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Re:White House eyes subsidies for nuclear plants to help mee... by adrianN on Wednesday May 05, 2021 @12:11PM (#27051781)
Where batteries stop scaling you can produce Hydrogen or Methane. The efficiency sucks, but most countries already have infrastructure to store huge amounts of gas.
Re:White House eyes subsidies for nuclear plants to help mee... by pfdietz on Wednesday May 05, 2021 @02:42PM (#27053962)
One can also go to alternate battery chemistries optimized for longer term storage. In particular, this means capital cost is more important, but specific power and efficiency are less important. Electrodes optimized for cost rather than ion mobility, for example.

Hydrogen would still be hard to beat for seasonal storage, though.