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Market Players

Singapore’s electricity industry is structured to facilitate competitive wholesale and retail markets. This was achieved by separating the ownership of the contestable parts of the industry from those with characteristics of a natural monopoly. To promote the entry of new participants, licenses have also been granted to parties that intend to establish new businesses to participate as electricity generators or retailers. Current market participants are listed below.

Consumers

Consumers have been classified as being either contestable or non-contestable depending on their level of electricity usage. Contestable consumers may choose to purchase electricity from a retailer or directly from the wholesale market or indirectly from the wholesale market through SP Services. Non-contestable consumers are supplied by SP Services.

Energy Market Authority (EMA)

The EMA is the regulator of the electricity industry and has the ultimate responsibility for the market framework and ensuring that the interests of consumers are protected.

Energy Market Company (EMC)

EMC operates and administers the wholesale market. This role includes calculating prices, scheduling generation, clearing and settling market transactions and procuring ancillary services. EMC also administers the rule change process and assists the Market Surveillance and Compliance Panel and Dispute Resolution Counsellor.

Power System Operator (PSO)

The PSO (a division of the EMA) is responsible for ensuring the reliable supply of electricity to consumers and the secure operation of the power system. The PSO controls the dispatch of generation facilities, co-ordinates outages and power system emergency planning and directs the operation of the high-voltage transmission system.

Market Participants

Generation Licensees
Generation Licensees generate electricity for injection into the power grid. They offer to generate various quantities of electricity at their associated prices. All offers are then pooled in the wholesale market to match the demand for electricity.
Active generators are:  Sembcorp Cogen Pte Ltd, National Environment Agency, Keppel Merlimau Cogen Pte LtdSenoko Waste-To-Energy Pte Ltd (in its capacity as Trustee of Senoko Trust),Tuas Power Generation Pte LtdSenoko Energy Pte Ltd, Shell Eastern Petroleum Pte Ltd, Keppel Seghers Tuas Waste-To-Energy Plant Pte Ltd (in its capacity as Trustee of Tuas DBOO Trust)ExxonMobil Asia Pacific Pte LtdPacificLight Power Pte Ltd, YTL PowerSeraya Pte Ltd, Tuaspring Pte Ltd, TP Utilities Pte Ltd, Singapore Refining Company Pte Ltd

Interruptible Loads
Interruptible loads are contestable consumers of electricity that participate in the wholesale market and allow their supply of electricity to be interrupted in the event of a system disturbance in exchange for reserve payments.

Market Support Services Licensee
An MSSL is authorised to provide market support services. Such services include consumer registration and transfer, meter reading and meter data management, retail settlements and billing for contestable consumers. SP Services Ltd is the only MSSL.

Retail Electricity Licensees
Retailers that sell electricity to contestable consumers are licensed by the EMA. Retailers that are registered as market participants purchase electricity directly from the wholesale market.
Active retailers are: Keppel Electric Pte Ltd, Sembcorp Power Pte Ltd, Senoko Energy Supply Pte Ltd, Seraya Energy Pte Ltd, Tuas Power Supply Pte Ltd, Diamond Energy Merchants Pte LtdPacificLight Energy Pte Ltd, Hyflux Energy Pte Ltd, Red Dot Power Pte Ltd, Ohm Energy Pte. Ltd., Sun Electric Power Pte Ltd, Sunseap Energy Pte Ltd, Best Electricity Supply Pte LtdI Switch Pte Ltd, Charis Electric Pte Ltd, Environmental Solutions (Asia) Pte Ltd, Union Power Pte Ltd, Just Electric Pte Ltd, Cleantech Solar Singapore Assets Pte Ltd, Energy Supply Solutions Pte Ltd, SilverCloud Energy Pte Ltd,
SmartCity Energy Pte Ltd.

Transmission Licensee
SP PowerAssets Ltd owns and is responsible for maintaining the transmission system.

Wholesale Market Traders
Companies, other than generators or retailers, that are licensed by the EMA to trade in the wholesale electricity market are wholesale market traders.
The current wholesale market traders are: Diamond Energy Managers Pte Ltd, Pfizer Asia Pacific Pte Ltd, MSD International GmbH (Singapore Branch), Banyan Utilities Pte Ltd, Green Power Asia Pte Ltd, Singapore LNG Corporation Pte Ltd, Glaxo Wellcome Manufacturing Pte Ltd - GlaxoSmithKline Biologicals, CGNPC Solar-Biofuel Power (Singapore) Pte Ltd, Sunseap Leasing Pte LtdLYS Genco Beta Pte Ltd, Sembcorp Solar Singapore Pte Ltd
Singapore District Cooling Pte Ltd, Nanyang Technological University, GreenSync Holdings Pte Ltd, Sun Electric Energy Assets, Air Liquide Singapore Private Limited, Changi Mega Solar Pte LtdPublic Utilities BoardSunseap Leasing Beta Pte Ltd.

Applications Under Consideration

Withdrawal By Market Participants
EMC has received a notice under Chapter 2, Section 4.1.1 of the Singapore Electricity Market Rules from the following market participants, stating their intention to cease participation in the wholesale electricity markets.

The registration of the following market participants will expire on the dates stated in the last column of the table below:

 
Market Participant (MP)Trading Day upon which the MP intends to cease to participate in the wholesale electricity marketsExpiry Date of the registration of the MP
Tuas Power Ltd26 Oct 200926 Oct 2009
Senoko Power Limited31 Mar 201031 Mar 2010
Keppel Seghers Tuas Waste-to-Energy Plant Pte Ltd23 Jul 201023 Jul 2010
Schering-Plough Ltd30 Mar 201102 Apr 2011
IUT Singapore Pte Ltd11 May 201111 May 2011
PowerSeraya Ltd22 May 201222 May 2012
ISK Singapore Pte Ltd19 Nov 201311 Dec 2013
KiWi Power Singapore Pte Ltd11 May 201611 May 2016
Tong Teik Pte Ltd18 May 201618 May 2016
Air Products Pte Ltd23 Dec 201623 Dec 2016
ECO Special Waste Management Pte Ltd07 Dec 201707 Dec 2017

Market Participants

Applications Under Consideration

Withdrawing Market Participants