Developing technologies to store energy so the power grid can meet demand represents a major challenge in electricity distribution and a necessity for utilities facing a state mandate to get a third of their energy from renewable sources by 2020. CleanTALK San Diego, in partnership with PROVEN Inc., CleanVenture, and the Charged2020 conference, is hosting Terry Mohn of Balance Energy to discuss a sustainable energy future, cutting-edge technologies, and business challenges. Business leaders, scientists, and entrepreneurs are encouraged to attend. More information and online registration is here.