Ecodesign of Haren Prison (Belgium)

Description of the Environmental Measure

Problem detected:

The design and construction of Haren Prison was undertaken by integrating into the project concept measures to improve energy performance and mitigate climate change, with a major component of energy efficiency and renewable energy sources.

Solutions adopted:

  • Use of solar panels for the power supply
  • Geothermal-energy storage system:
    • There are 250 drill holes for storing cold or heat or for direct extraction of energy from the ground.
    • This is one of the largest systems of this type in Belgium.
  • Energy co-generation installations:
    • First, these generate electricity.
    • The residual heat produced is also used to supply hot water for the prison.



This innovative energy concept will avoid the emission of more than 2.000 t CO2 per year.