Utility Dive: DOE energy storage grants look to the day when renewables rule the grid Oct 15, 2018 | News Roundup https://bit.ly/2ymds8s Oct. 9 — DOE program aims at low cost, long duration storage to meet grid needs when renewable penetration rises above 50%. — Utility Dive Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website