Dr. Stephen Onacha – Chair, Strategy and Membership Committee

Dr. Stephen Alumasa Onacha is the Director in charge of Resource Development at Akiira Geothermal Limited. He is an International Geothermal Exploration, Development, and Management expert. He received his Ph.D. from Duke University in North Carolina on a United Nations Environment Programme (UNEP) funded project on locating high production wells in geothermal systems in Kenya, the USA and Iceland using microearthquake and resistivity data. He also has an MSc degree from the University of Nairobi in Kenya and Edinburgh University in Scotland. He is a graduate of the United Nations University in Reykjavik, Iceland. 

Dr. Onacha is a geothermal exploration, development and management professional with over 20 years of international experience in the public and private sectors. Dr. Onacha has worked in several countries on geothermal exploration projects including the USA, Iceland, St Kitts and Nevis, New Zealand, Rwanda, Comoros and Kenya. Prior to embarking on Ph.D. studies at Duke University, Onacha worked as the Chief Geophysicist and later as the leader in Geothermal Resources Development for Kenya Electricity Generating Company (KenGen) geothermal project in Kenya. 

His responsibilities included implementing all strategic plans, programs, and scientific activities including the design and implementation of geophysical techniques for exploration, development, and monitoring of geothermal fields. He also had the responsibility of identifying and locating geothermal exploration, production, and injection, and make-up wells. Before joining IESE, Onacha was in charge of all the geothermal resources assessment and development activities in KenGen that culminated in locating high production exploration wells in a new geothermal field using the joint geophysical imaging technique (JGI). The JGI project was sponsored by the United Nations Environmental Programme (UNEP) and the Global Environmental Facility (GEF). He has been the principal investigator on several geothermal exploration projects in Iceland, Kenya, Comoros and USA.

He is also a member of the Audit Committee and Education, Publication & Programs Committee at GAK.