Pilgrims’ hostel in Zabalbide (Bilbao)

Vertical closed-loop geothermal exchange system that provides renewable thermal energy to two water-to-water heat pumps. One of the pumps is responsible for space conditioning, and the other is dedicated to the production of sanitary hot water (SHW).

Characteristics

• Category

  New construction

• Promoter

  Bilbao City Council

• Geological material

  Marls and marly limestones

• Thermal production

  Ground source heat pumps

• GIS Power

  Heating: 50 kW (100% peak load)
  Cooling: 46 kW (100% peak load)

• GIS Covered Demand

  Heating: 36 MWh/year (100%)
  SHW: 31 MWh/year (100%)
  Cooling: 21 MWh/year (100%)

• Geothermal exchange circuit

  600 m: 4 borehole x 150 m

• Distribution

  2 pipes

• Issuers

  Fan coil and air conditioning units

• Expected energy savings

  68 MWh PE/year (-65%)

• Commissioning

  April 2025