Bouygues Construction has said that the Northern Triangle, the first of its Challenger headquarters buildings in Guyancourt, France, has secured triple LEED, BREEAM and HQE certification.
Bouygues carried out renovation of 67,000m² of buildings and constructed a cockpit featuring the control centre and showcase.
The company installed 21,500m² of photovoltaic panels, 420m² of thermal solar panels, 75 geothermal sensors and a phyto-purification system.
Bouygues said that primary energy consumption on the site will be reduced by ten times and the annual water consumption will be reduced by 60% by comparison with the original data.
Exprimm, a subsidiary of Bouygues, will manage the maintenance and operation of the site.
The Challenger renovation works started in 2010 and are expected to complete in the third quarter of 2014.
Bouygues delivered the second building of the headquarters, known as the South Triangle, in August 2012.
Upon completion of renovation, all the buildings on the site are expected to secure triple certification.
Bouygues said that it sees triple certification as a reward for all the efforts made to ensure that the site complies with the most stringent environmental guidelines.
The company has systematically incorporated eco-design and environmental considerations in the construction of buildings and structures since 2007.