A performance-based international initiative revealing the buildings achieving the largest real energy savings and shaping tomorrow's standards.
The World Championship for Energy Savings (WCES) is a global initiative launched with UNEP's Global Alliance for Buildings and Construction.
It identifies and showcases buildings delivering the strongest measured energy and carbon performance.
No pledges. No simulations. Only results.
Buildings submit real energy data and demonstrate performance improvements over time.
Performance is calculated using a standardised performance methodology. Buildings compete within national leagues or directly at the international level.
Top-performing buildings are showcased globally and crowned at the International Sustainable Buildings Competition during COP31.
Benchmark your assets, gain international visibility and position your portfolio among global leaders.
Identify national champions and leverage real-world performance to inform policy.
Access a curated pipeline of high-performing assets and market-leading practices.
Countries endorse the initiative and establish national energy leagues. These leagues identify top-performing buildings domestically and form national delegations competing on the global stage.
Each year, the best-performing buildings worldwide are revealed and recognised at COP, in front of governments, industry leaders and international institutions. This year, the World Champions will be crowned at the International Sustainable Buildings Competition ceremony during COP31 in Antalya, Türkiye.
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Verified high-performing buildings representing their country.
La Défense, France
Montpellier, France
London, United Kingdom
Collégien, France
Riedisheim, France
Paris La Défense, France
Submit your building and receive your performance level. Choose whether to publish and represent your League.
Register your building
