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 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
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 LtdNational Environment AgencyKeppel Merlimau Cogen Pte LtdSenoko Waste-To-Energy Pte Ltd (in its capacity as Trustee of Senoko Trust),Tuas Power Generation Pte LtdSenoko Energy Pte LtdShell Singapore Pte LtdKeppel Seghers Tuas Waste-To-Energy Plant Pte Ltd(in its capacity as Trustee of Tuas DBOO Trust)ExxonMobil Asia Pacific Pte LtdPacificLight Power Pte LtdYTL PowerSeraya Pte LtdTP Utilities Pte LtdSingapore Refining Company Pte Ltd, TuasOne Pte Ltd, Sembcorp Floating Solar Singapore Pte Ltd, Sembcorp Solar Singapore Pte Ltd and Taser Power 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 LtdSembcorp Power Pte LtdSenoko Energy Supply Pte LtdSeraya Energy Pte LtdTuas Power Supply Pte LtdDiamond Electric Pte LtdPacificLight Energy Pte LtdSunseap Energy Pte LtdUnion Power Pte LtdJust Electric Pte LtdCleantech Solar Singapore Assets Pte Ltd, Bioenergy Pte Ltd, Flo Energy Singapore Pte Ltd and ENGIE South East Asia 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: Green Power Asia Pte LtdSingapore LNG Corporation Pte Ltd, JE Green Solutions Pte Ltd, Sunseap Leasing Pte LtdLYS Genco Beta Pte LtdSingapore District Cooling Pte LtdAir Liquide Singapore Private LimitedPublic Utilities BoardTerrenus Energy SL2 Pte LtdSolarland Alpha Assets Pte LtdPSA Corporation LimitedCrystal Clear Environmental Pte LtdTerrenus Energy SL1X Pte Ltd, BEWGI-UE NEWater Pte Ltd, HSBC Institutional Trust Services (Singapore) Limited (in its capacity as trustee of AIMS APAC REIT)Sunseap Commercial Assets Pte Ltd, and Terrenus Energy SR3 Pte Ltd

Applications Under Consideration
MA Energy (SG) Pte Ltd.

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 Trading Day upon which the MP intends to cease to participate in the wholesale electricity markets Expiry Date of the registration of the MP
Tuas Power Ltd 26 Oct 2009 26 Oct 2009
Senoko Power Limited 31 Mar 2010 31 Mar 2010
Keppel Seghers Tuas Waste-to-Energy Plant Pte Ltd 23 Jul 2010 23 Jul 2010
Schering-Plough Ltd 30 Mar 2011 02 Apr 2011
IUT Singapore Pte Ltd 11 May 2011 11 May 2011
PowerSeraya Ltd 22 May 2012 22 May 2012
ISK Singapore Pte Ltd 19 Nov 2013 11 Dec 2013
KiWi Power Singapore Pte Ltd 11 May 2016 11 May 2016
Tong Teik Pte Ltd 18 May 2016 18 May 2016
Air Products Pte Ltd 23 Dec 2016 23 Dec 2016
ECO Special Waste Management Pte Ltd 07 Dec 2017 07 Dec 2017
GreenSync Holdings Pte Ltd 27 Apr 2018 27 Apr 2018
Banyan Utilities Pte Ltd 22 May 2018 22 May 2018
Energy Supply Solutions Pte Ltd 14 Jun 2018 14 Jun 2018
SmartCity Energy Pte Ltd 30 Jun 2018 30 Jun 2018
Glaxo Wellcome Manufacturing Pte Ltd - GlaxoSmithKline Biologicals 01 Jul 2018 01 Jul 2018
Nanyang Technological University 01 Jul 2018 01 Jul 2018
Pfizer Asia Pacific Pte Ltd 01 Jul 2018 01 Jul 2018
Diamond Energy Managers Pte Ltd 31 Dec 2018 31 Dec 2018
Charis Electric Pte Ltd 31 Dec 2018 31 Dec 2018
SingNet Pte Ltd 31 Dec 2018 31 Dec 2018
Peerer Energy Pte Ltd 10 Jul 2019 10 Jul 2019
Environmental Solutions (Asia) Pte Ltd 25 Nov 2019 25 Nov 2019
Red Dot Power Pte Ltd 02 Dec 2020 02 Dec 2020
Changi Mega Solar Pte Ltd 24 Dec 2020 24 Dec 2020
Sun Electric Power Pte Ltd 31 Dec 2020 31 Dec 2020
MyElectricity Pte Ltd 15 Sep 2021 15 Sep 2021
I Switch Pte Ltd 21 Dec 2021 21 Dec 2021
UGS Energy Pte Ltd 31 Dec 2021 31 Dec 2021
Hyflux Energy Pte Ltd 30 Mar 2022 26 Apr 2022
Tuaspring Pte Ltd 31 May 2022 21 Jun 2022
Terrenus Energy Pte Ltd 04 Nov 2022 04 Nov 2022
Ohm Energy Pte Ltd 30 Nov 2022 30 Nov 2022
Enel X Singapore Pte Ltd 15 May 2023 15 May 2023 
Sunseap Energy Ventures Pte Ltd 30 Jun 2023 30 Jun 2023
Best Electricity Supply Pte Ltd 30 Jun 2023 30 Jun 2023
GreenCity Energy Pte Ltd 30 Jun 2023  30 Jun 2023 
Sunseap VPower Pte Ltd 17 Nov 2023 17 Nov 2023
MSD International GmbH (Singapore Branch) 26 Dec 2023 26 Dec 2023
Sunseap Leasing Beta Pte Ltd 29 Feb 2024 29 Feb 2024