carbon capture and storage
What you should know about carbon capture and storage
Many climate experts agree that carbon capture and storage (CCS) is a critical technology, but what exactly is it, and why is it important for a lower-emission future?
CCS is the process of capturing CO2 from industrial activities that would otherwise be released into the atmosphere then injecting that CO2 into deep geologic formations for safe, secure and permanent storage underground. Its ability to decarbonize emission-intensive sectors like manufacturing and power generation will be crucial as society works to address climate change and meet society’s goals of the Paris Agreement. While renewable energy sources will play an important role in the world’s energy transition, CCS remains one of the few proven technologies capable of significantly reducing emissions in these hard-to-decarbonize sectors.
But like all energy technologies, there’s a lot of information out there to digest. So here are just seven examples of why CCS is one of the keys that could unlock a lower-emission future.
Take a look.
CCS is one of the few proven technologies that can deliver deep emissions reductions in industrial sectors
Decarbonization is incredibly difficult in industrial sectors like power generation and manufacturing due to the massive amounts of energy required to keep facilities running. And all that energy adds up to more than 70% of all global energy-related emissions. Currently, CCS is one of the few proven technologies with the potential to decarbonize these sectors while also being cost-effective and scalable.
ExxonMobil’s proposed CCS hub in Houston could capture up to 100 million metric tons of CO2 per year by 2040 from the industrial area around the Houston Ship Channel. It could also lay the groundwork for future CCS hubs across the country.
CCS could capture more than 90% of CO2 emissions
Experts agree that CCS will be crucial to mitigating the risks of climate change
Natural gas with CCS ensures a more stable and cost-effective energy supply than renewables alone
Natural gas coupled with CCS could be an energy combination of choice in a lower-carbon future. That’s because natural gas can keep up with changing energy demand, and it burns cleaner than other fossil fuels, like coal. For energy-intensive industries, those factors are especially important for reaching lower-emission goals.
In addition, retrofitting existing facilities with CCS is more cost-effective than a full switch to renewables because the natural gas infrastructure that powers facilities is already in place.
There's more than one way to capture CO2
CO2 can be safely and permanently stored underground
Thanks to their geological makeup, certain rock formations can safely and permanently trap CO2 underground. In fact, underground geological storage of CO2 has been a naturally occurring process for hundreds of millions of years. Independent studies, including from Carnegie Mellon University, agree that geologic CO2 storage remains a safe option to address climate change.
Geologic formations beneath the Gulf of Mexico, where ExxonMobil plans to store emissions captured in the nearby Houston industrial area, are estimated to be large enough to safely store up to 500 billion metric tons of CO2 (or the equivalent of more than 130 years of the country’s industrial and power generation emissions).
ExxonMobil is responsible for capturing 40% of all the CO2 ever captured
With more than 30 years of experience in the field, ExxonMobil is a leader in CCS, having captured more CO2 than any other company in the world. Currently, ExxonMobil captures about 9 million metric tons of CO2 per year at facilities in the United States, Australia and Qatar, and is exploring multiple new opportunities, including one in Houston’s industrial area. The company’s experience scaling up major projects and expertise in CCS makes it uniquely qualified to lead the charge in turning these plans into a reality.