About IPGT

Representatives from Australia, Iceland and the United States signed the Charter Agreement for the International Partnership for Geothermal Technology on August 28, 2008 in Keflavik, Iceland. In 2009 Switzerland submitted an application to the Steering Committee and was invited to join the IPGT.  Switzerland signed the IPGT Charter on October 6, 2010 in Reykjavik, Iceland. In 2011, New Zealand submitted their own application to join the IPGT steering Committee and were accepted. New Zealand signed the IPGT Charter on November 16, 2011 in Melbourne, Australia. The purpose of the IPGT is to accelerate the development of geothermal technology through international cooperation.  EGS is in an early stage of development and groups throughout the world are working to develop effective methodologies and practices.

Given global climate change and the world's current energy security concerns, people everywhere need a reliable baseload source of renewable energy. Of the existing renewable energies, geothermal is the only one that can fill this role. It is thus imperative that geothermal energy be made a viable possibility for societies throughout the world, irrespective of their hydrothermal resources. The IPGT is working to achieve this goal.

The IPGT Steering Committee met on 15/16 May 2012 in Denver Colorado, alongside the 2012 US Geothermal Peer Review. At the meeting each country developed a list of their top three priorities, which they determined by consolidation the views of the IPGT working group members. Each countries top three priorities are below.


1) Enhanced Geothermal Systems Engineering - ability to engineer a range of reservoirs and achieve flow rates of 80kg/s.

2) Engineering the geothermal reservoir - predict probable permeability and fracture response prior to drilling.

3) Social, market and regulatory barriers - for the market.


1) Reservoir modeling linked with understanding physical processes in geothermal systems

2) Induced Seismiscity.

3) Development of exploration technologies

*Honourable mention to devloping lower cost drilling technologies.

New Zealand

1) Exploration Technologies - how do we find new systems cost effectively? Identifying permeability and targeting it.

2) Lower cost drilling.

3) Reservoir Modeling - need more done on the experimental side to contain numerical models in our system

*Honourable mention to the development of High temperature tools.


1) Managing induced seismicity - license to operate angle.

2) Lower cost drilling - driven by opportunity in Switzerland, thermo spatial drilling.

3) Zonal isolation and stimulation procedures

*All EGS related.

The United States

1) Cost reduction and risk reduction for undiscovered geothermal systems - identifying new geothermal prospects.

2) Regulatory roadmap - streamlining, permitting processes across the states, licensing approval, drilling, environmental and programmatic. Development of a reference document whitepaper for site specific approval.

3) EGS - near horizontal wells with multiple stimulation points, EGS test sites, reservoir creation and sustainabilty

Link to IPGT Charter (.pdf, 282kb)

Link to Freqently Asked Questions


Member Countries:


The United States
of America







New Zealand

Link to Country Membership Requirements

Steering Committee:

The United States of America

  • Jay Nathwani, Geothermal Technology Manager, Geothermal Technologies Program,
    U.S. Department of Energy

  • Karl Gawell, Executive Director, Geothermal Energy Association 


  • Gary James, Manager, Renewable Technology and Climate Policy, Department of Industry

  • Anthony Budd, Project Leader, Geothermal Energy, Geoscience Australia

  • Peter Reid , Exploration Manager, Petratherm, CSIRO


  • Gudni A. Jóhannesson , Director General, Orkustofnun National Energy Authority

  • Ólafur G. Flóvenz, Director General, ÍSOR Iceland GeoSurvey


  • Gunter Siddiqi (chair), Head of Geothermal Research, CSS and Power Generation Research Program, Swiss Federal Office of Energy

  • Markus O. Häring, CEO, Geothermal Explorers Int. Ltd

New Zealand

  • Vanessa Bennett, Manufacturing and Resources, Science Investments Ministry of Science and Innovation

  • Greg Bignall, Senior Scientist, Department of Geothermal Sciences, GNS Science