NY REV, Batteries, and the Transformation of Utilities.

"Utilities aren’t doomed, but they may undergo a radical transformation, becoming something closer to service providers and minders of an increasingly distributed grid rather than the centralized power producers they are today. Such a system would require lots of batteries to help balance the load and supply extra power during peak times, which is why GTM estimates the market will grow from $48 million today to about $1 billion in 2018."
Read more here:  http://www.theverge.com/2015/2/13/8033691/why-teslas-battery-for-your-home-should-terrify-utilities