Our Solution

Ultra Deep Geothermal Energy

Ultra Deep Geothermal Energy (UDG)

Planet Earth itself is one giant power plant with a core temperature of approximately 6,000°C. Our logical solution simply consists in finding a responsible method for tapping just a little bit into this vast source of energy (see illustration).

How do we do it?

Availing ourselves of the latest state-of-the-art technology, we drill down to a maximum depth of 10km, into stable hot-rock formations in the Earth’s crust, where temperatures can reach approximately 350°C. Along the entire length of the drilling hole, a casing pipe is placed that is cemented to the outside of the drilling hole, sealing it completely. A second, double-walled return-pipe is then introduced into the casing pipe all the way down, thus creating a closed system that allows for a special thermal fluid to circulate down to the Earth’s hot layers. 

The heated thermal fluid returns to the surface, transferring approximately 310°C through heat exchangers.
By means of a second closed system, this heat enables powerful steam generators to produce CO2–neutral (green) electricity. Once cooled off, the thermal fluid recirculates to the Earth’s deep layers for a new cycle. In this way, the Earth’s heat is exchanged continuously, resulting in a 24/7/365 production of safe, reliable and sustainable green energy, which we have named UDG or Ultra-Deep Geothermal Energy.

In summary

  • We operate a fully closed and fully controlled system;
  • There is no extraction from underground thermal aquifers;
  • We are the first to drill multiple geothermal production tubes from a single drilling shaft (see illustration);
  • We go all the way down to 10,000m, so as to access the desired temperature of 350°C;
  • Our output capacity is much larger than is currently customary. With a maximum of 30 production tubes per drilling shaft, a single UDG power plant can generate up to 600MW of electricity p/h (enough for approximately 1,1 million households, with an average annual electricity consumption of 5,000 kWh).