“STACK has pioneered heat reuse technology at our data centers in the Nordics and we are proud to be contributing to such an important project,” said Halvor Bjerke, CEO at STACK EMEA – Nordics.Heat produced by STACK’s OSL01 data center in Oslo, Norway, is now providing heat and hot water for up to 5,000 Oslo homes. STACK Infrastructure has connected its data center to Hafslund Oslo Celsio System for the city-wide heat reuse.
In 2018, STACK’s OSL01 data center near Oslo’s center was chosen as the location for a pilot project to pump heat into the city’s district heating system. The idea was tested and validated during the next years, and a specialized heat-exchange facility was constructed on the STACK complex, where new insulated piping and cooling coils were installed to the data center.
Due to the agreement, STACK’s OSL01 data center currently exports about 3.5MW of thermal energy into the Oslo district heating system, resulting in a 25,000,000kWh reduction in Celsio’s generation of alternative energy (25GWh). District heating employs surplus heat, freeing up green power for other applications, such as the electrification of the transportation sector.
“STACK has pioneered heat reuse technology at our data centers in the Nordics and we are proud to be contributing to such an important project, which also aligns with our commitment to the Climate Neutral Data Center Pact,” said Halvor Bjerke, CEO at STACK EMEA – Nordics. “Heat reuse is now standard in our new data center designs, and we expect to continue collaborating with city authorities as well as heat and power companies to ensure that this circular economy for energy becomes widespread so that the digital economy is a sustainable one.”
The Reuse of Emission-Free Heat
In Norway, district heating is a crucial part of the urban infrastructure. Celsio’s 60-mile thermal energy distribution system would effectively transfer energy from surplus regions to places in need. Given the rising demand but limited energy supplies in these systems, the partnership provides a priceless new model. Data centers may reduce consumption and benefit local communities by retrofitting or developing buildings to repurpose waste heat.
“It is a great pleasure to see the collaboration with STACK come to fruition and I’m sure this is the first of several projects to come,” said Knut Inderhaug, Managing Director, Hafslund Oslo Celsio. “Data centers located in urban areas are stable and good sources of excess heat for district heating, and together we can contribute to the reuse of emission-free heat. Projects like this are positive for us as energy providers, for our city and its inhabitants, and for the climate.”