The Download: enhanced geothermal systems, and promising climate tech
Geothermal heat, an abundant and carbon-free energy source, offers an alternative to fossil fuels that doesn’t vary with the weather or time of day. However, conventional geothermal plants require specific geological conditions—in particular, permeable rocks with water sources.
Because of this, geothermal accounts for less than 1% of global renewables capacity. But an emerging technology could let us exploit even more of the heat beneath our feet.
Enhanced geothermal systems allow companies to access geothermal heat in new locations, cracking open relatively solid rocks at depths much greater than existing geothermal wells. Water is then injected into these rocks to generate steam, which subsequently drives turbines to produce electricity. But the technology is not without potential risks. Read the full story.
—June Kim
Enhanced geothermal systems is one of MIT Technology Review’s 10 Breakthrough Technologies for 2024. Check out the rest of the list and vote for the final 11th breakthrough—we’ll reveal the winner in April.
Three climate technologies breaking through in 2024
Climate tech is big news for 2024. So much so, it makes up not one, not two, but three entries in this year’s 10 Breakthrough Technologies, MIT Technology Review’s list of the tech that’s changing our world.
Our climate reporter Casey Crownhart has written a handy guide to why these technologies are so noteworthy, and what you need to know about them. Read the full story.
This story is from The Spark, our weekly climate and energy newsletter. Sign up to receive it in your inbox every Wednesday.
Geothermal heat, an abundant and carbon-free energy source, offers an alternative to fossil fuels that doesn’t vary with the weather or time of day. However, conventional geothermal plants require specific geological conditions—in particular, permeable rocks with water sources.
Because of this, geothermal accounts for less than 1% of global renewables capacity. But an emerging technology could let us exploit even more of the heat beneath our feet.
Enhanced geothermal systems allow companies to access geothermal heat in new locations, cracking open relatively solid rocks at depths much greater than existing geothermal wells. Water is then injected into these rocks to generate steam, which subsequently drives turbines to produce electricity. But the technology is not without potential risks. Read the full story.
—June Kim
Enhanced geothermal systems is one of MIT Technology Review’s 10 Breakthrough Technologies for 2024. Check out the rest of the list and vote for the final 11th breakthrough—we’ll reveal the winner in April.
Three climate technologies breaking through in 2024
Climate tech is big news for 2024. So much so, it makes up not one, not two, but three entries in this year’s 10 Breakthrough Technologies, MIT Technology Review’s list of the tech that’s changing our world.
Our climate reporter Casey Crownhart has written a handy guide to why these technologies are so noteworthy, and what you need to know about them. Read the full story.
This story is from The Spark, our weekly climate and energy newsletter. Sign up to receive it in your inbox every Wednesday.
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