PTG's Costumer Base
- Ormat Technology Inc.
- Leidos Biomedical Research, Inc
- Makarim & Taira Law Office
- INA-RESPOND
- Star Energy Geothermal
- Geothermal Resource Group
- The Kirby Institute
- Sarulla Operation Ltd
- US Department of State
- Chevron Corp
- Amerada Hess
- US Department of State
- Bank Danamon
- Bow Valley Ltd.
- Ernst & Young Pacific, L.L.C
- General Motors Indonesia Inc.
- Pertamina Tesada Hallwood
- PT. Bhineka Handal
- PT. Dayamitra Malindo
- PT. Purna Bina Indonesia
- PT. South Pacific Viscose
- The Chinook Group Inc.
- Bank BRI - IVP
- Cable & Wireless HKT
- Golden Lion (PT. Singa Mas Perkasa)
- Pertamina Talisman (OK) Ltd
- PT. Trans-Tec World Fuel Services Indonesia
- Jakarta International School
- PT. SGS Service Indonesia
- PT. SUCOFINDO
- PT. Gelombang Fajar
- PT. Bechtel Indonesia
- U.S. NAVY - NAMRU2 JAKARTA
- AMCHAM Indonesia
- PT. AEON Credit Service Indonesia
- USAID
- Black Gold Indonesia, LLC
- Niko Resources Ltd
PTG 2013
