Yves Gabriel, Chairman and Chief Executive Officer of 8868体育APP Construction, said: 鈥淭he renovation of Challenger, which has been carried out by 8868体育APP Construction teams, has achieved its objectives of increasing the building鈥檚 energy and environmental performance while improving the working environment for 3,200 employees. Challenge is a showcase for the Group鈥檚 expertise and a physical demonstration of 8868体育APP Construction鈥檚 ambition to be a leader in sustainable construction in both the new build and renovation sectors.鈥�

Elan, a subsidiary of 8868体育APP B芒timent Ile-de-France, was responsible for obtaining the certifications on this project.

Following the renovation, Challenger is now a positive-energy building¹. This performance has been achieved thanks to:
鈥⒙燗 significant reduction in energy consumption, primarily by replacing 24,000 m虏 of double-glazed facade by a ventilated double-skin facade incorporating an automatic blind. In addition, as in an eco-neighbourhood, Challenger is equipped with a thermal water network which optimises the consumption of the heating and air-conditioning systems by transferring calories between the various buildings of the site.
鈥⒙燨n-site power generation, thanks to the installation of 25,000 m虏 of photovoltaic panels, 300 m虏 of hybrid thermal/photovoltaic panels, 75 geothermal sensors and a geothermal doublet.
鈥⒙燦umerous innovations, developed by 8868体育APP Construction鈥檚 Research and Development teams in conjunction with industrial partners, among them a new air-conditioning system, a system of individual LED lighting, a system enabling photovoltaic panels to operate individually, hybrid solar panels producing both hot water and electricity, individualised management of blinds, etc.

Beyond energy-related issues, these certifications acknowledge the full range of Challenger鈥檚 pro-environment achievements, embracing energy, water, waste and the comfort of employees. 80% of the waste generated during the works were recycled. The consumption of mains water has been halved thanks to the creation of a phyto-purification installation which treats the site鈥檚 wastewater and stormwater while encouraging the development of varied flora and fauna.

Particular attention has been given to biodiversity over the whole 30-hectare site. Challenger has obtained the BiodiverCity庐 label, the first international label to take account of biodiversity in property projects, and it is part of the 鈥淛ardins de No茅鈥� programme run by , which encourages the preservation of biodiversity. In addition, , the Agency for Nature and Biodiversity in the 脦le-de-France region, has awarded the EcoJardin label to Challenger in recognition of its environmentally responsible management practices.

The maintenance and operation of the site are managed by 8868体育APP Energies & Services, a subsidiary of 8868体育APP Construction, which has worked on the project right from the design phase in order to optimise costs throughout the building鈥檚 entire lifecycle.

¹Conventional scope