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A 30MW pure hydrogen gas turbine unit can effectively solve the problem of power abandonment in wind and solar energy projects.
(interestingengineering.com)
A tech news sub for communists
The problem with turbines is that they need to be on all the time. You can't turn them on and off constantly. They need several hours of warm-up to achieve efficient conversion of fuel to electricity, when turned on. The article sort of speaks about this midway, but it's jargony.
But, regardless, electrolysing water with excess electricity to make a reservoir of electricity is an amazing idea.