Meet the Water-Energy Nexus

We are thrilled to share our latest publication, an informative infographic highlighting the Water-Energy Nexus. In today’s climate and energy crisis, understanding the water-energy nexus is crucial for driving substantial savings in both resources while reducing emissions and enhancing European industry competitiveness.

Meet the Water-Energy Nexus infographic, developed by The European Alliance to Save Energy with the support of our members. 

Understanding the interdependent relationship between water and energy is crucial as we strive for sustainability and to combat the challenges of climate change. In these times of multiple crises, Europe is currently facing both energy and water crises. It is imperative that we join forces to address these challenges collectively. Recognizing the significance of the water-energy nexus, it is crucial for Europe to take decisive action and prioritize these issues without delay.

The infographic highlights:

– the connection between water consumption and produce energy

– the energy used to abstract and treat water

– the interlink between energy and water in sectors such as buildings and industry

This visual is a great tool to raise awareness about the water-energy nexus in relation to upcoming key moments of the ordinary legislative procedure related to:

Industrial Emissions Directive (IED)
Urban Wastewater Treatment Directive (UWWTD)
Nature Restoration Law (NRL)

View the full infographic here

View section 1 in detail
View section 2 in detail
View section 3 in detail


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Future of the Energy Union: bringing the transformative potential of energy efficiency in the National Energy and Climate Plans

As EU member states prepare to submit their revised National Energy and Climate Plans (NECPs) to the European Commission on 30 June, they must pay greater attention to energy efficiency, writes EU-ASE President Monica Frassoni in Euractiv.

A future energy system must be highly energy and resource efficient, based on renewables, secure, competitive, affordable and of course, safe. One that can respond to the climate, energy and water crises that increasingly perturb our economy and create social tensions.

Reducing energy needs and doing this through ready-to-use technologies and a system approach is key to success of Europe’s future energy union and the Green Deal. The Energy Efficiency community needs therefore to have a regular seat at the table.

This is not always the case.


Read the full article byMonica Frassoni in Euractiv.

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The water-energy nexus: connecting water saving, energy efficiency and the reduction of emissions.

Water and energy are probably two of the most essential, interlinked, and precious resources in our daily lives. In our current climate and energy crisis, unleashing the potential of the water-energy nexus will drive substantial water and energy savings, reducing emissions and increase the competitiveness of European industry, says Monica Frassoni in the Spring 2023 issue of European Energy Innovation Magazine.

The great thing is that we already have the technologies and solutions to simultaneously save water and energy.  A strong policy framework is needed to incentivise water and energy efficiency and enable the deployment at scale of these solutions. The water-energy nexus should be better reflected in legislation, and lawmakers should fully consider the benefits stemming from water efficiency as a key driver to delivering energy savings.


Read the full article byMonica Frassoni in European Energy Innovation Magazine. 

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A legislative framework supportive of the water-energy nexus: exploiting synergies between water & energy savings, 22 Sept 2022

On 22 September 2022, 12:00 – 13:30pm (CET) as part of the Extended Programme of European Sustainable Energy Week (EUSEW), the European Alliance to Save Energy (EU-ASE) hosted an online conference on the water-energy nexus to discuss how to design the best policy framework across the EED, UWWTD and IED.

The strong interdependencies that exist between energy and water are no longer to be demonstrated. Abstracting, distributing, heating, cooling or treating water requires huge amounts of energy while water is also used heavily in energy production and across many industrial processes.

The ongoing policy developments to unleash the potential of the water-energy nexus show progress is in the making but requires strong alignment between energy and water legislations. The panel will discuss how to ensure coherence across the EED, UWWTD and IED.


  • Agnese Danelon, Director, Government Relations Europe, Ecolab


  • Vania Paccagnan, Senior Global Policy Manager, Water at CDP Europe
  • Veronica Manfredi, DG ENVI, European Commission
  • AbdelKader Meroufel, WE Water Distribution infrastructure & Energy WG leader, Water Europe
  • Tania Pentcheva, Senior Government and Industry Relations, Xylem
  • Monica Frassoni, President, European Alliance to Save Energy

Watch the full session here

View full agenda here



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The water-energy nexus: an untapped resource for major energy savings

Water requires energy. When we move it, clean it, heat it and cool it—energy moves with it. These two precious resources come together seamlessly in our daily lives, but they can also jointly create significant energy savings. Unleashing the potential of the water-energy nexus will drive substantial energy savings to repower the EU while drastically reducing greenhouse gas emissions, says Hayati Yarkadas at Xylem Europe on Foresight Climate & Energy ahead of the first edition of the European Energy Efficiency Day. 

The water-energy nexus refers to the link between energy use in water management and water use in energy production. Water and wastewater infrastructure account for 3.7% of the global electricity consumption. The good news is that any efficiency gains in one benefits the other.

And by using high-efficiency technologies, we can cut half of that energy consumption at zero or negative cost. This would be equivalent to removing 9.2 million fossil-fuelled cars per year and it would free up $40 billion to invest in other types of water infrastructure.

The nexus also holds the potential to generate large-scale energy and water savings across sectors and drastically reduce greenhouse gas (GHG) emissions—an important element to address the impending climate change crisis.

We must move to an energy-neutral wastewater sector to achieve climate neutrality in Europe.


Read the full article here

More information on Energy Efficiency Day here & Register here.

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