Carbon Capture & Storage

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When coal burns, it creates the greenhouse gas carbon dioxide (CO2), as well as other air emissions.
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Emissions exit the boiler as "flue gas". CO2 in the flue gas reacts with chemicals to remove most of it.
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Flue gas that has been stripped of CO2 is released into the atmosphere through a stack (chimney).
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Captured CO2 is compressed, dewatered and transported via pipeline to a geologic storage site.
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Captured CO2 is pumped into saline formations a mile or more below the Earth’s surface where it can be safely stored.
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Sometimes captured CO2 can also be used to increase the flow of oil from an otherwise depleted reserve, where the CO2 will eventually be stored at least 2,500 feet below the surface.

Climate-change concerns represent a serious challenge. Today, energy companies are working with the federal government to develop, demonstrate and deploy the next generation of advanced technologies. These technologies will make it possible to reduce emissions to very low levels for traditional pollutant emissions, as well as capture and safely store carbon dioxide – while ensuring a reliable supply of affordable electricity to meet America’s growing energy needs using America’s most abundant, domestically produced fuel.