M'tera Hydroelectric Plant, Tanzania

The M'tera underground hydroelectric power station, built between 1984 and 1988, is located near the M'tera Dam, at the confluence of the Rufiji and Great Ruaha rivers in Tanzania. The M' tera project was commissioned by the National Energy Society as part of "The Great Ruaha Power", a larger initiative started in 1969 and strongly supported by the Tanzanian government to reduce fuel imports.

The plant is composed of a suction tunnel that conveys the water towards the turbines of the underground power plant and a discharge tunnel through which the water flows towards the river. The power plant has an installed capacity of 80 MW, significantly contributing to the country's energy stability.

The M'tera dam, associated with the power plant, is essential for water resource management and flood control, benefiting both agriculture and local communities.