carbon capture and storage

Carbon capture and storage technology can trap CO2 emissions at their source. But there’s debate around how much it should be relied on as a climate solution. The past few years have seen increased global attention and investment in carbon capture technology as a way to capture the emissions causing climate change before they enter the atmosphere. Policies like the EU's Net Zero Industry Act , the 45Q tax credit in the U.S. and Denmark's CCUS Fund , as well as emerging regulation in Indonesia, are all helping to accelerate the deployment of carbon capture, utilization and sequestration (CCUS). Yet even as the pipeline of CCUS projects grows year over year, progress remains far below what climate models indicate is needed due to stubbornly high costs, regulatory challenges, and insufficient policy and financial support. But not everyone sees CCUS as part of the climate solution. While certain countries are moving ahead with CCUS deployment, others are skeptical of its use. Some NGOs and other stakeholders oppose CCUS, arguing that it creates a moral hazard and that it's only a band-aid over what they see as the real problem: ending use of fossil fuels. They point to a mixed record of success, high costs, and the potential for disproportionate impacts on vulnerable communities among reasons to not rely on the technology. This article addresses key questions around the role of CCUS, including where the technology is today, in which sectors it will be most useful, and how much of the total mitigation need it can provide to help meet global climate targets. Carbon capture technology combined with utilization (sometimes referenced as "use") or sequestration (sometimes referenced as "storage") is a way to reduce CO2 from emissions sources (such as power plants or industrial facilities) using different technologies that separate CO2 from the other gases coming out of a facility. The CO2 is thus captured before entering the atmosphere. Then it is either permanently stored underground or incorporated into certain types of products, such as concrete or chemicals. No, CCUS is not the same as carbon removal. While CCUS captures carbon emissions at their source, carbon dioxide removal (or just "carbon removal") removes CO2 that is already in the atmosphere. Carbon removal includes a range of approaches , from familiar things like tree restoration to newer technological approaches, like direct air capture and carbon mineralization . Another type of carbon removal is bioenergy with carbon capture and sequestration, where biomass is combusted and carbon capture technology is used to capture those emissions before they enter the atmosphere. Even though this process involves carbon capture at an emissions source, it can result in carbon removal, because the captured CO2 originally came from the air via photosynthesis in the biomass that was combusted. While CCUS and carbon removal differ on where CO2 is collected, both CCUS and some types of carbon removal require somewhere to sequester the captured CO2. CCUS is one of many ways to reduce emissions and plays a different role from carbon removal in long-term and net-zero climate plans developed by countries or companies. Emissions reductions — including CCUS and many other options — should make up the vast majority of mitigation in those plans. But carbon removal can be used to counterbalance a much smaller portion of emissions (both CO2 and other greenhouse gases) that are too hard to abate with other means. In the longer term, carbon removal is also needed to achieve and sustain net-negative emissions to reduce the excess CO2 in the atmosphere that is causing harmful climate impacts. Notably, the term "carbon management" can be used to include both CCUS and carbon removal. This can be misleading, because along with playing different roles in reaching net-zero, CCUS and carbon removal have different risks, benefits and social and environmental impacts. 3) Which Sectors Could Use CCUS?