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Making a substantive point using humor != trolling.

What form of grid/utility energy storage do you expect will dominate in 20 years?

I provided a reference to back up my assertion. Do you have any?

a mix of hydro and non-lithium batteries. for grid scale batteries, you don't care about weight, and if you make it big enough can hear the battery if it helps. as such there are a lot of very cool battery technologies in various stages of commercialization that will never go in a phone, but make a lot of sense when you scale them up to a few thousand pounds.

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