Renewable energy
Geothermal: the complete guide for sustainable heating in 2025
Harness the Earth's energy to heat your home. Discover geothermal, its advantages, costs and available subsidies in Belgium.
· 12 min read · VCN Energy
Geothermal: harnessing the Earth's energy
Geothermal energy involves extracting the heat naturally present in the ground to heat (or cool) a building. Combined with a heat pump, this technology offers one of the most efficient and sustainable heating systems available.
How does geothermal work?
The principle is based on a constant: at a few meters depth, the soil temperature remains stable throughout the year, between 10 and 15°C in Belgium. This free and renewable heat is captured by a heat transfer fluid circulating in buried tubes.
Types of geothermal collectors
Horizontal collectors
Tubes are buried at shallow depth (60 to 120 cm) over a large area.
Vertical collectors (geothermal probes)
Boreholes of 50 to 150 meters deep allow probes to be installed.
Advantages of geothermal
- 70 to 80% savings on heating bills
- Energy independence
- Heating AND cooling possible
- Exceptional durability (50+ years for collectors)
Subsidies in Belgium
Significant subsidies are available in all Belgian regions for geothermal installations.
Conclusion
Geothermal represents the most sustainable and profitable investment for your heating.
Contact VCN Energy at 0470 27 16 08 for a free feasibility study.