• Engineering, prefabrication, installation and commissioning of 70-meter district heating accumulator in Malmö, Sweden
• Pressureless accumulator enables efficient storage of 2,400 MWh
• Strengthens Bilfinger's leading position in the growing European thermal energy storage market
• Prefabrication at Bilfinger's workshop in Poland ensures high quality and efficient delivery

Malmö, Sweden. International industrial services provider Bilfinger has been awarded a contract by E.ON to deliver a large-scale district heating accumulator for the city of Malmö. With a height of approximately 70 meters and a storage capacity of around 2,400 MWh, the facility represents the largest single investment in district heating in the city in many years. The accumulator will strengthen Malmö's energy system, reduce CO2 emissions from district heating production by up to 50 percent and make the city's energy supply more flexible.

Bilfinger will provide the full scope of delivery for the accumulator, including engineering, prefabrication, installation and commissioning. Prefabrication will take place at Bilfinger's workshop in Gródek, Poland, ensuring high-quality manufacturing and efficient execution.

The pressureless accumulator uses the Hedbäck technology – a proven solution that maximizes storage efficiency. The facility can hold 45,000 cubic meters of heated water – enough to keep around 30,000 households warm during a cold winter day.

“We are proud to deliver this landmark energy storage contract for E.ON in Malmö. Our proven Hedbäck technology, combined with Bilfinger's engineering strength and in-house prefabrication capabilities, allows us to deliver efficient, reliable solutions for the growing European district heating market,” says Thierry Burki, Segment President Central Europe at Bilfinger.

Engineering is scheduled to begin at the end of May 2026, with commissioning expected in winter 2028/2029. The contract is part of E.ON's development of Malmö's Northern Harbour as a new energy cluster, supporting the city's role as a leader in the energy transition.

Bilfinger has extensive experience in district heating storage orders across Europe, including the delivery of a 1,800 MWh two-zone accumulator for Stadtwerke Leipzig in Germany and Estonia's largest heat storage facility with a capacity of 1,100 MWh for Utilitas in Tallinn.