Bret Mattes was until recently the Chief Executive Officer of The Star Energy Group of Companies, which is an oil and gas producer and natural gas infrastructure owner, and operates the Wayang Windu geothermal electricity generation facility in West Java. He is an Advisor on Indonesia to the University of Western Australia in Perth. He is a director of The International Skills and Training Institute in Health, and of the National Centre for Asbestos Related Diseases in Australia. He lives in Jakarta.