Visit of Challenger, Bouygues Construction positive-energy head office !

More than 20 years after it was originally constructed, Bouygues Construction has decided to undertake a complete refurbishment of its head office, Challenger, located in Guyancourt, to the west of Paris.

Bouygues Construction’s intention was to limit energy consumption on the site to make it a flagship example of sustainable renovation. Furthermore, the Group wanted to improve the comfort of its employees (rethinking of the work spaces, redesign of car parks and optimization of acoustic and thermal insulation). New interior features in Challenger offer the highest possible comfort, performance and safety.

Challenger brings together new-generation equipment designed to achieve optimal management of energy and a reduction of their consumption. Taking account of the environment in all its dimensions, Challenger uses the site’s natural resources – sun, water and land – to produce the green energy it requires to operate.

The majority of glazed facades were replaced by a ventilated double-skin facade to improve the thermal performance of the outer shell. This facade improves the insulation of the building thanks to the circulation of natural air between the interior double glazing and the exterior single glazing. Considered very much a natural resource, the ground surrounding the buildings has geothermal devices installed in it. To make the best possible use of solar energy, more than 25,500 m2 of photovoltaic panels are distributed over the terraces, the solar farm and the roofs of the Cockpit and the technical building.

Challenger is also equipped with an installation for recycling and reusing wastewater and stormwater by a phyto-purification system. 

Today, Challenger is more than a pleasant and efficient working space for some 3,200 employees. It is also a showcase displaying Bouygues construction’s know-how and expertise, and is one of the first positive-energy commercial buildings.

Challenger has become the first building in the world to achieve triple certification: LEED®, HQE®, BREEAM®. It also features a control room (the Cockpit) running the Hypervision® system. This room measures the consumption, production and recovery of energy.

Visit of Linky lab, the smart meter laboratory developed by ERDF !

ERDF manages the public electricity distribution network for 95% of continental France. Every day, its 35,000 employees oversee the operation, maintenance and development of a nearly 1.3 million km network.

Today's electric meters are mostly electromechanical meters: they measure consumption and require a technician if a change in power or an outage occurs. Linky is a communicating meter, able to receive orders and transmit information remotely. Installed in end-consumer’s properties and linked to a supervision center, it is in constant interaction with the network. This is what makes it "intelligent".

In 2010, over 250,000 Linky meters were installed by ERDF

Linky lab

In order to secure a 20 year lifetime for the Linky smart meters, ERDF has conceived its very own laboratory. Linkylab is the first smart meter laboratory in Europe. Fifteen different types of products, thousands of meters are tested and stored in this facility.

The purpose of this lab is to ensure the meters can evolve as quickly as our current environment, to meet clients’ future expectations, at the heart of digital transition.

By 2021, the Linky smart meter will gradually replace the electricity meters for 35 million clients in France. 

Technical and economic impact studies, electricity consumption reports, fuel poverty analysis, optimization of renewable energy connections, smart grid demonstrators and support for highspeed broadband are features in the range of solutions promoted by ERDF and form part of its low-carbon development strategy.

Visit of Green Office® Rueil, an example of positive energy office building developed by Bouygues Immobilier !

Located in the heart of a mixed development zone in Rueil-Malmaison, west of Paris, and designed by the architect Jean-Michel Wilmotte, Green Office® Rueil is a positive-energy building: in the course of a year, the building produces more decarbonised energy than it uses for its operation. 

Divided into two separate buildings, this Green Office® is a combination of energy performance and user well-being. Green Office® Rueil boasts a bioclimatic design. Giving priority to natural light and ventilation, it reduces the amount of energy consumed by occupants.

Features include: an innovative active plate system which transforms the building's concrete floors into a heating or cooling storage system ; heating, air-conditioning and ventilation using geothermal heat from the water table ; a central energy control system that offers automatic management of lighting, heating, blinds and air-conditioning, continuous information about the building's energy consumption and production, and 4,000 m2 of photovoltaic panels producing renewable energy.

All these cutting-edge technologies mean that the minimum energy consumption of Green Office® Rueil is 35-40% less than the requirement under 2012 Thermal Regulations. In addition, even this low consumption is offset by a photovoltaic power plant

A symbol of Bouygues Immobilier's innovative approach to sustainable development, Green Office® Rueil has both BREEAM® International certification, the most widely used environmental evaluation system for buildings in the world and HQE® High Environmental Quality certification. 

Visit of Bolloré Group Blue Solutions Operational Center !

We are living in an era where issues of sustainable development and electricity storage have become major challenges. In this context, the Bolloré Group has developed solutions for production, storage and smart consumption of electricity.

The Group has perfected batteries and electrical storage solutions based on a unique technology: the LMP battery (Lithium Metal Polymer).

This Business Tour offers you a unique opportunity to visit the operational center developed by the Bolloré Group: Blue Solutions, which brings together electricity storage activities and mobility solutions.

One of the most famous achievement of Blue Solutions is Autolib’, the first 100% electric car-sharing system. This system has been implemented in Paris since December 2011, offering its inhabitants a new means of transportation both economical and practical, revolutionizing their transportation behavior.

Following the success of Autolib’, the Group continues to develop new 100% electric car sharing services in France and around the world, alongside other mobility solutions such as trams, buses and even boats.

Today, Blue Solutions comprises more than 300 scientists, engineers and technicians who manufacture these high technology batteries.

Visit of Clichy-Batignolles new Eco district !

The new Eco district Clichy-Batignolles has developed within a northwest Parisian territory. Clichy-Batignolles is an experimental site of Paris environmental policies, notably through the implementation of the Climate Plan and of the Biodiversity Plan.

In the district, buildings energy needs are widely covered by renewable energies thanks to geothermal wells created by Eau de Paris. Eau de Paris has realized an innovative work combining both household heating and water supply in case of water shortage. Today, 83% of Clichy-Batignolles needs of heat are covered by this well.

In ten years, it will represent a saving of 35,000 tons of CO_​2 emissions.

In order to reduce even more the carbon footprint, incompressible consumptions (such as elevators, public lighting) are compensated by the development of photovoltaic electricity with 40, 000 sq.m of panels producing 4,500 MWh per year. 

Regarding water management, the project aims to reduce by 50% rainwater discharges with a recovery system. 

The Eco district is also using innovative technologies for environmental waste management. Inhabitants benefit from the first Parisian installation of pneumatic collection of waste. The use of such a system of collection by underground inhalation enables to dramatically reduce noise and pollution.

This new technology integrates with a global prevention, recycling and waste recovery plan. It allows to reduce by 42% greenhouse gas emissions, by 98% carbon monoxide, by 86% nitrogen oxide and by 90% particle emissions.