On the 2nd of February 2024, João Baptista Borges, the Minister of Energy and Water, presented the progress in constructing the Caculo Cabaça hydroelectric dam, situated in the Cambambe region of Kwanza Norte. His update followed discussions with the Technical Committee overseeing this extensive project. Significant advancements have been noted in the excavation of both water return tunnels and the access tunnel leading to the generator hall, with these tunnels stretching five kilometers and measuring 16 meters in width, set to accommodate the turbines. Borges mentioned that the construction progress of these tunnels is at roughly 22% for one and 11% for the other.
Borges spoke on the intricate process of tunnel excavation, pointing out that the challenges encountered in this phase are likely to delay other components of the hydroelectric complex, necessitating schedule adjustments to align with agreed timelines. He attributed these delays to unforeseen technical and geological challenges during the initial planning phase and financial issues, such as postponed payments to inspectors and project designers, which are vital for keeping the project on track. Borges reassured that there are ongoing discussions with the Ministry of Finance to address these financial challenges and advocated for regular interactions between all parties involved to prevent further delays.
Despite these hurdles, the project director, Augusto Chico, indicated that the project’s physical completion stands at 14.07%, with financial execution at 15%. He highlighted the significant completion of infrastructure works, paving the way for accelerated dam construction. The commencement of energy production at the Caculo Cabaça dam is expected by October 2026, starting with the first turbine’s activation.
Launched in 2017 with a budget exceeding five billion dollars, the project employs about 2,500 people, mixing local and international expertise. Financial backing includes a substantial contribution of 4.5 billion dollars from the People’s Republic of China for the civil construction of the dam and related transport infrastructure, and a 1.02 billion dollar investment from Germany for the electromechanical equipment’s procurement and installation.
The Caculo Cabaça hydroelectric venture aims to add 2,172 megawatts (MW) of electricity to the network of dams along the middle reaches of the Kwanza River, joining other facilities at Cambambe (Cuanza Norte), Capanda, and Laúca (Malanje). The construction is under the China Gezhouba Group, a state-owned corporation. Borges also took the opportunity to inspect the ongoing construction efforts at the site, including the main power station, tunnels, the dam structure, construction yards, bridges, and other essential facilities
