More ‘deadly’ heat is on the way: Can Europe’s waterways cool us down and replace air con?

illuminem summarises for you the essential news of the day, reviewed by our editorial team. Read the full piece on Euronews or enjoy below:

🗞️ Driving the news: Europe is increasingly exploring district cooling systems as a low-carbon alternative to conventional air conditioning to mitigate extreme heat risks during record-breaking heatwaves
• Cities are leveraging local water bodies, waste heat, and geothermal energy to cool buildings efficiently while reducing emissions

🔭 The context: Heatwaves across southern and western Europe are reaching dangerous levels, with temperatures exceeding 40°C in Spain, Portugal, and France
• Air conditioning, while life-saving, is energy-intensive, contributes to urban heat islands, and drives up electricity demand
• District cooling networks distribute chilled water from central facilities or natural sources to multiple buildings, enabling collective, energy-efficient cooling
• Cities like Marseille, Paris, Barcelona, and Vienna are expanding these systems to protect populations and reduce carbon emissions

🌍 Why it matters for the planet: District cooling dramatically lowers greenhouse gas emissions, reduces electricity consumption, and curbs refrigerant use compared to conventional air conditioning
• For example, Paris’ Seine-based system cuts CO₂ emissions by 50%, and Barcelona’s thermal network has reduced fossil energy use by 96%
• These systems offer a scalable, sustainable way to adapt urban areas to climate-driven heat extremes while minimizing the carbon footprint of cooling infrastructure

⏭️ What’s next: The EU’s Energy Efficiency Directive mandates local heating and cooling plans for cities over 45,000 inhabitants, driving further adoption of district cooling
• Expansion projects, such as Vienna’s €90 million investment, aim to integrate multiple energy loops and reuse waste heat, ensuring seasonally efficient systems capable of handling growing heatwave frequency

💬 One quote: “District cooling offers clear benefits for cities aiming to safeguard public health and cut emissions.” – European Commission

📈 One stat: Paris’ Fraîcheur de Paris network delivers over 100% energy efficiency, reduces electricity consumption by 35%, and cuts refrigerant emissions by 90% for approximately 850 connected buildings

Track the real‑world impact behind the sustainability headlines. Illuminem’s Data Hub™ offers transparent performance data and climate targets of companies driving the transition.

Click for more news covering the latest on climate change, and subscribe to our newsletter for the stories shaping the future of sustainability.