alt Hacker News> The amount we can extract is tiny compared to the volume of energy put into the air every day by the sun.
Here's a study in how much wind power you can extract before adding more wind turbines doesn't produce more power overall.
At the 100m mark (as opposed to the whole atmosphere up to the jet streams), they calculate 250TW.
Total human electricity generation is well under 5TW (30PWh/yr, out of around 180PWh/yr of total energy), so we could supply all electricity from wind and still leave 98% of the "extractable" global wind potential in the air, which is itself less than all wind energy because of the Betz limit.