Case studies
District heating
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Billund · Denmark
16 MW · 6 x H-2600 Air-to-water
Large-scale electrification - flexible, low-cost district heating -

Nykøbing Sjælland · Denmark
10 MW · 4 x H-1800 Air-to-water
District heating with flexible heat production and large energy storage -

Langenhorn · Germany
900 kW · H-600 air-to-water heat pump + HCI-300 sub-cooler
Wärmebox - a fossil-free district heating plant on less than 400 m2 -

Vojens · Denmark
3.6 MW · HCI-4000
Year-round utilisation of pit thermal energy storage -

Haderslev · Denmark
12 MW · 5 x H-2600 Air-to-water
Denmark’s largest CO₂ air-source heat pump to date -

Copenhagen · Denmark
4.9 MW · 2 x H-1800 Water-to-water (heating)
3.3 MW · 1 x H-1200 Water-to-water (cooling)
Waste heat from district cooling recovered for district heating -

Ry · Denmark
10 MW · 4 x H-2600 Air-to-water
A flexible solution for a growing community -

Vildbjerg · Denmark
7 MW · 3 x H-1800 Air-to-water
Exploiting the fluctuating electricity market with large-scale heat pumps -

Fårevejle · Denmark
3.5 MW · 2 x H-1800 Air-to-water
1.3 MW · 1 x H-1200 Water-to-water
Combined wastewater and air-source heat pump for district heating -

Hanstholm · Denmark
5.2 MW · 2 x H-2600 Air-to-water
FENhouse: Heat pump and machine room in one
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Sdr. Felding · Denmark
3.5 MW · Air-to-water · 2 x H-1800
District heating company expands existing biomass-based production -

Gram · Denmark
3 MW · 2 x H-1800 Air-to-water & water-to-water
Gas-free district heating year-round - optimisation of pit thermal energy storage -

Mærskgaarden · Denmark
0.3 MW · 1 x H-300 Close coupled · Air-to-water
Plug-and-play heat pump for communal heating -

Mejlby · Denmark
1.3 MW · Air-to-water · 1 x H-1200
Installation of a heat pump in the middle of a residential area -

Vestervig · Denmark
1.2 MW · 1 x H-1200 Air-to-water
Heat pump combined with a wood chip boiler and storage tank -

From Harlev to Trustrup · Denmark
0.6 MW · 1 x H-600 Air-to-water
Transportable air-source heat pump -

Haderup · Denmark
1.2 MW · 1 x H-1200 Air-to-water
Combined heat and power plant -

Havneby · Denmark
0.6 MW · 1 x H-600 Air-to-water
Air-to-water heat pump in enclosure