Savinell and Wainright win ARPA-E grant to develop grid-scale battery

Clean renewable energy from solar or wind sounds great -- but what do you do when its dark out or not windy?  Prof. Savinell and Prof. Wainright are working on solving this problem.  They have been developing technology for cost-effective grid-scale batteries that could store energy from solar or wind for use when its dark out or not windy. Read more about this project here.