Your energy consumption for heating will be lowered up to 75% with the use of NIBE ground source heat pumps.
NIBE produces 15 different types of ground source heat pumps, ranging from 5 kW to 40 kW. By using a cascade connection it is possible to achieve an output of 360 kW.
The energy consumption for heating and hot water can be lowered by up to 75% with a ground source heat pump from NIBE in comparison to heating systems using fossil fuels.

Technical information
Installation manual - Ground collector,
Ground source heat pump