Can wind power be stored?
Development of large-scale storage for utility-scale renewable energy is still in its early stages. At present, electrical storage systems exist, but they are very expensive. Other storage methods, like pumped storage hydro, are also costly and need the right physical locations that may not be available. Part of the discussions among Hawaiian Electric, First Wind Hawaii and Castle & Cooke will be how best to store and smooth the electricity supply to assure reliability for all customers.
