Thought this was a really good article concerning the potential investments within the Electric Grid Smart Grid build out. Touches on key companies like Gridpoint, and the type of batteries being tested with respect to energy storage from Alternative Energies. The energy storage could be a huge market, and the article gives numbers concerning its potential, but also realistic near future estimates. (in other words, no rush.)
Its a good starter article for anyone interested in the next major infrastructure buildout.
article (Gridpoint to manage Wind Power Battery Storage)