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Take positive climate action with CUBE

A UK wide, yearly competition delivering energy savings in commercial buildings

What can really be achieved in less than a year?

Money saved


across 30 UK buildings

Energy slashed

Annual savings

15 GWh

enough to power London's underground and overground rail networks for over 3 days 


projected from top performers

Image by Luca Bravo

Calling all landlords, building managers and occupiers

By working with occupiers on behaviour change and minor technical updates, and without major investment, we can transform our energy performance in office buildings.


CUBE is the competition that saves energy – one building at a time.

As featured in

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We are wasting energy in avoidable energy bills

We're wasting millions in  avoidable energy bills

Success is about teamwork, collaboration and community

Achieving net zero carbon is only possible if everyone acts together.  UK landlords and occupiers, and their employees, can make a real difference. 

Image by Daniel Funes Fuentes
Engaging occupants unlocks massive savings

Engage, have fun, make a difference

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Get Started

Join the competition

Set a baseline

Understand usage

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Identify where savings can be made

Align building management to

user behaviour 

Embrace our proven programme

and toolkit

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Make an impact 

Engage everyone

Effect change

Celebrate success

CUBE has a proven formula and
a strong track record

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Operating for

6 years

12 countries


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Keep green teams beyond the competition

Stacks of Coins


Savings in the first year for top-tier participants across countries

Join the growing CUBE community

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I'm interested in saving energy

Register interest and learn more about the CUBE competition


Season 2 registration now open!

Thanks for submitting!

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