Lightning has a peak power of 1TW for 30 microseconds according to Wikipedia, corresponding to an energy content of about 8000 Watt-hours. That is enough to run a 100 watt conventional light bulb for 80 hours, so not actually much energy. You would need to capture about half a million lightning strikes a second if you wanted to power the world that way, for example.
this post was submitted on 13 Aug 2023
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I thought a bolt of lightning can produce 1.21 gigawatts? Doc Brown said this in Back to the Future movie.
Unless you can control the weather which if it was possible, would likely take lots of energy ans is the only way to make a "lightning power plant" to my understanding.
Remember how hard it was to capture a lightning bolt in Back to the Future movie? The only reason they succeeded was because they knew when and where lightning will strike in a week and they timed it out perfectly.