Carbon Capture in the Gulf Needs a Clearer Measure of Climate Value

The amount of CO2 captured by a project is an important operating measure. Its climate value depends on a longer chain of events: the source of the carbon, the energy required to handle it, and what happens after capture. Gulf sustainability leaders comparing storage and utilisation projects need to examine that chain before treating capacity as an emissions-reduction result.

An October development in Fujairah brings the issue into focus. Holcim UAE reported the commissioning of a cement carbon capture and underground mineralisation pilot on 1 October 2026. Its partner 44.01 describes a design capacity of 4 to 4.5 tonnes of CO2 per day and says the pilot has operated under live industrial conditions since July. Captured gas is transported to a storage site for injection into reactive rock. These are project-partner reports; the stated design capacity is not an independently verified annual abatement figure. ^[1], ^[2]

The development is relevant because it connects capture with a specified destination for the carbon. Its significance for future projects will depend on evidence about the operation of that complete chain, including the cost and resources required to deliver storage.

Storage and utilisation deliver different services

Permanent storage aims to keep captured carbon out of the atmosphere. Utilisation turns it into a product whose carbon may remain stored for a short or long period. A fuel can displace another fuel while releasing its carbon when used. That possible displacement benefit needs to be assessed separately from the volume processed by the capture equipment.

The International Energy Agency's analysis of CO2 utilisation identifies the source of carbon, energy inputs, displaced product and retention period as central to lifecycle assessment. It explains why using CO2 does not automatically reduce emissions. This remains useful background for evaluating new projects, even though the report was published in 2019. ^[3]

There is a further distinction for public reporting. Capturing and permanently storing fossil or process CO2 can prevent an emission. It does not, by itself, remove carbon already in the atmosphere. An investment committee should identify whether the proposed service is emissions avoidance, carbon recycling or atmospheric removal, and judge the supporting evidence accordingly.

New research reveals progress and the limits of headline results

Microalgae research illustrates both the opportunity and the need for careful interpretation. A study published on 15 October in Sustainable Environment Research investigated ultra-fine-bubble flotation for harvesting freshwater Chlorella. Under optimised pH and chemical-dosing conditions, recovery approached 100%. That figure concerns recovery of microalgal material from a liquid culture, rather than the percentage of an industrial site's CO2 emissions captured. The study addresses a downstream processing bottleneck, not the lifecycle performance of a complete carbon project. ^[4]

For technology assessors, the result makes harvesting a useful area for further investigation. It does not establish that the same recovery, chemical requirements or economics would apply to another organism or cultivation design. A process improvement creates value only in the context of the rest of the installation.

A separate modelling paper published on 6 October makes the accounting distinction explicit. Jain and colleagues modelled capture from a residential boiler followed by algal biodiesel production. Their scenario captured approximately 7.78 tonnes of CO2 per heating season, while estimating about 1.74 tonnes of CO2-equivalent annual fossil-fuel displacement. The carbon in the biodiesel would subsequently be released during combustion. The paper generated no new experimental data and estimated a simple payback of approximately 22 years for its household case. ^[5]

Those values are not benchmarks for a Gulf industrial facility. The paper also describes its specific energy estimate as a lower bound because some separation and compression duties were excluded. Its strongest contribution to this discussion is to show how a substantial captured quantity can coexist with a smaller displacement benefit and difficult economics. A complete project assessment still needs the energy and emissions omitted from a simplified model.

Compare projects against the same objective

A sustainability team seeking durable emissions avoidance should compare projects on that outcome. A business seeking a carbon-derived feedstock needs to establish product quality, demand and the alternative material it would displace. Those objectives may support different technology choices.

For storage, the assessment should cover capture, transport, injection and monitoring, including interruptions between these stages. For conversion, it should extend through separation, refining, product use and final carbon release or retention. Both require a defined baseline and a full account of material and energy inputs.

This is the context for biological conversion platforms such as Syklea's ALIUM, which features in Amanah's carbon technology work. The manufacturer describes an integrated route from gas conditioning to microalgae-based conversion and product recovery. Its potential belongs in a comparison of complete product pathways. Published research on other algae systems cannot serve as independent validation of ALIUM's performance. ^[6]

Gulf operating conditions should inform the comparison directly. The emissions stream available at a particular facility, its operating schedule and access to utilities are more useful inputs than a generic capture factor. Where cooling or water supply is required, those demands belong inside the resource and cost assessment.

Carbon revenue needs evidence of its own

Verra's 28 September announcement that its carbon capture and storage methodology and accompanying modules had received ICVCM approval is a relevant market development. The methodology covers projects involving permanent storage. Approval of a methodology does not establish that a particular installation is eligible or that its emissions reductions have been verified. ^[7]

Financial models should keep product sales, operating savings and any proposed carbon revenue separate. Each depends on different evidence and commercial arrangements. A project should also show how its economics change if one expected revenue stream is delayed or unavailable.

The most useful disclosure would report gross capture, the assessed climate benefit and the financial case as separate results. That would allow public authorities and investors to recognise technical progress without assigning it a climate value that has not yet been demonstrated. As regional pilots develop, this distinction will make their operating evidence more valuable to the next generation of projects.