The official magazine of European Energy Efficiency Day 2026 brings together ideas, insights and inspiring projects showcasing the people, innovations and solutions driving Europe’s energy-efficiency transition.

With 29 articles and a foreword by Commissioner Dan Jørgensen, this edition invites us to reflect on what system efficiency really means and the role each of us plays in shaping a more efficient, competitive and secure European energy system.

On the printed version, the silver, mirror-finish title of the magazine helps to reflect on what system efficiency means. As you look at the title, you see yourself reflected in it, whether you are a policymaker, an industry leader, a civil society representative or another stakeholder. Because system efficiency is you: we are not separate actors, and we all have a role to play to make our energy system more efficient, competitive and secure.