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Measuring Madrid underground’s geothermal energy

Sensus together with Termoterra and IFTec GeoEnergía are measuring the geothermal energy in Madrid’s underground system.

The aim is to use the metro environment as a means of cooling and heating the platforms, offices and commercial space of the Pacífico Metro station by installing a geothermal heat pump.

Madrid looked for a solution that would harness geothermal energy to provide a heat source in the winter and a cooling air conditioning source in the summer – a heat sink. This concept has been used in the Pacífico underground station through a partnership between Termoterra and IFTec GoeEnergía using a geothermal heat pump (GSHP).

The heat pump is connected to the ground using a high density polyethylene pipe system in the shape of ‘U’. The 32 pipes are driven down 145 ms and filled with fresh water.


Sensus has installed energy meters that monitor the three geothermal heat exchangers (GHE). The Sensus system also checks the secondary heat pumps that provide cooling power when environmental conditions so demand.

Sensus has installed 8 heating and cooling ultrasonic energy meters - PolluStat EX - and one ultrasonic flow sensor - PolluTherm. All are read remotely.

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