1. Department of Mineral, Petroleum, Energy Economics and Law, University of Ibadan, Ibadan, Nigeria
Olugbenga A. Falode
1. Department of Mineral, Petroleum, Energy Economics and Law, University of Ibadan, Ibadan, Nigeria
Chukwuemeka J. Diji
2. Department of Mechanical Engineering, Kampala International University, Uganda
Omolayo M. Ikumapayi
3. Department of Mechanical and Mechatronics Engineering, Afe Babalola University, Ado-Ekiti, Nigeria 4. Department of Mechanical and Industrial Engineering Technology, University of Johannesburg, Doornfontein Campus, South Africa
Adetokunbo A. Awonusi
5. Department of Mechanical Engineering, University of Ibadan, Ibadan, Nigeria
Sunday A. Afolalu
3. Department of Mechanical and Mechatronics Engineering, Afe Babalola University, Ado-Ekiti, Nigeria6. Department of Mechanical Engineering Science, University of Johannesburg, Auckland Park Campus, South Africa
Esther T. Akinlabi
6. Department of Mechanical Engineering Science, University of Johannesburg, Auckland Park Campus, South Africa 7. Directorate, Pan African University for Life and Earth Sciences, Ibadan 200284, Nigeria
Population expansion and increased industrialization are driving up global energy demand. Similarly, the most populous African country, Nigeria generates and transmits electricity far less than is required to meet her basic residential and industrial demands. Alternative means such as fossil fuel-powered generators to complement these demands are still not sufficient to meet these demands with notice to their limitation such as high lifecycle cost and carbon dioxide emission. Renewable energy resources are suitable substitutes for existing electricity sources to fulfil growing demand. Extensively in this paper, a review on the research progress of Hybrid Renewable Energy Systems (HRESs) and Integrated Renewable Energy Systems (IRESs) in the different continents of the world was presented considering methodologies, approaches, and parameters such as technical, economic, and emission limitation in determining the optimal renewable energy system in their present locality. According to the study's findings, about 63% and 22% of the research were conducted in Asia and Africa respectively, from which the research is mostly conducted in rural and remote areas of these continents.
