First time I have seen this said out loud. Storage replaces transmission lines. The post has good data but gets a bit technical. Add in that batteries arbitrage the current somewhat wild price fluctuations in energy costs (at least in Texas) and you have a wining formula. The post claims battery farms are profitable after the second year. Not bad. It needs to be pointed out that the lunch they are eating is mostly coming from gas peaker plants. From Casey Handmers Blog.

Grid Storage: Batteries Will Win