This is basically the goal, right? When Tesla opened their patents and spun-off their battery division[1] that was the big takeaway - to see more of this sort of thing. The interesting thing about this case is that there seems to be at least some cooperation with the German utility companies, which is a huge boon. If they don't get a piece of the pie, it can be hard for individuals or small communities to go up against them.

1: http://arstechnica.com/science/2015/05/tesla-energys-goal-ch...

GM was doing the same thing with Volt batteries even before TSLA opened up its patents. TSLA fanboys should stop crediting TSLA for every thing in EV-tech world.

Tesla's goal is to fund their buildout of manufacturing capacity for utility scale battery storage using luxury vehicles (which, might I add, is not only working, but ahead of schedule).

This is similar to a system by Enercon using new batteries, one of the largest wind turbine builders. They have more details and pictures in their magazine "windblat" http://www.enercon.de/fileadmin/Redakteur/Medien-Portal/wind...

Which is an interesting read for those following electricity production technology.

Enercon: "It comprises a battery storage system with 10 MW installed power and a capacity of 10.79 MWh" and "The energy is stored in a total of 3,360 lithium-ion storage modules, which are housed inside the 17 x 30 m storage building. The rechargeable cells come from the Korean battery manufacturer LG"

So similar, roughly 10 MWh in capacity.

Too bad the Daimler press release doesn't tell about the power.