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That is just more complicated than it needs to be.


First question: how much energy does the US need?

Answer:


The US currently uses about 100 "quads of energy a year. A quad is equal to 1x1018 Joules. So we need to generate 1020 Joules a year. If we assume (incorrectly, but this is only an order of magnitude calculation) that power demand is constant, then we need to produce 1012 Watts of power.

A nuclear power plant produces about 1000 MW of powers, so we require 1000 nuclear reactors."


Said differently:



"The US uses power at an average rate of about 4.1 terawatts, i.e. about 4100 gigawatts. A big nuclear reactor produces about 1 gigawatt."


Yes there are differences, big deal, this is just a forum. Let's at least start with an estimate.



Second question: How much energy can geothermal produce?


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