Friday 23/09/2016

The EGC2016 fieldtrip is an excellent opportunity to tour some of the latest deep geothermal developments in the region and view the local geological conditions.

The new Rittershoffen geothermal plant, located in Northern Alsace is currently producing high temperature geothermal fluids (>165°C) for a factory. A geothermal doublet has been recently drilled at the interface between the clastic sedimentary cover and the top crystalline fractured basement to provide 24MWth. The shareholders of the project are ES, Roquette Frères, and Caisse des dépôts et consignation. The geothermal exploitation was done by ES Géothermie.

The well-known Soultz-sous-Forêts geothermal site belongs to a French-German consortium with ES, EnBW and Bestec. Fully renovated between 2015- 2016, it is now producing, a gross power of 1.7MWe from 5-km deep wells in deep fractured granite. New geothermal surface installations have been erected recently by Turboden. The EGC visitors will see both of these sites in operational conditions.

The Windstein site includes well exposed rocks located on the Western shoulder of the Rhine Graben. Some relevant rock facies made of Buntsandstein sandstone and Carboniferous granite are outcropping. They represent relevant analogues of deep-seated geothermal reservoirs we could find at depth in the Upper Rhine Graben as in Rittershoffen and Soultz-sous-Forêts. EGC visitors can see the sandstone and granite outcrops

Programme

09:00 Departure from Exhibition Centre
10:00 First visit Group 1 : ECOGI, Rittershoffen
  Group 2 : Windstein Outcrops
10:45 Second visit Group 1 : Windstein Outcrops
  Group 2 : ECOGI, Rittershoffen
12:30-14:15 Lunch
14:30 Afternoon visit Soultz plant
17:00 Arrival Strasbourg

Lunch is included in the price. Please wear comfortable walking shoes.