Our People

Lek Keng joined the Energy Studies Institute as a Research Fellow in June 2026. He completes his PhD in Chemical Engineering from Universiti Teknologi Malaysia (UTM), where his doctoral research developed an integrated optimisation framework for electric bus charging scheduling and infrastructure planning with solar power integration. He also holds a Bachelor of Chemical Engineering from UTM.

Prior to joining ESI, Lek Keng worked as a Research Assistant at PROSPECT, Universiti Teknologi Malaysia, where his research focused on energy systems modelling and optimisation for clean energy transition planning across Southeast Asia. His work includes developing MILP  and optimising battery energy storage systems, modelling green hydrogen production, modelling cross-border energy trading, and conducting energy audits for buildings.

• Renewable energy system optimisation and planning
• Transport electrification
• Green hydrogen modelling
• Carbon capture, utilisation and storage (CCUS)

Lim, L.K., Hashim, W.S., Zubir, M.A., Ab Muis, Z., Chee, W.C., Muda, N., et al. (2025). Cost optimisation of green hydrogen production from floating solar photovoltaic system. Renewable Energy, 245, 122808.

Lim, L.K., Ab Muis, Z., Hashim, H., Ho, W.S., Bong, C.P.C. (2023). Review of the energy forecasting and scheduling model for electric buses. Energy, 263, 125773.

Chee, W.C., Ho, W.S., Hashim, H., Lim, L.K., Ab Muis, Z., Nizamuddin, A.D., Wong, K.Y., Overland, I., Shidiq, M., Pradnyaswari, I. (2025). Renewable energy trade among the ASEAN countries and the road to net-zero carbon emissions. Energy Strategy Reviews, 62, 101878.

Jamaludin, N.F., Ab Muis, Z., Hashim, H., Mohamed, O.Y., Keng, L.L. (2024). A holistic mitigation model for net zero emissions in the palm oil industry. Heliyon, 10(6).

Lim, L.K., Ab Muis, Z., Hashim, H., Ho, W.S., Chee, W.C. (2022). Electric bus charging schedule for multiple routes via mathematical modelling. Chemical Engineering Transactions, 97, 151–156.

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