alt Hacker NewsThen solar and wind aren't technically renewable either, because the sun is going to eventually consume the earth and explode.
Geothermal is renewable.
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delichon • today at 2:57 PM
And a new star will eventually form from the debris, so "renewable" is a function of time scale.
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However much solar or wind energy we use, the Sun will last exactly as long. This is not a matter of scale. Even if we were to build a photovoltaic Dyson sphere around the Sun, it would have the same lifespan.
That is not the case for geothermal. It could in theory be cooled down if exploited at a massive scale.
Saying geothermal is not renewable is not an indictment nor a criticism. Geothermal is great and we should use it more. It's just technically not renewable, but that doesn't matter.