Disputes between Bechtel Corp., San Francisco, and Duke Energy, Charlotte, N.C., have become a focus of those questioning cost overruns at Duke’s integrated gas combined-cycle (IGCC) plant in Edwardsport, Ind. Photo: Courtesy of Duke Energy Indiana The 630-MW integrated gas combined-cycle powerplant, the biggest facility of its type, is being built by Bechtel for Duke Energy. As the price of the facility—which is 60% complete—has risen to $2.9 billion now from $1.6 billion in 2006, the Citizens Action Coalition of Indiana and others are calling on the Indiana Utility Regulatory Commission to probe whether fraud, concealment and gross mismanagement are
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.