Nuclear energy is not renewable if we discard nuclear fuel after one use. This uses, and wastes much of, the only fissile nuclear energy source, uranium-235. The U-235 is just 0.7% of natural uranium.
But nuclear energy is renewable if we recycle the fuel. The U-235 can then convert the billions of tons of uranium-238 (99.3% of natural uranium) into more fuel. (There are 4.5 billion tons of uranium recoverable just from the oceans.)
The world also has four times more thorium than uranium; which we can then also convert to U-233 as fuel.
Therefore, our nuclear fuel supplies can be ever-increasing; to be renewed for billions of years. This defines “renewable energy.”
-Jim Muckerheide
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