http://www.theglobeandmail.com/news/technology/science/examining-green-technologies-of-the-future/article1995125/
Page 2: Power Storage and Batteries
But there are lots of ideas out there, and some come from Canadian entrepreneurs. Electrovaya Inc., of Mississauga, has developed a large-scale lithium-ion battery that it says can efficiently store 100 megawatt-hours of electricity;