This building will be located in the business district located in Pederstrupvej in Ballerup. The development process is expected to be completed in 2011. Simple architectural design has resulted in a building that is flexible and easy to understand consists of three elements: the ground floor meeting room, atrium uniting and workstations on the floor above, which floats on the sloping landscape. atrium is to create an identity, an open and active. This building has an annual energy consumption of only 48.8 kWh/m2. Insert the solar panels, ground water cooling and heat pumps in the project will reduce annual consumption for only 35 kWh/m2. An important part of environmental objectives has been to ensure a high level of flexibility. The first floor layout is open and light walls and a simple, reusable elements will make it easier and problemfree to change the interior layout of the future. Through a simple architectural design, building an office in Ballerup Energinet.dk space is divided into public and non-public. The ground floor consists of public facilities while the first floor of the building houses all the offices – are placed in the layout of a flexible and sustainable. The top floor floating above the landscape. An atrium unites all people to welcome the buildings and light and open design gives a good overview of the various functions. Design, dynamic and active open atrium reflects the values of Energinet.dk. The building is located at the highest point of land. This guarantees a beautiful panoramic view of the surrounding landscape and bring a bit of land sloping to the building. Floor of the building structure to follow the various levels of the soil and provide a good experience from the surrounding landscape. Use simple exterior materials and little to contribute to creating a strong contrast between the buildings and landscaping. This building has a clear and elegant design. Higher floor space ratio ensures that the number of rooms may be used for several purposes. The layout is open, light walls and floors the first floor will make it easier and trouble-free to change the office layout in the future. In addition, light and reusable materials to ensure minimal waste of resources in relation to possible conversion at future.Henning Larsen Architects has designed buildings with low energy only way to optimize the design and geometry – to produce an office building at the lowest possible energy classes. Buildings eligible for the low-energy class 1 according to the Danish building regulations without the use of technology for energy production. The offices feature three layers of low-energy windows and, in some places, the north-facing lamp on the head. The offices have only the direct sun from the west in the summer. This building has a sustainable green roof serves several purposes: It reduces the burden on the public channel system with slow percolation and evaporation. Also, rain water collected will be used for flushing toilets and watering gardens, which contribute to reduce overall energy consumption for cooling.