• Stronger together

Thank you!

We would like to thank each and every one of our member for their dedicated support and for their passion for geothermal energy.

Affiliate Members

The IGA is an ´Association of Associations´ and acts as the umbrella organization for 35 affiliates. In total, the IGA currently has around 4,500 members. The majority of our membership is funneled through our affiliated associations (about 4,200) and about 300 are direct individual members, institutional members and corporate members.

CountryOrganizationPeriod of ContractMembers
AustraliaAustralian Geothermal Energy Group2017-202163
CanadaCanadian Geothermal Energy Association2014-201831
ChileChilean Geothermal Association2013-201714
ChinaGeothermal Chinese Energy Society2018-201992
ColombiaGeothermal Association of Colombia (ACEG)2017-202132
FranceAssociation Française des Professionnels de la Géothermie2015-201998
GeorgiaGeorgian Geothermal Association2018-201914
GermanyBundesverband Geothermie2018-2019275
HungaryHungarian Geothermal Association2015-201989
HungaryHungarian Thermal Energy Society2015-201940
IcelandGeothermal Association of Iceland2015-2019199
IndonesiaIndonesian Geothermal Association2015-2019459
IranIranian Geothermal Energy Association2015-201933
IrelandGeothermal Association of Ireland2014-201836
ItalyUnione Geotermica Italiana2015-2019107
JapanGeothermal Research Society of Japan2015-201995
KenyaGeothermal Association of Kenya2018-2019159
LithuaniaLithuanian Geothermal Association2018-201925
North MacedoniaGeothermal Association of North Macedonia2015-201927
MexicoMexican Geothermal Association2018-2019134
NetherlandsDutch Stichting Platform Geothermie2018-201979
New ZealandNew Zealand Geothermal Association2015-2019370
PhilippinesNational Geothermal Association of the Philippines2016-2020259
PolandPolish Geothermal Society2015-2019123
RussiaRussian Geothermal Association2015-201912
SerbiaSerbia Geothermal Association2016-202023
SwitzerlandSwiss Geothermal Society2018-2019109
TurkeyTurkish Geothermal Association2014-2018108
United KingdomRenewable Energy Association2014-20185
USAGeothermal Resources Council2014-2018584

Corporate Members

Deep drill supply groupCastlerock consulting
EGEC (European Geothermal Energy Council)Kalahari Geo Energy Ltd.
Enel Green Power S. p. AFORTUM
Geoproduction Consultants Instrumentation & Process (GPC IP)Atlas Copco Mafi- Trench Company LLC
LandsvirkjunIceland Geothermal Cluster
OrkustofnunSt1 Deep Heat Ltd.
Orkuveita ReykjavíkurUtrex Limited
Ormat Technologies Inc.Halliburton
ThermochemPfalzwerke geofuture GmbH

Institutional Members

APPA – Spanish Renewable Energy Association
Estonian Geothermal Association
Centro de Excelencia en Geotermia de los Andes
WING – Women in Geothermal
Chief Geothermal Department – Segmar
JICA Geothermal Exploration & Development

IGA Regional Branches

IGA Africa Regional Branch

The Africa Regional Branch represents the geothermal power sector in the African Region. It works for the promotion and regional deployment of geothermal energy technology and advocates a future energy system based on the renewable energy.

The Secretariat is hosted at the UN Environment Energy Office. The head of the Secretariat is Mr. Gift Gewona.

Established in




Peter Omenda

Peter Omenda

Meseret Teklemariam Zemedkun

Meseret Teklemariam Zemedkun


IGA Asia Western Pacific Regional Branch

The Asia Western Pacific Regional Branch represents geothermal power sector in the Asian Western Pacific Region. Its intention is to provide a close regional focus for members with common interests not only geographically but also in terms of similar types of geothermal resources and technical applications. In the case of the Asia-Western Pacific Regional Branch there is a strong focus on electricity generation and higher enthalpy resources, but interest incorporates other topics also with the geographical expansion of the branch.

Established in




Surya Darma

Surya Darma