D.M. GreenwoodK.Y. LimC. PatsiosP.F. LyonsY.S. LimP.C. Taylor2025-01-022025-01-022017-1010.1016/j.apenergy.2017.06.046https://dspace-cris.utar.edu.my/handle/123456789/9792Frequency response services designed for energy storagejournal-article