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Well, while 1 billion joules next per strike seems a lot and effective for powering several houses, the problem is what happens when the load is scaled to the size of a decent size town of say 100,000 with loads rather more than a 60W lightbulb. Over the area of the town it can’t collect enough strikes to run it without a tropical storm delivering a strike every few seconds.
Can’t do that every night.
Do the maths on your household useage and a billion joules doesn’t go far, for example an electric oven cooking a pizza uses about 10 million joules, and aircon for a typical house running 8 hours 100 million joules. You’d need a lightning bolt every third day, per house.
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