Carbon capture and storage (CCS) has emerged as a critical method for curbing greenhouse gas emissions, functioning by isolating carbon dioxide (CO2) from industrial sources or natural settings before it enters the atmosphere. After capture, the CO2 is moved to a permanent storage site, commonly deep underground geological formations. This approach has seen its most widespread application at major emission sources, including natural gas processing facilities.
A significant portion of the captured CO2—roughly 80% annually—is directed toward enhanced oil recovery (EOR). In this process, CO2 is pumped into partially depleted oil fields to push out additional crude oil, with the majority of the injected gas remaining trapped underground.
Because of this dual function, the technology is often described as carbon capture, utilization, and storage (CCUS). The origins of CCS date back to the mid-1900s, when oil and gas firms first employed similar techniques to refine natural gas and boost oil output. Interest in CCS as a method for reducing greenhouse gases began to rise in the 1980s and accelerated further in the 2000s. Yet, despite growing enthusiasm, the actual rollout of CCS projects has faced considerable obstacles.
A 2022 review revealed that roughly 70% of all announced CCS initiatives never came to fruition. The failure rate was especially stark in the electricity sector, where it exceeded 98%.
This gap between promises and reality underscores the need for a more thorough examination of the barriers and prospects surrounding CCS. By 2024, 44 CCS plants were in operation worldwide, representing a notable achievement in the technology’s development. These facilities demonstrate CCS’s potential to meaningfully lower greenhouse gas emissions.
Ongoing advancements are anticipated to be vital as the world shifts toward a cleaner energy system. CCS applications are expected to expand across industrial processes and power generation in the years ahead.
The use of CCS for EOR remains a primary application, as injecting CO2 into oil reservoirs not only boosts oil extraction but also locks away a substantial amount of the gas, preventing its release. This dual advantage—enhancing oil recovery while storing CO2—highlights CCS’s potential as a cornerstone of broader climate action. Looking forward, the trajectory of CCS will depend on technological progress, evolving regulations, and economic conditions.
As global efforts to address climate change intensify, CCS will likely remain a focus of debate and research. Improving efficiency and cutting costs are key priorities, and the coming years will be pivotal in determining whether CCS can be scaled up and woven into international climate strategies, making it a development worth monitoring closely.
