The Colbún and Machicura hydroelectric dam power plants start operations.

Endesa, Empresa Nacional de Electricidad S.A., signs a division agreement and Empresa Eléctrica Colbún Machicura S.A. is founded, which is known today as Colbún S.A..

The San Ignacio hydroelectric power plant begins its operations.

CORFO sells 37% of its stake in Empresa Eléctrica Colbún Machicura S.A. and ceases to hold a controlling interest in the company.

The Rucúe hydroelectric power plant starts operations.

Commercial operation of the Nehuenco I combined cycle thermal power plant begins.

Through its subsidiary Empresa Eléctrica Industrial S.A., Colbún S.A. acquires the Carena run-of-river hydroelectric plant.

CORFO sells the majority of its shares in the stock market and changes the company name to Colbún S.A.

Nehuenco II combined cycle thermal power plant starts up operations.

The run-of-river hydroelectric plants –Chacabuquito, Los Quilos, Blanco, Juncal, Juncalito– and the Canutillar hydroelectric dam power plant and Antilhue thermoelectric plant, are incorporated following the merger.

Commercial operations begin of the Candelaria thermal open cycle power plant.

Following the merger with Hidroeléctrica Cenelca S.A., Minera Valparaíso S.A., a subsidiary of the Matte Group, becomes the controller of Colbún S.A.

The Chacabuquito run-of-river hydroelectric plant is registered under the Clean Development Mechanism (CDM), which will enable an annual reduction of approximately 80,000 tons of CO2e.

The Quilleco and Chiburgo hydroelectric plants start operations. Chiburgo is the first plant built by the Company within the framework of the law promoting non-conventional renewable energies.

The Nehuenco II power plant’s dual operation with natural gas and diesel oil begins its operations.

Hornitos hydroelectric plant starts up operations.

The Hornitos and Quilleco run-of-river hydroelectric plants are registered in the Clean Development Mechanism (CDM), enabling annual CO2e reductions of 118,000 and 172,000 tons, respectively.

Operations begin of the ERNC San Clemente mini hydroelectric power plant. The plant was registered a year later under the Clean Development Mechanism (CDM), enabling an annual reduction of around 17,000 tons of CO2e, which would be equivalent to taking more than 4,000 cars out of circulation.

Operations begin of Unit 1 of the Santa María I Thermoelectric Power Plant, Colbún S.A.’s first coal-fired power plant.

Publication of our first Sustainability Report, which tracks all of our sustainability performance indicators, based on the methodology of the Global Reporting Initiative (GRI).

Startup of commercial operations of the Angostura hydroelectric dam and power plant.

Acquisition of 51% of the shares of Fénix Power Perú S.A., a Peruvian electric power generation company, which is the owner of a natural-gas fired, combined cycle thermoelectric plant located in Chilca, Peru with an installed capacity of 570 MW.

La Mina (37 MW) begins its commercial operations in August 2018. This is Colbún’s first power plant to measure its carbon footprint during the construction phase, and the fifth plant to be certified to issue green bonds. Located in the Maule Region, it generates enough energy for the power needs of around 86,000 people.

The Ovejería (9 MW) photovoltaic park begins commercial operations in August and is consolidated as the first plant equipped with this technology. Located in the Metropolitan Region, Ovejería is categorized as a PMGD (Small Medium Distributed Generation) that enables the reduction of 11,000 tons of CO2 emissions each year, roughly equivalent to taking 2,750 cars out of circulation.