Google.org, the philanthropic wing of Google, has announced a $10 million investment in a renewable energy technology that’s powered by hot rocks several miles beneath the earth’s surface. The technology, called Enhanced Geothermal Systems (EGS), differs from traditional geothermal energy that relies on finding natural pockets of hot water and steam. Instead, EGS fractures the hot rock, circulates water in its system, and uses the steam created from the process to create electricity in a turbine [Cleantechnica].
The system could augment less reliable renewable energy sources like solar and wind power, which don’t generate steady amounts of energy. Google executive Dan Reicher says EGS would be very dependable, and could be revolutionary. “It’s 24-7, it’s potentially developable all over the country, all over the world, and for all that we really do think it could be the ‘killer app’ of the energy world” [New Scientist].
Google Invests in Energy From Hot Rocks Deep Underground
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