The U.S. Energy Dept. now is seeking alternate locations for captured gas from its planned FutureGen 2.0 coal-fired powerplant project. DOE says it will still proceed with its flagship carbon capture and storage project despite lacking concrete plans on where it will store the carbon emissions. The $1-billion project’s partners were shaken on Aug. 11 when Mattoon, Ill., the long-planned FutureGen site, pulled out of the scheme. Town officials rejected DOE’s altered plans to retrofit a powerplant elsewhere in the state and instead store CO? emissions in a subterranean geological formation beneath Coles County.
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.