Water usage: We optimise water management and ensure it is used in accordance with best practices.

The efficient management of water resources has become vital for the health of our planet. Iberdrola group makes every effort to use water rationally and sustainably and tackle the risks related with its scarcity.

 Committed to the Sustainable Development Goals

Rational water usage.


Origin of the usage.

The main problems identified by the Group regarding water are depletion, climate change and contamination, all of which it aims to minimise. In Iberdrola's case, the activities that could contribute the most towards resolving these problems are conventional energy generation techniques and administration (offices).

Committed as it is to respecting natural resources, Iberdrola exhaustively monitors its use and specific consumptions of water. This involves making year-on-year comparisons and looking for ways to optimise its production processes by using recycled water, reusing water across its production cycles, etc.

To achieve this, Iberdrola is constantly looking for the right method to avoid significant problems and implementing various measures aimed at more sustainable water usage.

The most representative actions in this field are:

1. Using water to generate energy:

Water is mainly used in the conventional energy generating processes.

  • Replace the least efficient technologies with renewables and combined cycle.
  • Monitor collection and discharge [PDF]:
    • Limit the collection and consumption volume of continental waters across all technologies.
    • Avoid water collection in areas suffering water stress.
    • Assurance of water quality when discharging.
    • Reuse and recycle water within facilities.
  • Continually improve the processes used at the facilities for lower consumption and impact.
  • Establish and monitor the surface threshold levels and the natural flow rates in the hydroelectricity generation reservoirs.

The following table shows the development of water use in thermal power generation, with the cause of the increase being due to two consecutive years of low rainfall:

However, Iberdrola's core policy to replace its least efficient technologies with clean and sustainable ones, such as renewables and combined cycle, is the main reason for the decrease in its net water consumption.

2. Office water consumption

Run awareness raising campaigns to achieve a more efficient and responsible use of domestic water by employees in the administration and control buildings.


Respect for this resource also involves preserving biodiversity, meaning that it is just as important to monitor water collection so as not to disrupt water ecosystems as it is to reduce the risk of spillages and, therefore, prevent contamination.

Iberdrola is implementing safety and contention measures to keep damage to a minimum: every year preventive actions are undertaken to prevent and reduce the impact of possible spillages, such as the construction of tanks for the collection of oil in the unlikely event of a mass spillage at substations and transformation centres or the waterproofing of spill trays and bunds.

Filtrations Project

The aim of the Filtrations Project is to create a new method for conducting efficient inspections in water canals.


 Environmental Policy [PDF]

 Environmental Indicators

 Water usage: sectors and utilities [PDF]