“Our approach — ‘partial capture’ — can get CO2 emissions from coal-burning plants down to emissions levels of natural gas power plants,” said Ashleigh Hildebrand, a graduate student in chemical engineering and the Technology and Policy Program. “Policies such as California’s Emissions Performance Standards could be met by coal plants using partial capture rather than having to rely solely on natural gas, which is increasingly imported and subject to high and volatile prices.”
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The researchers conclude that as a near-term measure, partial capture looks promising. New coal plants with lower CO2 emissions would generate much-needed electricity while also demonstrating carbon capture and providing a setting for testing CO2 storage — steps that will accelerate the large-scale deployment of full capture in the future.