Hydroelectricity production is concentrated on the Caroní River in Guayana Region. Today it has 4 different dams. The largest hydroplant is the Guri dam with 10,200 MW of installed capacity, which makes it the third-largest hydroelectric plant in the world. Other hydroelectric projects on the Caroní are Caruachi Dam, Macagua I, Macagua II and Macagua III, with a total of 15.910 MW of installed capacity in 2003. A new dams, Tocoma (2 160 MW) and Tayucay (2 450 MW), was under construction between Guri and Caruachi in 2003. With a projected installed capacity for the whole Hydroelectric Complex (upstream Caroni River and downstream Caroni River), between 17.250 and 20.000 MW were planned for 2010.
