Carbon Capture and Storage (CCS)

Capturing CO₂ from point sources and storing it permanently underground.

What is Carbon Capture and Storage (CCS) (Note: mostly a reduction method)?

Carbon Capture and Storage (CCS) is a set of technologies that captures carbon dioxide (CO₂) from large point sources, such as power plants and industrial facilities, before it is released into the atmosphere. The captured CO₂ is then compressed, transported, and injected into deep underground geological formations for permanent storage.

Why is Carbon Capture and Storage (CCS) important?

CCS is important as a critical emissions reduction technology for decarbonizing heavy industries and power generation that are challenging to electrify or for which no viable low-carbon alternatives exist yet. It enables continued operation of essential industrial processes while significantly reducing their climate impact.

Related terms

Want to explore this topic further? Browse connected glossary terms below.

Geological Storage

Injecting and storing captured CO₂ in deep underground rock formations.

Removal methods

Carbon removal

Carbon removal refers to processes that actively take carbon dioxide out of the atmosphere and store it for the long term.

Core definitions

Bioenergy with Carbon Capture and Storage (BECCS)

Producing energy from biomass and capturing/storing the CO₂ emitted.

Removal methods

Frequently asked questions

Is CCS considered a carbon removal method?

Generally, CCS from fossil fuel point sources is considered an *emissions reduction* method, as it prevents new CO₂ from entering the atmosphere. It is only a *carbon removal* method when combined with biogenic sources (BECCS) or Direct Air Capture (DACCS).

What are the main components of a CCS system?

The main components are capture (separating CO₂ from emissions), transport (pipelines or ships), and storage (injecting CO₂ into geological formations).

What are the challenges for widespread CCS deployment?

Challenges include the high capital and operating costs, the energy penalty of the capture process, the need for extensive CO₂ transport infrastructure, public perception, and ensuring permanent, secure storage sites.