The 10 Stories That Defined Energy Storage in 2017

The industry stepped up with two major, high-speed deployments to resolve grid emergencies. Utility-scale projects got bigger and longer lasting. Major international conglomerates bought up storage startups. And all the major solar developers started getting into the game. Much of the action remained at the pilot stage. But some projects showed that storage economics already make sense without subsidies, grants or other interventions -- in the right circumstances, of course.