External Sites
- Direktorat Jenderal Mineral, Batubara dan Panas Bumi http://psdg.geologi.esdm.go.id/
- Ministry of Energy and Mineral Resources Republic of Indonesia http://www.esdm.go.id/
- Indonesian Geothermal Association http://www.inaga-api.or.id/
- News and Research on Geothermal Energy http://www.thinkgeoenergy.com/
- Geo Dipa Energi https://www.geodipa.co.id
- Pertamina Geothermal Energy http://pge.pertamina.com/
- PLN Gas & Geothermal http://www.plngg.com/id/
- Supreme Energy http://www.supreme-energy.com
- Star Energy https://www.starenergy.co.id
- Sarulla Operations Ltd http://sarullaoperations.com/
- KS ORKA https://ksorka.com/
- ORMAT Technologies Inc https://www.ormat.com/en/home/a/main/