EU energy policy targets data center efficiency and heat recovery

The European Union is moving toward stricter transparency requirements for data centers, which must disclose energy and water consumption through a new rating system. This initiative aims to manage the massive electricity demand driven by artificial intelligence and strengthen digital sovereignty.

Simultaneously, debates are intensifying regarding the Energy Efficiency Act. Critics warn that proposed exemptions for data centers—allowing them to bypass waste heat reuse requirements if cost-benefit analyses prove unprofitable—could result in the loss of 80 TWh of heat, valued at approximately 5.8 billion euros by 2045. Currently, many large facilities discharge over 97 percent of their waste heat into the air or water.

In the residential and municipal sectors, heat pump technology continues to evolve. Research from the Fraunhofer Institute indicates that heat pumps can operate efficiently in older buildings, provided flow temperatures are managed correctly. While installation costs for residential units range from 20,000 to 50,000 euros, long-term operating costs are often lower than gas. On a larger scale, municipal district heating is transitioning to electricity through large-scale heat pumps that extract thermal energy from rivers, wastewater, and seawater.