The Nangbeto Dam is an embankment dam on the

Mono River The Mono River is the major river of eastern Togo. Approximately long, and draining a basin of about , it rises between the town of Sokodé and the border with Benin, and flows south. Along the southern portion of the river towards its mouth, ...

in the Plateaux Region of

Togo Togo (), officially the Togolese Republic (french: République togolaise), is a country in West Africa. It is bordered by Ghana to the west, Benin to the east and Burkina Faso to the north. It extends south to the Gulf of Guinea, where its c ...

. It was constructed between 1984 and 1987 for the purpose of providing hydroelectric power to both Togo and

Benin Benin ( , ; french: Bénin , ff, Benen), officially the Republic of Benin (french: République du Bénin), and formerly Dahomey, is a country in West Africa. It is bordered by Togo to the west, Nigeria to the east, Burkina Faso to the nort ...

as well as creating fisheries and supplying water for irrigation. The dam's power station was commissioned in June 1987. The project was financed by the

World Bank The World Bank is an international financial institution that provides loans and grants to the governments of low- and middle-income countries for the purpose of pursuing capital projects. The World Bank is the collective name for the Inte ...

and

African Development Bank The African Development Bank Group (AfDB) or (BAD) is a multilateral development finance institution headquartered in Abidjan, Ivory Coast, since September 2014. The AfDB is a financial provider to African governments and private companies ...

at a cost of US$98.22 million. The objectives of the dam were to satisfy the medium-term requirements of Benin and Togo for power, and to provide a large water reserve, amounting to 1.7 billion cubic metres. It was expected that 1000 to 1500 tonnes of fish would be produced each year and that 43,000 hectares of land would be irrigated. Evaluation of the project six years later showed that the project had been completed on time and on budget to a satisfactory standard. The project was a good example of cooperation between the two countries. The power generation objective was satisfied but the fish development scheme had failed and the irrigation project was proceeding at a slower rate than expected. However, initial results of the cultivation of rice on the irrigated land were encouraging. The Nangbeto Dam serves part of Togo's needs for electricity and is subject to interruptions in supply when the water level is low, which may happen for periods of several months. As a result, a further dam on the Mono River further downstream at Adjaralla is being constructed, starting in 2016. The fish production scheme involved in this project and other environmental issues are being planned at an earlier stage in its development.

Rehabilitation

In 2017, ''Communauté Electrique du Bénin'', the electric grid operator in Togo and Benin advertised for a company to undertake the rehabilitation of this power station which had not undergone any major overhaul since commercial commissioning in 1987. Voith Hydro, a German manufacturer and installer of hydromechanical and electricity hardware was selected to rehabilitate and modernize the two 32.5 megawatt turbines. The contractor will work on one generator at a time, in order to maintain output from the turbine that is not under repair/rehabilitation. The work expected to last until the fourth quarter of 2022, cost US$25 million.

References

{{stack, {{Portal, Africa, Water, Renewable energy Dams in Togo Dams completed in 1987 Energy infrastructure completed in 1987 Plateaux Region, Togo Hydroelectric power stations in Togo