The Group is committed to the progressive reduction of its water needs in all of its production processes, where possible promoting its internal reuse. Among the optimization interventions realized, in some coal-fired power stations the blowdown from the closed-circuit cooling towers is reused in desulphurization plants, whereas the use of crystallizers downstream of the desulphurizes allows for the total recovery of the wastewater. Furthermore, in other plants the storage tanks have been destined to the collection of rainwater, in this way making it available for process needs.