Photo: Hot air: The Soultz-sous-Fôrets geothermal plant in Alsace, France, pumps water into fractured rock to extract heat and thus generate electricity. Researchers backed by $16 million in federal stimulus funds seek to prove that such geothermal plants could generate 50 percent more heat by cycling carbon dioxide underground instead.Credit: Géothermie Soultz
From Technology Review:
Carbon dioxide captured from power plants could make geothermal energy more practical.
Carbon dioxide generated by power plants may find a second life as a working fluid to help recover geothermal heat from kilometers underground. Such a system would not only capture the carbon dioxide and keep it out of the atmosphere, it would also be a cost-effective way to use the greenhouse gas to generate new power.
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