10 MW air-to-water heat pump for Envafors (DK)

Envafors has decided to further optimize their green and renewable district heating supply in Slagelse with a 10 MW heat pump solution from Aalborg CSP.

Customer need

Envafors is among the Danish utility companies leading the way in the green transition. At Envafors, renewable energy accounts for approximately 85% of the heat production, which is produced using straw, wood chips, solar heat, and heat pumps. The new heat pump will enable the utility company to enhance and optimize the local green district heating supply, ensuring sufficient capacity to meet the needs of current and future customers.

Plant description

The order is a turnkey project consisting of a 10 MW air-to-water heat pump with associated heat exchangers and pipes, as well as integration into the existing energy infrastructure. The heat pump system uses outdoor air as the source for heat production and is specifically tailored to fit the district heating plant’s specific energy needs and existing energy system to ensure the most cost-effective heat production price per produced MWh. The system consists of three separate heat pump units, each comprised of seven compressor modules and 12 energy absorbers. The overall heat pump system is highly flexible, which allows the operation to be adjusted to the plant's current needs.

Third collaboration in a few years

The new heat pump facility in Slagelse will be Aalborg CSP's third green energy project in collaboration with Envafors. 

Alongside the project in Slagelse, the parties are in the process of establishing a 10.2 MW heat pump system on Energivej in Halsskov. In 2019, Aalborg CSP also delivered a 8 MW solar heating system.