Chevron is part of a group of old-school fossil-fuel companies investing hundreds of millions of dollars into geothermal-energy projects aiming to use fracking-type technology to find and access underground heat — heat that might very well become the world’s most-stable source of clean power.
In sufficient quantities, underground heat can be used to generate a consistent source of carbon-free electricity, making it superior to both wind and solar power, both of which suffer from issues of unreliability.
While finding suitable heat sources in places with …
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