The government says the alternative to HidroAysen lies in the measures it announced in its energy agenda last month.
They include the construction of a Liquid Natural Gas (LNG) terminal in the south of the country, enabling Chile to import gas from overseas.
The country has already built two such terminals in recent years, one in the north, to feed the vast copper mines in the Atacama desert, and one in the centre to supply the industrial and residential heartland around the capital, Santiago.
The terminals have helped Chile break its dependency on its Latin American neighbours, but LNG remains a relatively expensive source of energy.
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