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A comment on The Future of Wind Turbines? No Blades (2015). Parent comment

Re:The Future of Wind Turbines? No Blades (2015) by einpoklum on Saturday September 07, 2019 @09:57AM (#20903777)
Betz' law is not a restriction. The challenge isn't extraction of more of the energy. The challenges are:

* Production cost $ * Production cost in terms of resources (e.g. renewable organic materials vs metal, rare earth etc.) * Maintenance $ * Complexity of maintenance * Necessary area / turbine * Necessary area / turbine * Necessary volume / turbine * Noise level * Usability in extreme environmental conditions

... and maybe other things I've missed.

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Re:The Future of Wind Turbines? No Blades (2015) by realusername on Saturday September 07, 2019 @09:53PM (#20908076)
That's still a big restriction, other technologies could have a breakthrough which makes them 10x more efficient, this will never happen with wind turbines.
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Re:The Future of Wind Turbines? No Blades (2015) by einpoklum on Monday September 09, 2019 @10:54AM (#20918748)
We're talking about harnessing wind power. There is no "10x more efficient".
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