지열 연구

주요 선수 : AP Møller Holding A/S , Geothermal Operations Company , Gate 21 , Danfoss A/S

주요 선수 : Aboitiz Power Corporation, Turboden SpA, MITSUBISHI HEAVY INDUSTRIES, LTD, Calpine Corporation, Toshiba Corporation

주요 선수 : Enel SpA, Toshiba Energy Systems & Solutions Corporation, BCPG Public Company Limited, PT Supreme Energy, Sarulla Operations Ltd.

주요 선수 : 에너지 개발 공사, Pertamina Geothermal Energy PT, Toshiba Corp., Mercury NZ Ltd., PT Supreme Energy

주요 선수 : Geothermal Engineering Ltd., GT Energy, Eden Geothermal Ltd, Go Geothermal Ltd, Engie SA

주요 선수 : Mitsubishi Power, Ltd., Ormat Technologies, Inc., Engie SA, Tetra Tech, Inc., First Gen Corporation

주요 선수 : Tetra Tech Inc., Mitsubishi Hitachi Power Systems, Turboden SpA, Mannvit HF, Terra-Gen Power LLC

주요 선수 : Mannvit, Climeon AB, PannErgy PLC, KS Orka Renewables Pte Ltd, Porcio Co. Ltd.

주요 선수 : Philippine Geothermal Production Company, Inc., Energy Development Corporation, National Power Corporation, Aboitiz Power Corporation, Aragorn Power and Energy Corporation(APC Group Inc.)

주요 선수 : WSP Global Inc., Climeon AB, MalmbergGruppen AB, Mincon Group Plc, E.ON SE