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Episode: ECOGI geothermal project at Rittershoffen - development phase

Description

The ECOGI powerplant is a geothermal powerplant designed by ÉS-Géothermie and located at Rittershoffen in northern Alsace, 7 km southeast of Soultz-sous-Forêts.
The geothermal plant of Rittershoffen is operating since mid-2016 and produces 24 MWth of thermal power, with a production temperature of 170 °C.
The geothermal heat production is directly used by a biorefinery located at Benheim.
Two wells ensure the production and reinjection of the geothermal fluid.

The development of the deep geothermal field took place between 2012 and 2014.
Several earthquakes occurred between 2012 and 2014 during the drilling of the two wells GRT-1 and GRT-2 and some of the hydraulic tests realized on site.
The induced seismicity was recorded by a permanent and a temporary seismic network.

The following resources are included in this collection

Collection or ressource image

Geological sections from GeORG-Rittershoffen

Dataset

The GeORG project (2008–2012) built a 3D geological model of the Upper Rhine Graben, offering maps and cross‑sections accessible online. A subset around the Rittershoffen site was extracted for use.
Collection or ressource image

Catalog of seismicity induced at Rittershoffen-ECOGI geothermal site during its development phase, according to Gaucher et al. (2025)- ECOGI geothermal project development phase

Dataset

This catalogue reports over 3,000 induced seismic events recorded during the 2013 GRT‑1 stimulations at the Rittershoffen‑ECOGI site, as analysed by Gaucher et al. (2025).
Collection or ressource image

GeORG 3D Geological Model — Rittershoffen

Dataset

The GeORG project produced a 3D geological model of the Upper Rhine Graben. The BRGM distributes the French section, and a 10 km cut‑out around the Rittershoffen site was extracted, including major lithological interfaces and faults.
Collection or ressource image

Microseismic catalogue with magnitude from ÉS-Géothermie - ECOGI geothermal project development phase

Dataset

Microseismic catalogue from the Rittershoffen surface network (2012–2014), containing 1348 events recorded during drilling and hydraulic tests at GRT‑1.
Collection or ressource image

Microseismic surface network during Rittershoffen Development

Dataset

Microseismic monitoring at Rittershoffen began six months before drilling, using four permanent stations added to the Soultz network.
Collection or ressource image

Velocity model used to locate seismic events from the surface network - ECOGI geothermal project

Dataset

Interval seismic velocities applied to the 3D velocity model. Vp, Vs and Vp/Vs values for each formation along GRT-1 well.
Collection or ressource image

Seismological waveforms - ECOGI geothermal project development phase

Dataset

Seismological signals from the Rittershoffen development phase include waveforms from the permanent network for all RITD‑Catalogue events, and the 2013–2014 temporary network waveforms available via GFZ Data Services.
Collection or ressource image

RIT-GRT1 well

Dataset

GRT‑1 is the first well drilled for the ECOGI geothermal project at Rittershoffen.
Collection or ressource image

RIT-GRT2 well

Dataset

GRT‑2 is the second well of the ECOGI geothermal project at Rittershoffen.
Collection or ressource image

Focal mechanisms of seismic events - ECOGI geothermal project

Dataset

This dataset provides focal mechanisms for a small set of representative earthquakes that occurred during the 2013 stimulations.

Stakeholders

Creator(s)

École & Observatoire des Sciences de la Terre
Parent affiliation : Institut National des Sciences de l'Univers
Parent affiliation : Université de Strasbourg
Institut Terre & Environnement de Strasbourg
Parent affiliation : École & Observatoire des Sciences de la Terre
Parent affiliation : Institut National des Sciences de l'Univers
Parent affiliation : Centre National de la Recherche Scientifique
Parent affiliation : Université de Strasbourg
Parent affiliation : Ecole Nationale du Génie de l'Eau et de l'Environnement de Strasbourg (ENGEES)
Karlsruhe Institute of Technology
Parent affiliation : Helmholtz Association of German Research Centres

Rights Holder(s)

École & Observatoire des Sciences de la Terre
Parent affiliation : Institut National des Sciences de l'Univers
Parent affiliation : Université de Strasbourg

Distributor(s)

École & Observatoire des Sciences de la Terre
Parent affiliation : Institut National des Sciences de l'Univers
Parent affiliation : Université de Strasbourg

Hosting Institution(s)

École & Observatoire des Sciences de la Terre
Parent affiliation : Institut National des Sciences de l'Univers
Parent affiliation : Université de Strasbourg

Publisher

École & Observatoire des Sciences de la Terre
Parent affiliation : Institut National des Sciences de l'Univers
Parent affiliation : Université de Strasbourg

Temporal coverage

Nov. 29, 2012 to May 26, 2014

DOI

https://doi.org/10.25577/RITD2012

Subjects

Production test

Hydraulic Stimulation

Circulation Test

Chemical stimulation

Thermal stimulation

How to cite

EOST & ECOGI. (2020). Episode: ECOGI geothermal project at Rittershoffen - development phase [Collection]. EOST-CDGP.

License

Except where otherwise noted, content for this ressource is licensed under a Creative Commons Attribution 4.0 International license.

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Ressource last modified on June 24, 2026