In the span of one year, participating companies commit to reducing their energy consumption.
With the possibility to register one or more buildings, they mobilize their teams on energy saving practices.


Download the contest presentation


A building’s energy consumption is the product of three factors: the intrinsic thermal qualities of the construction, the technical-operational performance, and the good/poor usage practices of the occupants. While it is easy to work on the first two technical aspects, it is harder to “work on” the human factor, or leading the occupants to a responsible usage of the space.

The Contest for better Usage and Building Efficiency (CUBE) is a general interest initiative, aiming to help commercial building users to efficiently reduce their energy consumption by deploying use-levers, better steering and operations, and by providing a fun and motivational competition setting among the candidates.

How does it work?

Throughout one year, users of participating buildings must reduce energy consumption. Each month, the candidate-buildings’ energy consumption is collected on a dedicated platform. It is then compared to the historical consumption of the building, to measure savings. Energy savings are achieved due to operational improvements, light-technical modifications, and the mobilization of occupants through environmental awareness and actions.

Since every action counts, awareness campaigns are conducted on site for users (training workshops, half-days, etc.), so that everyone adopts environmentally responsible behavior in the workplace! Once calculations are finalized, we categorize participants based on their progress. At the end of the competition, a final ranking is provided and the winners announced!

Significant communication accompanies the contest in order to showcase the companies’ involvement and the best results in each category.


By entering the contest, the committed company or organization expressly authorizes the French Institute for Building Performance (IFPEB) to use its corporate name, its logo, and the number of buildings it has registered in the contest, on the CUBE website, in the newsletters & at the launch and closing ceremonies. The distinctive signs/logos can be used (along with those of all other candidates) in communications resources and presentations regarding the contest.

Sincerity of the consumption data

The reported data remains auditable through a simple request made by the organizers. The winners of each category are audited by the contest organizers.


To register for the competition, go to the  ‘Registration’ page on the CUBE website.
The application consists of:

  • Entering the contact details of the committed company or organization that seeks to register (a) building(s)
  • Proceeding with payment to cover the registration fee
  • Registering the candidate building(s)!
January 2021Registration opens!
July 2021Contest begins!
June 2022End of the competition. 3 months later: Award ceremony!


Candidate Resource Kits

A CUBE communication kit is given to the candidates (in electronic form). It contains the following various documents:

  • “CUBE Candidate Company” and “competing buildings” logos, which can be used in the internal and external communication of the company, posters, stickers, etc.
  • Technical instructions
  • A deployment guide
  • Feedback of previous contestants

The committed companies/organizations are allowed to communicate internally or externally about their participation in the contest CUBE with the supplied communications support.

Tips for optimisation

Besides mobilizing building occupants, operational optimization is highly recommended. Some ideas include:

  • Setting point temperatures adjustment
  • Programming the BMS to an adapted efficient use
  • Computing resource optimization (turning off unused devices, eliminating low-power standby options)
  • Implementation of local switches
  • And many more!

Communications & Events throughout the competition

Continuous communication, updates & events are provided to candidates from the beginning to the end of the contest. Some examples of what this will consist of:

  • Four CUBE informational candidate meetings
  • Press releases during key moments (to announce rankings, progress made, provide interviews, articles, etc.)
  • A website, relay websites such as and
  • A launch event
  • An Awards Ceremony
  • News about the challenge in the media by our media partners

The candidate representatives (national contacts) receive our updates & are invited to our various events. Throughout the contest, the best stories, candidate interviews, and the most original initiatives are highlighted in our newsletters & shared with all candidates periodically.


SAVE 5 to 25% on
your annual energy bill
per site!

PROMOTE a sustainable

MOBILISE your teams
for a good cause
while having fun

TAKE ADVANTAGE of the media
exposure of
gained with CUBE


  • Access to the interface that tracks your consumption (compared to previous years), your progress, your savings and competition rankings
  • Provision of a communications kit for internal and external use (logos, posters, etc.) to display and promote your participation
  • The right to communicate on your participation
  • The possibility of organising an internal “sub-competition” between several buildings from the same company/organisation
  • A good practice guide and feedback from the first editions of the competition
  • Media partner broadcasts
  • An invitation to the opening and closing ceremonies
  • Participation in 4 half-days to shed light on energy performance levers in commercial buildings


Participating buildings are placed into categories,
and earn individual medals
based on progress in their category.

  • Platinum Medalmore than 25% energy savings,
  • Gold medal20 to 25% savings ,
  • Silver medal 15 to 20% savings,
  • Bronze medal 10 to 15% energy savings.

The winners of each category
earn the top three prizes on the podium



Categories of the contest in 2019

Our building candidates feature distinct characteristics (for instance certified or non-certified, state-owned or private, etc). These characteristics are used to categorize candidates and rank their progress accordingly:

  1. Certified in operation office buildings (HQE, BREEAM In Use, ISO 50001)
  2. Non-certified office buildings (potentially assigned to homogeneous sub-categories if there are too many candidates)
  3. Educational buildings
  4. State-owned buildings
  5. Public buildings (non-educational)
  6. Semi-industrial buildings


1st, 2nd & 3rd place prizes are awarded in each category, with contestants receiving the following prizes: a gold CUBE, a silver CUBE and a bronze CUBE.

Also in the spotlight and on the podiums, are contestants whose good performance was largely due to good collaboration among the following:

  • Users and landlords
  • User and advisor in charge of energy efficiency (facility manager, consultancy, energy manager…)
  • Apartment buildings, a manager and the residents (represented by a residents’ council)

This kind of positive collaboration (selected & approved by IFPEB) will be showcased by having all parties included on the podium and with a press article.

Some thematic prizes:

  1. Most greenhouse gas reduction
  2. “Best improved” among a single company’s registered building stock (more than 5 buildings)
  3. Overseas buildings (French or otherwise)
  4. Most creative communication campaign


Candidate Confidentiality

The candidates’ contact details remain confidential. Any candidate registered in the competition is guaranteed the right to rectify, correct, or erase the data reported through a simple request.

As CUBE is a general interest program, the candidates will not be, in any way, commercially canvassed concerning assistance with energy savings as part of the contest, unless explicitly requested by the candidate. The reported data will not be used commercially.

Consumption data

The sites description data and the energy consumption data collected during the contest will not be released to the public at any time, except synthetically to cite the three winners of each category of the contest.
In the monthly rankings, only the name of the Top-twenty candidates and the name of the top three winning candidates of each category are announced.

The participants grant the possibility to use consumption data collected for the statistical results of the contest (total savings on average made by all of the candidates during the competition, standard deviations, or any other statistical interpretations, etc., without any reference to the buildings, the company or the organization.)