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Contents
An innovative and
sustainable approach
In order to achieve these high standards, Petzl worked with
Manaslu, an engineering company specialising in the energy
performance of buildings, renowned for its expertise and inno-
vative approach.
“This extension project will become a benchmark, combining
environmental performance, energy optimisation and user
comfort,” says Maxime Lebech, Chairman of Manaslu, who
also talks about ambitious technical choices and really hard
work to cut energy waste as much as possible
Properly analysing needs is crucial in addition to the stan
dard features this must also take into account potential fu
ture changes to the building and systems to enable the site to
evolve over time
Manaslu has developed an advanced methodology for moni
toring the quality of installed equipment combined with unique
tools for simulating testing and processing monitoring data
We worked together to optimise our technological choices
and minimise the environmental impact of each stage says
Philippe Perrier
For Maxime Lebech Petzls decision to commit to such an am
bitious project is really signif icant for future construction and
renovation projects within the group as well as for the regions
industrial buildings
French timber and technological
innovations
The entire structure of the extension was built using certif ied
French timber, and increased insulation and a heat recovery
system have been f itted. “Production equipment generates a lot
of heat, so we included systems to recover this heat and direct it
to the areas that need it,” explains Philippe Perrier.
On the other hand, a passive ‘free cooling’ system, which invol-
ves using outside air to directly cool a room, has been installed.
T
o complete the thermal regulation system, “high-performance
mechanical ventilation systems have been installed to ensure
constant air renewal while minimising heat loss,” he continues.
Automated brise-soleil (BSO) blinds have been installed to im-
prove light and temperature management depending on the
s
eason and time of day. Moreover, rainwater will be collected
and used to supply toilet facilities.
These installations provide optimum comfort for employees
while improving the overall energy ef f iciency of the new building.
Photovoltaic panels have been installed on the extension’s roofs.
They should supply part of the building’s energy needs, while
also providing a fresh source of income, since 20% of the so
-
lar-generated electricity could eventually be sold on.
A centralised management system provides real-time monito-
ring of energy consumption and equipment ef f iciency.
Teams will also receive training to ensure optimum use of the
new facilities: “These technical solutions have to be understood
and mastered by all users to get the most out of them,” says Phi-
lippe Perrier.
Renovation as a heritage duty
“We are planning a second phase to renovate existing buildings
and give them the same features as the extension,” continues
Philippe Perrier.
Renovation will begin after completion of the extension, sche-
duled for April 2025. This promises to be a technical challenge,
since it will have to deal with existing structural constraints. “We
need to completely overhaul the insulation energy systems and
even the interior conf iguration in order to maximise energy ef
f iciency while complying with current standards explains Phi
lippe Perrier
Among o
ther requirements the renovation process must en
sure that the work does not interrupt production activities on
site he adds This means rigorous planning and phased execu
tion to limit the impact on daytoday operations
While this o
ften requires more resources and f lexibility than
building something new the renovation is part of a sustainable
heritage policy that is important for the company We want to
preserve the heritage of this site while preparing it for the future
concludes Philippe Perrier
An ambitious project to meet
growing demand
We needed to modernise and expand our facilities to meet our
industrial ambitions recounts Philippe Perrier The aim was to
double the production of carabiners at the Savoyard plant which
has been in operation since 2002
The energy optimisation project for the 2000 m extension re
presents an investment of 16 million It was about more than just
extending the facilities from the beginning we were talking about
an overall transformation explains Philippe Perrier We wanted
to make Rotherens a model of sustainable construction
The Rotherens plant:
a model of sustainable
construction
Our plant in Rotherens has a twofold sustai
nable ambition of doubling its production of
carabiners and becoming a benchmark for
environmental progress Philippe Perrier Head
of Petzl Buildings in France tells the story of a
successful transformation
Philippe Perrier
Responsible for PETZL
buildings in France
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