Calzada Residence in Gernika (Bizkaia)

Geothermal system that supplies renewable thermal energy to a heat pump, supported by the existing boiler to cover peak heating demand.

Characteristics

• Category

  Renovation

• Promoter

  Fundación Residencia Calzada

• Heated surface

  8.500 m²

• Thermal production

  Ground source heat pump
  Existing boiler as backup

• GIS Power

  Heating: 219 kW (53% of peak load)
  Cooling: 249 kW (77% of peak load)

• GIS Covered Demand

  Heating: 611 MWh/year (71%)
  Cooling: 199 MWh/year (100%)

• Geothermal exchange circuit

  Closed-loop system: 28 borehole x 110 m (3,080 m total)
  Open-loop system: 4 wells

• Distribution

  4 pipes

• Issuers

  Underfloor heating and radiators

• Expected energy savings

  563 MWh PE/year (-42%)

• Commissioning

  January 2025