"Carbon capture and sequestration (or storage)-known as CCS-is a process that involves capturing man-made carbon dioxide (CO2) at its source and storing it to avoid its release to the atmosphere. (CCS is sometimes referred to as CCUS-carbon capture, utilization, and storage.) CCS could reduce the amount of CO2 emitted to the atmosphere from the burning of fossil fuels at power plants and other large industrial facilities. An integrated CCS system would include three main steps:  capturing and separating CO2 from other gases;  purifying, compressing, and transporting the captured CO2 to the sequestration site; and  injecting the CO2 in underground geological reservoirs (the process is explained more fully below in 'CCS Primer'). The U.S. Department of Energy (DOE) has long supported research and development (R&D) on CCS within its Fossil Energy Research and Development portfolio (FER&D); however, the Trump Administration proposed to cut FER&D funding substantially in its FY2018 budget request. The Trump Administration's proposal differs from the policy trends of the previous two Administrations, which supported R&D on CCS and emphasized the development of large-scale demonstration projects-nearly first-of-their-kind ventures using technologies developed at a pilot or smaller scale that have been ramped up to commercial scale-to evaluate how CCS might be deployed commercially. The Trump Administration's proposal to curtail funding for CCS, coupled with the successful launch of one large CCS plant in January 2017 (the Petra Nova plant in Texas) and the suspension of another in June 2017 (the Kemper County Energy Facility in Mississippi), has contributed to uncertainty about the future of CCS. This report provides a summary and analysis of the current state of CCS in the United States."
CRS Report for Congress, R44902
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html