The headrace tunnel is 1,526 meters long. At its top end in the reservoir there is an intake tower in reinforced concrete which is 14 meters high and equipped with metal bars and a well where the operation and maintenance floodgates are housed. At the other end, the gallery has a 80 meter-high surge chamber, fully excavated in rock and covered in reinforced concrete.
The reservoir water reaches the hydroelectric plant, dropping the last 100 meters through a penstock which is 5.50 meters in diameter to begin with, narrowing to 4.30 and finally forking off to reach each turbine with 3 meter-diameter branches.
The energy produced by the hydroelectric power station is transported to the city of San Juan along a high voltage 132 KV line which is 47.9 kilometers long.
El agua del embalse llega a la central hidroeléctrica, descendiendo los últimos 100 metros a través de una tubería forzada que se inicia con 5,50 metros de diámetro, luego se reduce a 4,30 y, finalmente, se bifurca para llegar a cada turbina, con ramales de 3 metros de diámetro.
La energía producida por la central hidroeléctrica es transportada hasta la ciudad de San Juan mediante una línea de alta tensión de 132 kilovolts y de 47,9 kilómetros de longitud.