This is promising to see. At Hyperion we already work with a NYC based energy storage start up, building their team. We've also just started working with Boston based Google incubated and Bill Gates funded long duration energy storage company Malta Inc.

Long duration storage has also been the topic for the last two 'This week in cleantech' Podcasts, with CEOs Javier Cavada (Highview Power) and Ramya Swaninathan (Malta Inc) on the last two episodes. Link here http://thisweekincleantech.com/