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Originally Posted by redpoint5
I'm still against chemical storage. Seems it would be more efficient to use pumped hydro or other potential kinetic energy storage such as your railcar suggestion.
How efficient is decomposing water into H2? This is one of the few chemical storage solutions I could see being practical.
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H2 conversion forth and back not good. Ammonia has also been used. Rail cars should be quite cost effective if there is an appropriate grade. I'm surprised Tesla hasn't jumped in on this since the Gigafactory1 is surrounded by hills. Save the batteries for transportation.