Open to all buildings worldwide

The global stage for the world's most efficient buildings

A performance-based international initiative revealing the buildings achieving the largest real energy savings and shaping tomorrow's standards.

24%
Level : Silver
30%
Level : Gold
42 %
annual energy
savings achieved
Level : Master

What it is

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 highest reductions in real energy consumption based on measured data.

No pledges. No simulations. Only results.

How it works

1

Measure

Buildings submit real energy data and demonstrate performance improvements over time.

2

Compete

Performance is calculated using a standardized performance methodology. Buildings compete within national leagues or directly at the international level.

3

Be recognized

Top-performing buildings are showcased globally and awarded at COP.

Who it is for

For building owners & operators

Benchmark your assets, gain international visibility and position your portfolio among global leaders.

For governments

Identify national champions and leverage real-world performance to inform policy.

For partners & investors

Access a curated pipeline of high-performing assets and market-leading practices.

Discover our national leagues

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.

The COP moment

Each year, the best-performing buildings worldwide are revealed and recognized at COP, in front of governments, industry leaders and international institutions.

Learn more
COP moment

Meet our Champions

Verified high-performing buildings representing their country.

Ready to Compete?

Submit your building and receive your performance level. Choose whether to publish and represent your League.

Register your building