Ontario’s Largest Electricity Producer Pairs with World Leader in AI-Powered Energy Storage Systems MILLBRAE, Calif. and TORONTO, Nov. 14, 2018 (GLOBE NEWSWIRE) -- Stem, Inc. , and Ontario Power Generation (OPG) are launching a new partnership on advanced energy storage systems that will assist Ontario industrial manufacturers in managing electricity costs. In bringing together one of the most experienced energy providers in Ontario, OPG, and the most advanced energy storage systems and...