Alto Lindoso, Portugal
Laura Monikowska, Policy Officer for the International Hydropower Association chose the Alto Lindoso as her iconic dam.
The Alto Lindoso Hydro Power Plant, owned by EDP and situated in the Peneda-Gerês National Park in Portugal, stands as a testament to engineering excellence. Commissioned in 1992, this iconic dam is a towering arch-vault structure, reaching a crown elevation of 339m and a length of 297m. Rising 110m above its granite foundation, the dam’s unique multi-floor design includes a substation control building located 350m underground.
During its construction, the dam showcased cutting-edge technology, having the fastest elevator in Europe and the second fastest in the world. The magnitude of the project is underscored by the sheer scale of efforts involved, including excavations of 0.0012 km³, pouring 0.0006 km³ of concrete and using 3000 tonnes of steel.
With an installed power capacity of 630MW, generated by two high-performance Francis turbines, the power plant plays a pivotal role in Portugal’s energy landscape. Its annual production of 910GWh significantly contributes to meeting the energy needs of a substantial portion of the population.
Beyond its role in electricity generation, the Alto Lindoso dam showcases an innovative approach to flood prevention in the Lima River basin. The region, known for heavy rainfall, benefits from the dam’s total capacity of 0.379 km³, minimising the impact of floods in downstream areas such as Ponte da Barca and Ponte de Lima. This flow management involves advanced analysis of meteorological information and collaborative efforts between key stakeholders, emphasising the holistic impact of the dam on its surroundings.
The engineering marvel extends to the visitor experience as well. The underground station, situated 340m deep, not only serves as the heart of the power plant but also doubles as a unique venue for events, including musical concerts. A highlight of the visit is the roof of the engine room, which replicates the starry sky of Lindoso village during its construction.
Alto Lindoso forms part of the XFLEX Hydro project which is an €18 million initiative at the forefront of advancing hydropower capabilities. Through the initiative, this hydropower project is testing low-cost opportunities to extend its operating range and optimise power flexibility. This ensures the plant’s adaptability and resilience in the face of evolving energy demands, illustrating a firm commitment to sustainability in efficient hydropower practices. With projects like Alto Lindoso, XFLEX Hydro is demonstrating how flexible hydropower technologies can deliver a low-carbon and resilient power system.
This article first appeared in International Water Power Magazine.
