The Hawaii island, Kauai, is undertaking another go-around with installing a new reformulated utility scale battery system. As a new solar farm is set to go ‘live’, the new battery system is poised to manage, for the first time ever, the lithium ion batteries. The new battery system will assist with capacity and fluctuations in power which are common problems with current systems.
http://www.technologyreview.com/news/534266/hawaiis-solar-push-strains-the-grid/