Texas is poised for an unprecedented boom in the construction of high-voltage transmission lines. Photo: Courtesy of U.S. DOE The Lone Star State is reviewing $9 billion worth of transmission-line projects. The Electric Reliability Council of Texas is reviewing some $9 billion in transmission projects that would add 7,866 miles of new lines in west Texas, the Texas panhandle and other parts of the state over the next five years, ERCOT says in planning reports filed on Dec. 30 at the Public Utility Commission of Texas (PUCT). The planned projects include more than 2,000 miles of new 345-kV transmission lines
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.