Background Field works for the Baixo Sabor Complex in Bragança, Portugal, started in 2008, with production beginning in 2016. There are two dams and a hydroelectric power station located in the Sabor River. They can generate 189 MW of power, with annual average production of energy at 460 GWh (230 GWh net). The reservoir created by the upstream echelon stretches over 60 km, and the reservoir created by the downstream echelon is about 9.6 km in length. This reservoir more than doubles the storage capacity of Portuguese water in the Douro River. Challenge The project is the largest recent power generation project in Portugal. The complex is designed to provide 20% of the nation’s energy reserve and to provide support for other hydroelectric power plants. It is located in an area o

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