Brief: Isagen being investigated after fish deaths at 820-MW Sogamoso

Autoridad Nacional de Licensias Ambientales (Anla) has asked Isagen to provide a full report of its operational activities at the 820-MW Sogamoso hydro facility after “scores” of dead fish were discovered just downstream.

BNamericas reports the fish were encountered in the Playa-Flor sector, which is within the first 4 km downstream from the powerhouse.

Sogamoso, on the Sogamoso River in the northern Santander department of Colombia, became fully operational in December 2014.

Isagen operates seven power plants with total installed capacity of 3,032 MW, 2,732 MW from hydroelectric power. The company purchased rights to develop Sogamoso from Electrificadora de Santander S.A. in 2007. The facility was built by Salini Impregilo.

Isagen says Sogamoso consists of a dam 190 m high and an underground machine room holding “the country’s three largest generators.” It has average annual generation of 5,056 GWh.

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