On September 1, 2007, the Colombian companies Emgesa S.A. E.S.P. and Central Hidroeléctrica de Betania S.A. E.S.P. merged, the latter absorbing the former and changing its name to Emgesa S.A. E.S.P.
It is now Colombia’s largest power company, located on the outskirts of the city of Bogotá. Operating 14 plants with a total capacity of 3,509 MW, including El Guavio, the country’s largest hydroelectric plant with a capacity of 1,213 MW. Twelve of the fourteen plants are hydroelectric and the other two are thermoelectric.
The net generation for 2017 was 14,765 GWh. The hydroelectric generation was 14,593 and the thermal generation was 172 GWh.