Our Management Team

Bret Mattes
Chief Executive Officer and Managing Director
Rudy Suparman
Chief Operating Officer
Hendra Tan
Chief Finance Officer
John Sinaga
Vice President Accounting and Finance
Asrin Hasnam
Vice President Petroleum Operation
Alex Smillie
Vice President Geothermal Operation
Sugembong C.F.
Vice President Human Resources and Corporate Services
M.H.Thamrin
Vice President Operation Support
Sanusi Satar
Vice President External Relations and Security