Report: Storage boom to rival solar as battery prices drop 40-60% by 2020

http://www.utilitydive.com/news/report-storage-boom-to-rival-solar-as-battery-prices-drop-40-60-by-2020/403411/

Energy storage ‘megashift’ ahead, battery costs set to fall 60% by 2020

http://reneweconomy.com.au/2015/energy-storage-megashift-ahead-battery-costs-set-to-fall-60-by-2020-2020