumped Hydro has withdrawn its application for environmental permits for the 99.9-MW Glyn Rhonwy pumped-storage plant from Natural Resources Wales. Full Article Baseload Storage