Dr. Stephen Alumasa Onacha

Dr. Stephen Alumasa Onacha

Dr. Stephen Alumasa Onacha is Director in charge of Resource Development at the Akiira Geothermal Limited. He is an International Geothermal Exploration, Development and Management expert. He received his PhD 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, USA and Iceland using micro earthquake 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. 

Onacha is a geothermal exploration, development and management professional with over 20 years international experience in public and private sectors. Onacha has worked in several countries on geothermal exploration projects including USA, Iceland, St Kitts and Nevis, New Zealand, Rwanda, Comoros and Kenya. Prior to embarking on PhD 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 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.