Rambøll HQ

Rambøll HQ

Energy Consumption Reduction
CO2 reductions
Capital Expenditure
Savings on operating expenses
Payback period

Cooling and indoor climate are inextricably linked in modern office environments, where large glass sections lead to increased cooling needs.

The optimal solution to the indoor climate problem for Ramboll HQ became a thermally balanced ATES ground water plant from Energy Machines (Enopsol), which efficiently delivers cooling in the building during the summer and heat during winter.

 The plant naturally stores cooling and heating in the soil layer of the subsoil. The stored energy can be pumped up and used during periods of need to heat or cool the building.

 The technique consists of two well wells, pumps and a heat exchanger. The boreholes do not require much space and consist only of modest needlesticks that do not pick up more than one drinking water ring on the ground level.

The new energy plant has given Ramboll great energy and economic savings on heating, but especially on cooling, where Ramboll with a cooling power of 1,000 kW achieves an energy saving of about 85%.

International interest

The ATES solution is so ground breaking that a group of urban planners and EU officials have since visited Copenhagen to be inspired. This was in relation to Copenhagen's plans to become a carbon neutral city by 2025.


In 2010, Ramboll's domicile was 'shortlisted' as one of the world's top five office buildings by WAN (World Architecture News), partly because of the ATES solution that has shows the way forward towards sustainable energy consumption and a healthier indoor climate for employees

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Technologies used

Other Energy Machines