Department of Energy

Carbon Capture, Utilization & Storage

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Carbon capture, utilization and storage (CCUS), also referred to as carbon capture, utilization and sequestration, is a process that captures carbon dioxide emissions from sources like coal-fired power plants and either reuses or stores it so it will not enter the atmosphere. Carbon dioxide storage in geologic formations includes oil and gas reservoirs, unmineable coal seams and deep saline reservoirs -- structures that have stored crude oil, natural gas, brine and carbon dioxide over millions of years. 

The Energy Department supports research and development of tools to assess the environmental fitness and safety of -- and predictability of future capacity within -- proposed geologic storage sites. We’re also developing models that simulate the flow of stored carbon dioxide, to help understand and predict chemical changes and effects of increased pressure that may occur.