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The Singapore Electricity Market Rules (Market Rules) govern wholesale operations of the NEMS.
Modifications to the Market Rules are updated on this website on a quarterly basis in April, July, October and January. In April, July and October, we update and publish individual chapters with modifications that come into effect on or before April, July and October respectively. In January, we publish a new release of the Market Rules (all chapters) dated January. This release includes all modifications that come into effect on or before January of the particular year.
Please note that modifications approved by the EMA but not yet in effect at the date of each quarterly update and/or annual release are not included. Depending on their nature, some modifications do not take effect immediately upon approval. To view these and other modifications approved by the EMA after each quarterly update and/or annual release, please click here.
|Chapter||Title||Date Published||Downloads||Tracked Version|
|Chapter 1||Introduction and Interpretation of the Rules||01 Jan 2013|| (512kB)|
|Chapter 2||Participation||01 Jan 2013|| (788kB)|
|Appendix 2A||Technical requirements for registration as a market participant||01 Jan 2013|| (200kB)|
|Appendix 2B||Technical requirements for registration of facilities||01 Jan 2013|| (255kB)|
|Chapter 3||Administration, Supervision & Enforcement||01 Jan 2013|| (959kB)|
|Appendix 3A||Declaration of Nominee for Membership on the Rules Change Panel||01 Jan 2013|| (171kB)|
|Appendix 3B||Declaration for nomination on the membership on the Market Surveillance Panel, as Dispute Resolution Counsellor or as a person within the group that may be selected as a member of a Dispute Resolution Panel||01 Jan 2013|| (153kB)|
|Appendix 3C||List of organisations eligible to submit a list or further lists of nominees for appointment to the Rules Change Panel||01 Jan 2013|| (118kB)|
|Appendix 3D||Declaration For Appointment As A Member of The Market Surveillance and Compliance Panel (New Appendix Arising from Approved Rule Change)||01 Jan 2013|| (158kB)|
|Chapter 4||Connection and Metering||01 Jan 2013|| (194kB)|
|Chapter 5||System Operation||01 Jan 2013|| (888kB)|| (893kB)|
|Appendix 5A||Performance Standards for Ancillary Services||01 Jan 2013|| (321kB)|
|Appendix 5B||Performance Standards for System Operation||01 Jan 2013|| (204kB)|
|Appendix 5C||Outage Scheduling Information||01 Jan 2013|| (209kB)|
|Chapter 6||Market Operation||01 Jan 2013|| (620kB)|| (625kB)|
|Appendix 6A||Market Operations Timetable||01 Jan 2013|| (367kB)|| (374kB)|
|Appendix 6B||Input Data for the Market Clearing Engine||01 Jan 2013|| (196kB)|
|Appendix 6C||Output Data for the Market Clearing Engine||01 Jan 2013|| (203kB)|
|Appendix 6D||Market Clearing Formulation (Part 1)||01 Jan 2013|| (199kB)|
|Appendix 6D||Market Clearing Formulation (Part 2)||01 Jan 2013|| (239kB)|
|Appendix 6E||Standing Capability Data||01 Jan 2013|| (255kB)|
|Appendix 6F||Content of Offers||01 Jan 2013|| (95kB)|
|Appendix 6G||Dispatch Related Data||01 Jan 2013|| (287kB)|
|Appendix 6H||Advisory Notices||01 Jan 2013|| (213kB)|
|Appendix 6I||Compensation in the Event of Load Shedding||01 Jan 2013|| (33kB)|
|Appendix 6J||Price Limits and Constraint Violation Penalties||01 Jan 2013|| (317kB)|
|Chapter 7||Settlement||01 Jan 2013|| (319kB)|
|Appendix 7A||Calculation of Reserve Responsibility Shares||01 Jan 2013|| (323kB)|
|Appendix 7B||Process for Settlement Adjustments for Metering Errors||01 Jan 2013|| (345kB)|
|Chapter 8||Definitions||01 Jan 2013|| (441kB)|