A three way partnership of OMV Inexperienced Power and Energie Steiermark to develop a 140 MWth geothermal venture for district heating in Graz, Austria.
In a metropolis council assembly in mid-December 2024, town of Graz in Austria unanimously accepted a binding decarbonization plan for the district heating provide. This has additionally been now been arrange as binding inside the Board of Administrators of native vitality firm Energie Graz GmbH for the additional improvement of the district heating system within the larger Graz space.
An elementary a part of the decarbonization plan is the event of a geothermal warmth venture with a focused warmth era capability of 140 MWth and an anticipated eyar warmth provide of 400-500 GWh. With a present warmth demand of 1,365 GWh for the entire larger Graz space, with 1,160 GWh for town itself it’s anticipated that demand will develop to 1,400 GWh for 2030 and as much as 1,500 GWh for 2040.
Attention-grabbing are then the concrete plans with the venture “Tiefengeothermie fuer Graz”. (deep geothermal for Graz).
The venture targets the drilling of 4 doublets to a depth of three,000 to 4,000 meters, in addition to the two aquifer thermal vitality storage reservoirs at doublette 3 and 4 at a depth of 700 to 800m.
The geothermal venture is an important single venture for the decarbonisation plan of 2024 and could be essential in reaching the 80% standards for extremely environment friendly warmth.
A Pre-feasibility research was contracted in 2021 and has been an necessary first step.
For the venture, Energie Graz Gmbh is now in negotiations on the next contracts:
- Framework contract with the three way partnership of OMV Inexperienced Power GmbH & Energie Steiermark AG with Energie Steiermark Waerme GmbH
- Warmth Provide contract with the JV (OMV & Energie Steiermark)
- Energy provide contract with the JV, and
- Contract for the offtake infrastructure with Energie Steiermark Waerme GmbH
For Energie Graz it’s reported, that no important investments are anticipated, the refinancing for the three way partnership firm will happen by means of the agreed worth for the warmth supply to Energie Graz GmbH. OMV, along with Energie Wien is presently creating a geothermal venture in Vienna, Austria and can also be pushing geothermal improvement for warmth in Germany.
Worth reductions from the premise worth are arrange within the contract within the case of improved economics within the venture improvement. These are envisioned if there’s much less demand for directional drilling or no superchrome 13 casing is perhaps wanted. Subsidies over EUR 6 million per doublette would additionally scale back the agreed on worth. Worth will increase are excluded. With venture success of a warmth ship of 500 GWh, for added warmth provide as much as 625 GWh no remuneration is to be paid. For warmth delivered past that there will probably be a big low cost from the premise worth.
Goal of the primary warmth ship from first doublette is 2030 with an (indicated) warmth contract time period of 40 years.
Supply: Gemeinderat Graz/ Kleine Zeitung, Steiermark
