Lagoa Comprida serves as the primary reservoir for the hydroelectric system, holding water captured from the glacial plateau.
The reservoir's dam structure was significantly heightened in the early 20th century to increase its storage capacity for energy production.
It is situated within the Serra da Estrela Natural Park, which is the largest protected area in Portugal.
The location is subject to extreme weather conditions, including heavy snowfall during the winter months.
The water from the reservoir is part of a complex gravity-fed system that channels power through multiple downstream stations.
The geology of the area consists primarily of Hercynian granite, shaped by significant glaciation during the Quaternary period.
Central Hidroelétrica da Lagoa Comprida is a functional hydroelectric power station located in the Serra da Estrela mountain range at an elevation of approximately 1,600 meters. The facility manages water resources from the Lagoa Comprida, the largest reservoir in the Serra da Estrela, serving both energy production and regional water supply roles. The surrounding landscape is characterized by high-altitude granite glacial valleys and sparse alpine vegetation. The infrastructure is integrated into the complex water management system of the Estrela massif, which captures snowmelt and rainfall. The site is a key technical point within the broader hydroelectric system managed by EDP. Visitors encounter an industrial landscape set against the backdrop of the Serra da Estrela Natural Park. The area provides access to high-altitude trekking routes that skirt the perimeter of the reservoir.
The crest of the dam wall offers the widest vantage point over the reservoir and the surrounding glacial peaks.
Bring windproof and waterproof clothing regardless of the season, as high-altitude weather changes rapidly.
Ensure your vehicle is prepared for steep, winding mountain roads and verify weather conditions, especially for potential road closures in winter.
Sturdy, high-grip footwear is essential for walking on the rocky, uneven terrain surrounding the reservoir.
Attempting to visit during winter storms or heavy fog, as the mountain roads become hazardous and visibility drops to near zero.
Access may be restricted or entirely impossible during winter due to heavy snow accumulation on the ER339.
Stay within marked trail boundaries to protect the fragile high-altitude ecosystem; do not attempt to access industrial areas.
