Enhanced geothermal systems in Europe: An estimation and comparison of the technical and sustainable potentials

In this work an estimation and comparison of the technical and sustainable potentials of EGS (Enhanced Geothermal Systems) in Europe is presented. The temperatures at depths of (3500–9500) m were firstly calculated from the available data of temperatures at surface, 1000 m and 2000 m depth, and heat flow. Next the available thermal energy stored in each 1000 m thick layer along the considered depths was evaluated. At this point, the EGS technical potential was estimated and results are presented as installable net electrical power by considering a 30 year time project. A method to estimate the EGS sustainable potential is proposed and the results are compared with the technical potential. Results are presented for the European territory as a whole and individually for each one of the European countries. Estimations for Turkey and the Caucasus region are also presented. Under the hypotheses considered in our study, the technical potential of EGS in Europe for temperatures above 150 °C and depths of between 3 km and 10 km was estimated to be more than 6500 GWe. The part of this technical potential that can be considered as ‘sustainable’ or ‘renewable’ potential was estimated to be 35 GWe.

[1]  L. Rybach,et al.  Geothermal Sustainability— A Review with Identified Research Needs , 2006 .

[2]  Subir K. Sanyal,et al.  Is EGS Commercially Feasible , 2007 .

[3]  R. Parker.  The Rosemanowes HDR project 1983–1991 , 1999 .

[4]  David V. Duchane,et al.  Scientific progress on the Fenton Hill HDR project since 1983 , 1998 .

[5]  Ruggero Bertani,et al.  Geothermal power generation in the world 2005–2010 update report , 2012 .

[6]  Arno Zang,et al.  World Stress Map Database as a Resource for Rock Mechanics and Rock Engineering , 2012, Geotechnical and Geological Engineering.

[7]  R. Dipippo.  Geothermal power plants : principles, applications, case studies and environmental impact , 2008 .

[8]  César R. Chamorro,et al.  World geothermal power production status: Energy, environmental and economic study of high enthalpy technologies , 2012 .

[9]  I. B. Fridleifsson,et al.  Status of geothermal energy amongst the world's energy sources , 2003 .

[10]  Ian W. Johnston,et al.  Emerging geothermal energy technologies , 2011 .

[11]  Albert Genter,et al.  Contribution of the exploration of deep crystalline fractured reservoir of Soultz to the knowledge of enhanced geothermal systems (EGS) , 2010 .

[12]  Suzanne Hurter,et al.  Atlas of geothermal resources in Europe , 2003 .

[13]  E. Hurtig.  Temperature and heat-flow density along European transcontinental profiles , 1995 .

[14]  Ben Norden,et al.  Lithosphere tectonics and thermo-mechanical properties: An integrated modelling approach for Enhanced Geothermal Systems exploration in Europe , 2010 .

[15]  Ernst Huenges,et al.  Current status of the EGS gross schönebeck project: On the way to demonstrate sustainable brine production from deep sediments of the North German Basin , 2006 .

[16]  C. Jaupart,et al.  The heat flow through oceanic and continental crust and the heat loss of the Earth , 1980 .

[17]  Ernst Huenges,et al.  Geothermal energy systems : exploration, development, and utilization , 2010 .

[18]  Subir K. Sanyal,et al.  FUTURE OF GEOTHERMAL ENERGY , 2010 .

[19]  The world stress map , 2007 .

[20]  Tsutomu Yamaguchi,et al.  The Hijiori Hot Dry Rock test site, Japan: Evaluation and optimization of heat extraction from a two-layered reservoir , 2008 .

[21]  Ladislaus Rybach,et al.  "The Future of Geothermal Energy" and Its Challenges , 2010 .

[22]  Graeme Beardsmore,et al.  A protocol for estimating and mapping global EGS potential , 2010 .

[23]  Subir K. Sanyal,et al.  An Analysis of Power Generation Prospects from Enhanced Geothermal Systems , 2005 .

[24]  Reinhard Jung,et al.  The GeneSys Project : Development of concepts for the extraction of heat from tight sedimentary rocks , 2004 .

[25]  Chrystel Dezayes,et al.  The Enhanced Geothermal System of Soultz-sous-Forêts: A study of the relationships between fracture zones and calcite content , 2010 .