This could store more than a day of Germanys electricity demand. This person claims that costs per kWh are very low compared to other storage methods, and are using comparatively little space.

 

http://eduard-heindl.de/energy-storage/index-e.html
http://eduard-heindl.de/energy-storage/FAQ-energy-storage.html

 

25 Oct 2011 - 8:34
# lastedited 17 Mar 2013
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