Impregilo, lead contractor with a 60% stake in a consortium including Colombian companies Conalvias and Tecnica Vial, has been awarded the tender to build a hydroelectric plant on the river Sogamoso in north-western Colombia, about 40 km from the city of Bucaramanga. The EUR345 million project involves the construction of a dam 190 m-high and 300 m-long, as well as the underground power station that will house three turbines totalling 820 MW of installed power. Impregilo is already excavating two 870 m-long, 11 m-diameter diversion tunnels, and building roads and access tunnels to the underground power station, worth a further EUR55 million. The client is ISAGEN S.A, a mixed public/private concession holder. Visit www.impregilo.it and www.conalvias.com. 52/09.
