Ewah is the Executive Director of ICEED. He has worked on energy and environment reform issues in several African countries. Ewah has specialised in economic and policy issues associated with expansion of energy access. He has over the past 25 years been consulting for the World Bank, European Union, USAID, DFID, the Governments of Canada, Norway, United States and the Federal Government of Nigeria. He was the Lead Author of Nigeria's Renewable Energy Master Plan – the Federal Government’s 20-year Renewable Energy Investment Framework. Ewah has played central roles in Nigeria's energy access reform processes, including leading DFID's Nigeria Infrastructure Advisory Facility's (NIAF) technical assistance to the Federal Government of Nigeria on electricity access expansion, rural electrification reforms and renewable energy market development. He holds an Mphil in Political Science.