PEWI previously worked as petroleum/reservoir engineer for Shell Petroleum Development Company (SPDC) in Nigeria (1980-1983), and a reservoir/production engineer trainee with Mobil Producing Nigeria (1979-1980), and as an Energy Specialist or the California Energy Commission, Sacramento. He publishes, severally, on upstream oil and gas economics and policy. He ranks among the top 500 SCOPUS authors in Nigeria, 2014-2020. PEWI served on the Nigeria National Assembly Technical Advisory Team on Petroleum Industry Reforms to the Joint Committee on Petroleum Industry Bills from 2015-2021. He is member of the Board of Trustee of the SPE Nigeria Council; he has served as Africa Regional Director on the SPE International Board of Directors, 2019-2021.
Professor Iledare is a Fellow and Fmr. President of the Nigeria Association for Energy Economics (NAEE, 2015-2019); a Senior Fellow and the 2008 President of United States Association for Energy Economics (USAEE); and the 2014 President of the International Association for Energy Economics (IAEE). He has received several professional awards including NAEE Lifetime Achievement award, Outstanding Contribution to petroleum engineering in information and management discipline in SPE Africa Region; SPE Nigeria Council Best Technical paper presentation; and the IAEE outstanding contribution award to the International Association for Energy Economics. He is married to his HSGF, Abike Joyce.