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More or less what I was thinking, when even the operators of coal fired plants are not interested in extending the lives of what they have or building more then the writing is on the wall for coal.
A different twist on pumped hydropower what I was thinking. I suppose I am pre conditioned to see hydro as tens of kilometres of pipes coming down mountains, which would mean big pumping losses going back the other way. If they can make it work with a few tens of meters of head then it makes much more sense.
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