A team that Xergy Consulting has assisted since last year continues to make strides in bringing innovative forms of energy storage to buildings and to the grid. This article in Chicago Business profiles founder and entrepreneur Vince Cushing on Q Coefficient (formerly Clean Urban Energy). Though the author is a bit vague on the technical details, it is still a worthwhile read.
Q Coefficient takes building precooling in a much more sophisticated direction than any other operation I am aware of, taking factors like dynamic electricity prices, weather, and occupant comfort into account through detailed models. It is firms like this that are putting the smarts into intelligent buildings and the smart grid.