TenneT's former head office at the Arnhems Buiten business park has been renovated and converted into one of the most sustainable office buildings in the Netherlands. It is now the head office of DNV GL's energy branch, which employs 2,500 energy experts worldwide. It is DNV GL's largest office building in the Netherlands.
The site accommodates about 400 DNV GL employees and covers about 10,000 m2 of office and lab space. The building has achieved an A energy label thanks to innovations such as the use of seasonal thermal energy storage, solar panels, HR +++ glass and a highly efficient heating and cooling system.
Boon Edam installed a sliding door at the main entrance, and three Speedlane Slide access gates and two Winglock 900 swing barrier gates in the central hall behind the main entrance to prevent unauthorised entry.