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The great thing about geothermal is that it's 24/7 dispatchable without expensive added storage. That would make it a great companion to solar and wind energy i
by api 5y ago
The great thing about geothermal is that it's 24/7 dispatchable without expensive added storage. That would make it a great companion to solar and wind energy in place of natural gas. Even 5-10% of total power on an absolute basis from geothermal could be more valuable than it appears by adding stability to the grid without fossil fuels. Drilling into geothermal would make sense if it were cheaper than adding grid-scale battery storage for nighttime use.
The energy flow from the Earth's core is small in a percentage sense, but keep in mind that humanity's energy use is actually tiny when measured on planetary or cosmic scales. Here's the total solar surface area we'd need, for scale:
https://www.axionpower.com/knowledge/power-world-with-solar/ https://www.axionpower.com/knowledge/power-world-with-solar/
Cover much of New Mexico with solar PV and you could power all of global industrial civilization (ignoring storage).