The 20 megawatt (MW) solar power tower produces electricity with large movable mirrors called heliostats.

Each heliostat, with a surface area of 120 m2 (1,300 sq ft), reflects the solar radiation it receives onto the receiver, located on the top of a 165-metre-high (541 ft) tower, producing steam which is converted into electricity by a turbine generator.

They will include low- and high-concentration photovoltaic, tower thermoelectric, parabolic-trough collector and Stirling dish plants.

"[4] Resulting from cooperation between Ciemat, the IDAE, and the University of Seville, the whole plant is to be completed by 2013, when it will produce approximately 300 MW – energy for around 180,000 homes, equivalent to the needs of the city of Seville.

PS20 produces about 48,000 megawatt-hours (MW·h) per year, for which it receives €271 (US$360) per MW·h under its power purchase agreement.