Atlanta-based Southern Company announced this month that carbon dioxide is now being captured from Alabama Power’s coal-fired Plant Barry power plant.
The carbon capture and storage facility at the plant is claimed to be the world’s largest for a coal-fired generating power plant. It will capture approximately 150,000 tons of carbon dioxide (CO2) annually, for permanent underground storage in a deep saline geologic formation.
Carbon dioxide at the Barry facility is being captured using Mitsubishi Heavy Industries’ KM-CDR amine solvent technology, which captures CO2 from the plant’s flue gas. It is then compressed, making it ready for pipeline transport.
Beginning in autumn this year, captured CO2 from the plant will be supplied to the Southeast Regional Carbon Sequestration Partnership — or SECARB — for transport by pipeline and injection 9,500ft underground at a site within the Citronelle Oil Field, a site about 11 miles from the part that is operated by Denbury Resources.
The CO2 will remain below the surface, permanently trapped in the geological formation into which it was injected. It is not being used for enhanced oil recovery. A characterisation well previously drilled within the field by SECARB revealed excellent characteristics for safe geologic storage.