The Hydroelectric Power Station
The tour starts with a video about the construction and operation of the Hidroelectric Power Station at the Centre d'Interpretació de l'Aigua de Tavascan.
After a short walk, equipped with a helmet, we are ready to walk 500 meters inside the mountain named Pic de Gueron, to The Cave of Tavascan.
The complex
In the Cave there are two power stations: Tavascan Superior and Tavascan Inferior, and the original control centre (now the operation is from Lleida).
Tavascan Superior picks water from the lake Certescan (the bigger lake of the Pyrenees, with 100m depth) and Romedo de Baix through a 1.400 m long pipe and a drop heigh of 900 meters until the arrival in the Cave of Tavascan, where two pelton turbines receives 7 m3/s at 85 kg/cm2.
Tavascan Inferior takes water from the reservoir of Graus, through a 800 m long pipe and a drop heigh of 246 m, and arrives at a lower level from Tavascan Superior, in the same Cave. The turbine in this case is a Francis, and works with a flow of 14 m3/s and a pressure of 25 kg/cm2.
The complex also has the reversible power station of Montamara, that pumps water from Graus to Romedo at nights to store part of the excess of energy produced by nuclear and thermal plants.
This special visit is possible everyday at 17 hours, all the year, although you should book previously. It takes 1,5 hours and costs 7 €. It is not suitable for children under 6 years old.
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