A Carbon capture aim is to combat global warming. It traps the carbon dioxide from emission and transports it to a storage location (mostly underground) for isolation. 

According to the Intergovernmental Panel on Climate Change (IPCC) 2005, it can reduce carbon emissions by 80%-90% compared to plants without carbon capture facility. Carbon capture technology is cost-effective in terms of offsetting carbon. Plants which are operating without such technology can incur more cost to reduce their emissions. The technology can capture 90% of carbon dioxide emissions from power plants and other industrial units. 

The carbon capture technology works in three steps:

• First, carbon is captured from the air, emitted by power plants or industrial sources.
• Second, carbon is separated from the flue gas by using separating technologies, i.e. absorption, adsorption, chemical looping and membrane gas separation technology. It not only scrubs the carbon from the flue gas but also reduces other pollutants like nitrogen oxide, sulfur oxide and particulates. It is essential to remove impurities from captured air; otherwise, it poses a significant threat of pipeline corrosion. 
• Third, the carbon is transported to storage units through pipelines and stored underground or deep in oceans, without releasing to the atmosphere. Carbon can be converted in the form of gas or solids. The stored carbon can also be used in the oil industry to extract oil, fuel-producing, building materials etc. Companies are also investing in discovering new ways to reuse the captured carbon.

According to the Centre for Climate and Energy Solutions, in 2017, there were 21 commercial based carbon capture projects in operation while 22 were in the process around the world.