There were various activities of this nature at the Spanish thermal plants during at the Lada plant, an area was prepared for the collection of ammonia and other chemical products in order to improve the control thereof, and a system has been designed for reusing water from the pool; at the Escombreras plant, the consumption of potable water was reduced at the demineralised water treatment plant, reusing the industrial effluents generated, contributing 9.26 % of industrial effluents, reducing the consumption of potable water by 1,144 m3, and the dosage of sodium hypochlorite into captured seawater has been reduced, increasing the larval monitoring of mussels; at the Velilla plant, there was a complete overhaul of the water treatment plant and automation thereof within the plant’s control system, and the final flow meter control for water discharges was replaced by one with lower maintenance and easier calibration.