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Sand! What an incredible idea -- except for the needed space. Bummer. Still, I applaud these new ideas. I'm sure there will be ONE that'll work.

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Right? That said, all experts agree that we need MANY different technologies for storage, as a one size fits all approach won't work for every geography. So effectively we will have about 5-10 techs worldwide, and that should cover most use cases. I think the sand battery won't happen in the US (except maybe Alaska?), but its perfect for Scandinavia. We will just use something else.

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Really interesting, thank you. Storage is definitely the big challenge with wind and solar so it's interesting to look at what's coming in storage technology.

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Yeah. Storage tech is so diverse and is the next frontier. We can't get rid of fossil fuels until then. Lets see what we come up with...

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