American Electric Power and power plant supplier Alstom have agreed to work together to implement a commercial scale version of Alstom's carbon capture technology by 2011. The first phase of the project will involve the construction of a 30MW demonstration plant to validate the system. It will be constructed next to an existing AEP power plant in New Haven, West Virginia. It should be able to capture 100,000 tonnes of CO2 annually that will be stored in deep saline aquifers near the site. The demonstrator should start up around the end of 2008.
The second commercial scale phase would include a 200MW capture system on a plant in Oologah, Oklahoma, to capture up to 1.5 million tonnes of CO2 annually. Alstom's system uses chilled ammonia to capture the CO2 from the combustion exhaust stream. Lab testing of the system has shown it to be capable of capturing up to ninety percent of the CO2 in the exhaust stream at a lower cost than other capture technologies. The system is designed to be able to be retrofitted to existing plants or built in to new ones.