Malcolm Turnbull says Snowy Hydro plan will outdo South Australian battery storage

PM says plan would turn Snowy Hydro into energy storage system but Labor says proposal leaves unanswered questionsMalcolm Turnbull has used his expansion plans for the Snowy Hydro to try to outdo South Australia on battery storage, saying it would provide 20 times the capacity of the battery system proposed by the premier, Jay Weatherill.The prime minister visited the Snowy Hydro power station on Thursday to spruik the benefits of the expansion plan on the same day his energy minister, Josh Fryd