The project consists of a complex of blocks with three floors and a common underground parking area, spanning approximately 14,500 square meters. The project features 23 energy wells, each 300 meters deep, and a heat pump. The building’s energy sources include electricity from the grid and solar panels. Each block’s roof is entirely covered with solar panels, producing around 21 kWh/m² per year. This results in a net delivered energy of minus 49,000 kWh per year, making the building energy-positive by producing 2 kWh/m² per year.

Photo: Daniel R. Seljebø

The Powerhouse concept emphasizes the use of low carbon materials. The project achieves a reduction in greenhouse gas emissions by 19.4 kg/m² per year compared to the Powerhouse reference building. This is accomplished through several measures, including the use of hollow core slabs with low-carbon concrete, reinforcement steel with low emissions per kg, and gypsum boards with low emissions per m².

Photo: Daniel R. Seljebø