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Slight confusion in how much the lens actually increases the wind turbine output by, (Article says triple, video says double), but wow, very cool development, and that sort of addition can always be retrofitted onto older turbines, right?
I wonder if the doubled power output continues up to the larger designs, would think that it only increases the speed of the wind at the edge of the ring, which proportionally becomes quite small as the radius of the turbine increases.