What carbon capture has actually delivered, in one Q&A

Carbon Brief examines CCS: called critical by the IPCC, backed by up to £21.7bn in the UK, and repeatedly scaled back in practice.

Carbon Brief published an explainer on 3 August 2026 examining the role carbon capture and storage is expected to play in reaching net-zero, its record so far, and why it is contested.

The mechanism is straightforward. Carbon dioxide is separated from a large emitter's exhaust stream — a gas power plant or a cement factory — generally using a chemical solvent, compressed into a liquid, transported by pipeline or vehicle, and injected into underground reservoirs such as depleted oil fields or saline aquifers.

The politics are not. The Intergovernmental Panel on Climate Change describes CCS as critical for cutting emissions from sectors with few alternatives, cement among them, and it sits at the heart of many national net-zero plans. The UK has committed as much as £21.7 billion over the coming decades to building a domestic CCS industry. Against that, critics point to high costs, close ties to the fossil-fuel industry and a history of poor performance, describing the technology as a dangerous distraction and a false climate solution, and as unproven at the scale required to matter. Carbon Brief notes the outlook for CCS roll-out has been scaled back repeatedly, as the technology failed to deliver as quickly as expected and policy support wavered.

For a project that tries to distinguish finished cost curves from assumed ones, this is useful housekeeping. A large share of published decarbonisation pathways carry CCS as an assumption about the 2040s rather than as deployed capacity, and the gap between those two things is exactly what separates a forecast from a hope.

This is an explainer rather than a development: no new capacity, cost or policy is announced in it. Its value is the record it assembles.

Source: Carbon Brief