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8 November 2007 - American Electric Power (AEP), RWE and Alstom will collaborate during a planned validation of commercial-scale application of carbon capture and storage technology on an existing AEP coal-fired power plant.
RWE will join a project AEP announced in March when it signed a deal with Alstom, for post-combustion carbon capture technology using Alstom's chilled ammonia process. RWE will also participate in an associated project for deep geological storage of captured CO2.
The Alstom technology will be installed on AEP's 1300 MW Mountaineer Plant in New Haven, West Virginia where it will capture CO2 from a slipstream - or portion - of flue gas from the plant.
The slipstream will be equivalent to 20 MW of generation, an increase from the 10 MW included in the March announcement.
The Alstom chilled ammonia system is expected to capture up to 200 000 metric tonnes of CO2 per year, which will be injected for geological storage in deep saline aquifers at the site.
Battelle Memorial Institute, a global science and technology enterprise and a leader in carbon storage research, is serving as the consultant for AEP on geological storage.
In 2002, Battelle, AEP, the US Department of Energy and others sponsored the world's first site-specific investigation of carbon storage capabilities at the Mountaineer plant.
During the investigation, an approximately 9000-foot exploratory well and seismic studies determined that the site was suitable for deep geological storage of CO2.
The validation project at Mountaineer will begin in 2009, or after successful completion of a small-scale pilot demonstration of the technology by Alstom and the Electric Power Research Institute on a Wisconsin plant.
Once commercial viability of the technology is validated at Mountaineer, AEP plans to install Alstom's chilled ammonia technology on one of the 450-megawatt coal-fired units at its Northeastern Station in Oologah, Okla.
Plans are for this commercial-scale system to be operational at Northeastern early next decade. It is expected to capture about 1.5m metric tonnes of CO2 a year. The CO2 captured at Northeastern Station will be used for enhanced oil recovery.
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