Valle 1 and Valle 2 | Torresol Energy
  • SENERtrough® parabolic trough collectors reduces the costs of harvesting energy and building the plant

  • Valle 1 and Valle 2 prevent the emission of more than 95,000 tonnes of COevery year


Parabolic trough collectors of the SENERtrough® type, which concentrate solar radiation in a central collecting pipe through which thermal oil circulates


Valle 1 and Valle 2 each have a thermal storage capacity of 7.5 hours.


It supplies clean and safe energy to 80,000 homes and reduces CO2 emissions by more than 95,000 t / year.

Valle 1 and Valle 2 are two adjacent solar plants that generate electricity by means of parabolic trough collectors, located in San José del Valle (Cádiz, Spain).

Characteristics of Valle 1 and Valle 2:

  • Electric power generation: 50 MW
  • Net electric production typically yielded to the grid: 136-145 GWh/year
  • Solar field: 510,000m2 of SENERtrough® parabolic trough collectors
  • Thermal storage system: each of the plants has 7 hours’ capacity, which means the stability of the electricity grid can be sustained for 2,900 hours per year at full charge.

The use of concentrated solar radiation as a primary energy allows Valle 1 and Valle 2 to prevent the annual emission of more than 95,000 tonnes of CO2.

In this regards, each of the plants supplies clean and safe energy to more than 40,000 homes.

Parabolic trough collectors technology

The construction of Valle 1 and Valle 2 used the best parabolic trough collectors technology available at the time, SENERtrough®, whereby solar radiation is concentrated into a central collector with thermal oil circulating through it. These collectors have a high-precision optical sensor that follows the sun from east to west. The hot oil is used to vaporize water, which, by expanding in a steam turbine, activates an electricity generator that feeds the power to the grid.

These collectors, which were previously developed and qualified by SENER, incorporated design improvements that reduced the costs of harvesting energy and building the plant.

The Valle 1 and Valle 2 plants allowed for the incorporation of a second-generation of parabolic trough collectors, the SENERtrough®-2 system, which is now present in the world’s main solar thermoelectric energy plants, such as the NOORo solar complex in Morocco, and several plants in South Africa.

How it works

Click on each of the components of Valle plant and discover how it works.

Image gallery


Plantas Valle 1-2 Ctra. A-389 p.k. 11+250  11580 San José del Valle (Spain)

(+34) 956 35 86 40


The environment, safety and health are underlying mainstays of the activity of Torresol Energy.