Work is due to begin this month and will take around five years.
Camargo Correa will head a consortium including Colombian firms Conconcreto and Coninsa.
The 660 MW plant on the Porce River, lin the state of Antioquia, is due to begin commercial operations in 2010 at a total development cost of around $900 million. The Inter- American Development Bank (BID) will provide $200 million and the rest of the financing will be provided by Empresas Publicas de Medellin (EEPPM).
