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'Windmill': China tests world’s first megawatt-level airship to capture high winds
(interestingengineering.com)
This is a most excellent place for technology news and articles.
Well maybe its a dead end then. You'll have regular use of highly inefficient alternative with a huge maintenance overhead just because an emergency might happen some day?
Cool tech but entirely impractical and probably will never be deployed at any scale higher than a demo.