• Advanced Transmission Technologies ATT 4801.

• Transmission and Distribution Planning.
• Capacity Uprate of Transmission and Distribution Lines.
• Power Electronics in Planning (FACTS, DFACTS, and HVDC).
• Integration of Renewable Energy Sources.
• Energy Efficiency.
• Applications of Statistics, Optimisation, and Multi-Criteria Decision Analysis.

• Power System Planning.

1. Mbuli, Dynamic Voltage Restorer Dynamic as a Solution to Voltage Problems in Power Systems: Focus on Sags, Swells and Steady Fluctuations, Energies, 16 (19), 6946, pp. 1-26 (SCIE).
2. Mbuli, M. Diya, A Survey of Applications of the Kruskal Wallis Test in Wind Power Generation, Przegląd Elektrotechniczny, R. 99 NR 4/2023, pp. 140-144 (ESCI).
3. Mbuli, B. Mendu, JHC Pretorius, Statistical Analysis of Duration of Forced Outages for Subtransmission Circuit Breakers, Energy Reports Vol. 8, No. 13, Nov. 2022, pp. 1424-1433 (SCIE).
4. S. P. Eboule, J. H. C. Pretorius, N. Mbuli, Machine Learning Techniques Applied on a Nine-Phase Transmission Line for Faults Classification and Location, Energy Reports, Elsevier, April 2022, Vol. 8, pp. 801-810 (SCIE).
5. Mbuli, S. W. Ngaha, A Survey of Big Bang Big Crunch Optimisation in Power Systems, Renewable and Sustainable Energy Reviews, Elsevier, Expected Acceptance, December 2021, (SCIE).
6. Mbuli, B. Mendu, Survey of Applications of Simple and Multiple Linear Regression in Wind Power Generation, Przeglad Elektrotechniczny, Poland, Expected Publication, December 2022 (ESCI).
7. Mbuli, B. Mendu, M. Seitshiro, J. H. C. Pretorius, What outage attributes affect the frequencies of forced transformer outages in Eskom regions? Evidence from 2007-2016 data, Energy Reports, Vol. 6, December 2020, pp. 474-482, (SCIE).
8. Mbuli, M. Mathonsi, M. Seitshiro, J. H. C. Pretorius, Decomposition Forecasting Methods: A Review of Applications in Power Systems, Energy Reports, Vol. 6, December 2020, pp. 298-306, (SCIE).
9. Mbuli, B. Mendu, M. Seitshiro, J. H. C. Pretorius, Statistical Analysis of Forced Outage Durations of Eskom Subtransmission Transformers, Energy Reports, Vol. 6, December 2020, pp. 321-329, (SCIE).
10. Eboule, J. H. C. Pretorius, N. Mbuli, Nine-Phase Transmission Line Design: Implementation using Matlab/Simulink, Przeglad Elektrotechniczny, Poland, R. 96 NR 08/2020, pp. 1-9, August 2020, (ESCI).
11. Mbuli, R. Xezile, and J. H. C. Pretorius, Stochastic Assessment of the Impact of Distributed Synchronous Generators on Voltage Sags due to System-Wide Faults, SAIEE Africa Research Journal, South Africa; Vol. 111, No. 2, pp. 65-72, June 2020, (ESCI).
12. Mbuli, S. Sikhakhane, M. Seitshiro, J. H. C. Pretorius, Frequency of Forced Outages for Sub-Transmission Circuit Breakers: Statistical Analysis of Data for the Period 2005-15, Przeglad Elektrotechniczny, Poland, R. 96 N R 3/2020, pp. 98-106, March 2020, (ESCI).
13. Mbuli, A. Dyantyi, J. H. C. Pretorius; Potential for Grid Efficiency based on a Combination of Leakage Reactances of Transformers of a Transmission Interconnecting Line: Application of Exhaustive Search Algorithm; Journal of Energy in Southern Africa; Print ISSN: 1021- 447X, Energy Research Center, South Africa, vol. 30, no. 4, p.1-12, Dec 2019, (SCIE).
14. Mbuli, R. Xezile, L. Motsoeneng, M. Ntuli, and J. H. C. Pretorius; A Literature Review on Capacity Uprate of Transmission Lines: 2008 to 2018; Electric Power Systems Research; Vol. 170, Jan 2019, pp. 215-221, (SCIE).

• Professional Engineer (Pr Eng); Engineering Council of South Africa (ECSA), 1999.
• Fellow of the South African Institute of Electrical Engineers (FSAIEE), SA 2011.
• Senior Member, Institute of Electrical and Electronic Engineers (SMIEEE), USA, 2012.

Patents/Awards and honors

• Best Oral Presentation and Paper Award, 2020 7th International Conference on Power and Energy Systems Engineering (CPESE 2020), September 26-29, 2020, Fukuoka Institute of Technology, Fukuoka, Japan. For paper: What Outage Attributes Affect the Frequencies of Forced Transformer Outages in Eskom Regions? Evidence from 2007-2016 Data.
• SAIEE Engineer of the Year, sponsored by ACTOM, 2016, Awarded to “a member of the SAIEE who has energetically and voluntarily worked towards promoting electrical science and its applications to the benefit of the SAIEE, members of the Southern Africa community through his involvement in Institute affairs”.
• Elected to Senior Member  of IEEE (SMIEEE), USA, 2012, To be eligible for application or nomination, candidates must “ Be engineers, scientists, educators, technical executives, or originators in IEEE-designated fields; Have experience reflecting professional maturity, Have been in professional practice for at least ten years (with some credit for certain degrees), and Show significant performance over a period of at least five of their years in professional practice”, IEEE.
• Elected to Fellow of SAIEE (FSAIEE), SA, 2011, Awarded to “Senior Members of at least 5 years standing who have had at least 5 years of superior responsibility and leadership in electrical engineering and have made an important contribution to electrical engineering”, SAIEE.
• Highly Commended Award for Innovation in Eskom, 2009, Awarded by the General Manager of Research Department in recognition of research contributions.

Ephraim Nhlanhla Mbuli is Professor in the Department of Electrical and Smart Engineering, College of Science, Engineering and Technology (CSET), University of South Africa (UNISA). He holds a BScEng (Electrical Engineering) from the University of Natal (1994), BEng (Hons) in Electrical Engineering from the University of Pretoria (1998), MEng (Hons) from the University of Pretoria (2000), a DIng from the University of Johannesburg (2006), and a BSc (Statistics and Operations Research) from the University of South Africa (2021)

He has been registered as a Professional Engineer with the Engineering Council of South Africa (ECSA) from 1999. He has been a Fellow of the South African Institute of Electrical Engineers (FSAIEE), South Africa, since 2011 and has been a Senior Member of Institution of Electrical and Electronic Engineers (SMIEEE), USA, since 2012.

Prior to joining UNISA in October 2023, he had practiced continuously in industry since 1995, and his last employer was Eskom Holdings SoC Limited where he was employed from December 1999, and where he spent the last 15 years as Corporate Specialist for Transmission and Distribution Planning.

Also, before joining UNISA, he had been associated with the University of Johannesburg as a visiting member of staff from 2011, spending the last 3 years to 2023 as a visiting Associate Professor of Electrical Engineering.