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Do we need nuclear power for sustainable energy production?
Fuel for nuclear energy will last a very long time.
Nuclear reactors use very little fuel.
Collecting uranium dissolved in seawater and processing it in breeder reactors could supply Earth's energy needs for
5 billion years
Closing the fuel cycle with
Generation IV reactors
will make efficient use of U238 and increase by thousand years the availability of nuclear fuel.
Even when supplies of uranium fuel become exhausted,
fuel could be used as an alternative.
Fuel prices for nuclear energy are rising as supplies of fuel decline.
With the increase in demand which would come about from a greater reliance on nuclear power the amount of fuel needed will also increase. We would run out of fuel faster in this case.
Nuclear fuel is not infinite, which means it will run out at some point. This makes it unsustainable in the long run.