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Technical Working Group


The Rules Change Panel has a Technical Working Group (TWG) to assist it in reviewing technical changes to the Market Rules.

The TWG is responsible for examining the on-going evolution of the dispatch and price discovery process, balancing economic, financial and technical considerations in creating more efficient wholesale electricity markets.

The TWG consists of eight members:

Chairperson nominated by EMC

Wang Jing
Wang Jing manages the Market Administration team at EMC responsible for advising the Rules Change Panel and the EMC Board on market design issues and for evolving the wholesale electricity market for efficiency gains. She gained extensive experience in the areas of development and operation during her 12 years with EMC. Through the analysis of rule change proposals for the improvement of a competitive market design, she has developed a comprehensive knowledge of market governance, market design, rules and policy formulation, simulation and modelling. Wang Jing graduated from the Nanyang Technological University (NTU), Singapore with a Ph.D in Electrical and Electronic Engineering, and also holds a Bachelor of Engineering degree in Electrical Engineering from Chongqing University, China.

Four experts nominated by market participants (excluding the Transmission Licensee)

Calvin Quek
Calvin Quek is the Assistant Vice President, Trading & Portfolio Management of Tuaspring Pte Ltd.  He manages the trading team’s day to day electricity, gas market operations and hedging portfolio. He had been instrumental in setting up Tuaspring’s electricity futures trading desk, electricity and gas management systems during the development phase of the power plant. He have also played a lead role in helping Tuaspring secure both commissioning gas as well as long term gas supply. He holds a Bachelor degree in Electrical & Electronic Engineering from Nanyang Technological University, Singapore.

Liu Jidong
Liu Jidong is the Senior Manager (Optimisation) of YTL PowerSeraya Pte Ltd. He has more than 10 years of work experience in the power industry and the electricity market. He is responsible for the development and execution of business strategy initiatives across the business, driving analytics and synthesizing cross-divisional findings to form overall optimized strategies. He holds a PH.D. degree in Electrical & Electronic Engineering from Nanyang Technological University, Singapore.

Lim Xingyi
Lim Xingyi is the Deputy Manager (Trading & Regulation) of Tuas Power Generation Pte Ltd. She manages regulatory matters for the company through the evaluation of policies and consultation papers issued by the government, regulator and market design panel etc. She is also involved in performing electricity trading and fuel optimisation, market analysis and modelling. Xingyi graduated with a Bachelor degree in Chemical Engineering from National University of Singapore.

Tini Mulyawati
Tini Mulyawati is the Head of Trading at Keppel Infrastructure Holdings Pte Ltd. Her role involves managing a team responsible for electricity trading in the Gas-to-Power division of the company. She played a vital role in the commencement of the company's electricity trading and fuel hedging where a new IT system and wholesale trading policy were first developed for Keppel Merlimau Cogen's entry into the NEMS. She has more than 15 years of experience in the power generation industry in the fields of trading, settlement, hedging, pricing, analysis and administration. She holds a Bachelor of Science Degree in Business Administration and a Bachelor of Computer Science major in Information System.

One person nominated by the Transmission Licensee

Chu Xiao En
Chu Xiao En currently heads the Transmission Planning section of SP PowerGrid Ltd. She manages a team responsible for the planning of the transmission network, comprising the 66kV, 230kV and 400kV network, in order to meet system demand growth, connect customers and generators as well as replace aging assets. Xiao En holds a Bachelor of Engineering degree in Electrical & Electronic Engineering from Imperial College London, and a Masters of Science degree in Electrical Engineering from Stanford University.

One person nominated by the Power System Operator (PSO)

Loh Poh Soon
Loh Poh Soon is a Specialist in the System Control Department of the Power System Operation Division of the Energy Market Authority. The Department is responsible for round the clock real-time monitoring and control of the power system in Singapore. His job responsibilities include the coordination and approval of generators and transmission equipment outage schedules, adequacy and security assessments of the power system and evaluation of the impact of proposed rules changes, especially those related to operation of the power system. Poh Soon holds a Bachelor of Engineering degree in Electrical & Electronic Engineering from Nanyang Technological University, Singapore and a Master of Science degree in Industrial & Systems Engineering from National University of Singapore.

One market clearing engine expert nominated by EMC

Cherie Chen
Cherie Chen is the Principal Market Clearing Engine (MCE) Specialist in EMC and one of the core members in the MCE support team. The MCE support team is responsible for the MCE maintenance and enhancement arising from operational needs and rule changes. She is also actively involved in enhancing the market system and improving market operation efficiency by identifying gaps between business processes and the market system, suggesting improvements to enhance the efficiency and modelling accuracy of the MCE. Cherie holds a bachelor degree in Electrical & Electronic Engineering from Nanyang Technological University, Singapore and a master degree in Materials Science & Engineering from Massachusetts Institute of Technology, USA.