Authorities in the Republic of Congo launched the country's largest dam on Saturday, mainly funded by China, an AFP journalist said.
The dam, which has a 120-megawatt capacity, was unveiled in Imboulou, about 260 kilometres (160 miles) north of capital Brazzaville.
"A central link in the energy network...the Imboulou dam comprises four 30-megawatt turbines. It has an annual capacity of 876 million kilowatts per hour," project official Jean-Jacques Bouya said during a ceremony attended by Congolese President Denis Sassou Nguesso.
Bouya said China met 85 percent of the dam's cost with the remainder coming from Congo.
Around 170 billion CFA francs (260 million euros/370 million dollars) went into its construction, undertaken by a team of 2,000 Congolese workers, 600 Chinese and 23 Germans, he added.
The dam on the Lefini River will benefit Brazzaville and a large section of the country's north.