I call Bullshit!
Currently, a significant factor holding back renewable energy sources like solar and wind is the fact that energy storage is often inefficient and expensive. When the sun stops shining or the wind stops blowing, that energy source is cut off. With better energy storage, however, the economics of the entire industry would change.
(emphasis mine)
The efficiency of energy storage is not the ONLY thing that matters. Conversion efficiency is much more important than storage efficiency. Getting the energy into and out of a storage system is actually where a lot of the losses occur and what make a lot of the proposed schemes completely unviable to begin with. On top of that the total efficiency of storage would have to about quadruple to even begin to have an impact. Storing energy is just not a good thing to do and matching generation to real time use will always be the most efficient option.
Biting the hand that feeds IT
