Transmission Developers Inc. says it has started talks with two large Canadian power developers that are interested in moving power over TDI’s proposed $1.9-billion transmission line from Canada to New York. The Toronto-based developer plans to build the 355-mile Champlain Hudson Power Express, a high-voltage, direct-current line with 1,000 MW of capacity from Quebec to New York City. Donald Jessome, TDI’s president and CEO, did not name the renewable-energy projects for which his company is negotiating but described them as “projects already built or currently being built.” TDI expects to begin construction of the merchant line in September 2011 and
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.