Richard Opoku, Eunice A. Adjei, Divine K. Ahadzie, Kofi A. Agyarko (Jan, 2020). Energy efficiency, solar energy and cost saving opportunities in public tertiary institutions in developing countries: The case of KNUST, Ghana. Alexandria Engineering Journal, Vol 59 (2020), 417–428.  https://doi.org/10.1016/j.aej.2020.01.011.

Kofi A. Agyarko, Richard Opoku, Robert Van Buskirk (Jan, 2020). Removing barriers and promoting demand-side energy efficiency in households in Sub-Saharan Africa: A case study in Ghana. Journal of Energy Policy (Elsevier), Vol 137 (2020) 111149.  https://doi.org/10.1016/j.enpol.2019.111149

Richard Opoku, Isaac Adjei Edwin, Kofi A. Agyarko (May, 2019). Energy efficiency and cost saving opportunities in public and commercial buildings in developing countries - The case of air-conditioners in Ghana. Journal of Cleaner Production (Elsevier), Vol 230 (2019); 937-944.   https://doi.org/10.1016/j.jclepro.2019.05.067

Richard Opoku; George Y. Obeng; Eunice A. Adjei; Francis Davis, Fred O. Akuffo (Mar, 2020). Integrated system efficiency in reducing redundancy and promoting residential renewable energy in countries without net-metering: A case study of a SHS in Ghana. Renewable Energy Journal (Elsevier), Vol 155 (2020) 65-78.

 https://doi.org/10.1016/j.renene.2020.03.099

Richard Opoku; Eunice A. Adjei; George Y. Obeng, Luc Severi, Abdul-Rahim Bawa (Mar, 2020). Electricity access, community healthcare service delivery and rural development nexus: Analysis of 3 solar electrified CHPS in off-grid communities in Ghana. Journal of Energy (Hindawi), Vol 2020 (Article ID 9702505) 1-10. https://doi.org/10.1155/2020/9702505

Emmanuel. Y Osei, Richard Opoku, Albert K. Sunnu, Muyiwa S. Adaramola (Feb, 2020). Development of High Performance Airfoils for Application in Small Wind Turbine Power Generation. Journal of Energy, (Hindawi). Vol 2020 (Article ID 9710189) 1-9.

 https://doi.org/10.1155/2020/9710189

Richard Opoku; George Y. Obeng, Jo Darkwa, Samuel Kwofie (Mar, 2020). Minimizing heat transmission loads and improving energy efficiency of building envelopes in sub-Saharan Africa using bio-based composite materials. Scientific African Journal (Elsevier), Vol 8 (2020) e00358.

 https://doi.org/10.1016/j.sciaf.2020.e00358

7. Colenbrander, J. Lovett, M. Suzan Abbo, C. Msigwa, R. Opoku (Jan, 2015). Renewable energy doctoral programmes in sub-Saharan Africa: A preliminary assessment of common capacity deficits and emerging capacity-building strategies. Energy Research & Social Science (Elsevier), Vol 5 (2015) 70–77.

 http://dx.doi.org/10.1016/j.erss.2014.12.010.

Richard Opoku, Kwadwo Mensah-Darkwa, Samed Muntaka (Mar, 2018). Techno-economic analysis of a hybrid solar PV-grid powered air-conditioner for daytime office use in hot humid climates – A case study in Kumasi city, Ghana. Journal of Solar Energy (Elsevier), Vol 165 (2018); 65-74.

 https://doi.org/10.1016/j.solener.2018.03.013.

Richard Opoku, S. Anane, I.A. Edwin, M.S. Adaramola, R. Seidu (Aug, 2016). Comparative techno-economic assessment of a converted DC refrigerator and a conventional AC refrigerator both powered by solar PV. International Journal of Refrigeration (Elsevier), Vol 72 (2016) 1–11.

 http://dx.doi.org/10.1016/j.ijrefrig.2016.08.014.