No I am not confused - answer the question then, how much power is needed to feed the world, as it seems the most people live in places with bad infrastructure

No I am not confused - answer the question then, how much power is needed to feed the world, as it seems the most people live in places with bad infrastructure and therefore don't consume that much power after all. You could have answered simply by saying how much power per human is necessary, and give the fraction that is generated with nuclear power. Your claim was after all that we need all the power that is currently generated. It seems unlikely, because as I said, most people are not even in a position to use a lot of power atm. Even if you claim that all their lives could be improved by access to electricity, by the time we could have built nuclear power plants everywhere, it might as well have been possible to reduce the population again. Remember, this is about options: your claim was that there are no other options than nuclear power plants. I am not saying we should reduce population numbers, just that there are certainly other options.