The dam and hydropower plant will be built along the Zambezi River in Tete province to the north of Mozambique and will generate 1,500 megawatts of power in the first phase.
“This is the first concrete step for Mozambique to capitalise on the immense hydropower potential of the Zambezi River and the country’s other energy resources,” Mozambique Energy Minister Carlos Zacarias said in a statement.
The new dam will provide low-cost electricity to the southern African country and help position it as a regional exporter of clean, renewable energy, he added.
The dam will link Tete to the capital, Maputo, via a transmission line of around 1,300 (800 miles).
The first turbine is expected to operate by 2031, officials say during a signing ceremony attended by senior French and Mozambican government officials, including President Filipe Nyusi.