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The Smart Energy Code

The Smart Energy Code (SEC) was designated on 23 September 2013 following the granting of the DCC License. The current version in force (SEC 6.20) came into effect on 4 November 2019.

Secretary of State Variations to the SEC

The Secretary of State (SoS) may direct variations to SEC provisions. Such variations are not subject to the process under SEC Section D ‘Modification Process’, but may still vary existing provisions in the SEC. A log of all the SoS directed variations to date can be found on the SoS Variations to the SEC webpage. For information on how the SEC and supporting documentation is developing prior to SoS designation, please see The Developing SEC sub-page.

  • Consolidated SEC
  • SEC Sections
  • SEC Subsidiary Document
  • SEC Section Guidance
  • The Digital SEC
DocumentEffectiveDownload
SEC 6.20 - 4th November 201904/11/2019Download
SEC 6.19 – 25th October 201925/10/2019Download
SEC 6.18 – 18th October 201918/10/2019Download
SEC 6.17 - 28th July 201928/07/2019Download
SEC 6.16 - 4th July 201904/07/2019Download
SEC 6.15 - 27th June 201927/06/2019Download
SEC 6.14 - 21st June 201921/06/2019Download
SEC 6.13 - 14th June 201914/06/2019Download
SEC 6.12 - 26th April 201926/04/2019Download
SEC 6.11 – 23rd April 201923/04/2019Download
SEC 6.10 – 15th April 201915/04/2019Download
SEC 6.9 - 13th March 201913/03/2019Download
SEC 6.8 - 4th March 201904/03/2019Download
SEC 6.7 - 28th February 201928/02/2019Download
SEC 6.6 - 14th February 201914/02/2019Download
SEC 6.5 - 28th January 201928/01/2019Download
SEC 6.4 - 21st January 201921/01/2019Download
SEC 6.3 - 5th December 201805/12/2018Download
SEC 6.2 - 8th November 201808/11/2018Download
SEC 6.1 - 1st November 201801/11/2018Download
SEC 6.0 - 28th October 201829/10/2018Download
SEC 5.23 - 4th October 201809/10/2018Download
SEC 5.22 - 18th September 201818/09/2018Download
SEC 5.21 - 22nd August 201822/08/2018Download
SEC 5.20 - 18th July 201818/07/2018Download
SEC 5.19 - 25th June 201825/06/2018Download
SEC 5.18 - 8th June 201808/06/2018Download
SEC 5.17 - 5th June 201805/06/2018Download
SEC 5.16 - 31st May 201831/05/2018Download
SEC 5.15 - 25th May 201825/05/2018Download
SEC 5.14 - 22nd February 201822/02/2018Download
SEC 5.13 - 1st February 201801/02/2018Download
SEC 5.12 - 22nd November 201722/11/2017Download
SEC 5.11 - 6th November 201706/11/2017Download
SEC 5.10 - 14th September 201714/09/2017Download
SEC 5.9 - 21st July 201721/07/2017Download
SEC 5.8 - 12th July 201712/07/2017Download
SEC 5.7 - 11th May 201711/05/2017Download
SEC 5.6 - 1st April 201701/04/2017Download
SEC 5.5 - 15th March 201715/03/2017Download
SEC 5.4 - 9th February 201709/02/2017Download
SEC5.3 - 26th January 201726/01/2017Download
SEC 5.2 - 21st December 201621/12/2016Download
SEC 5.1 - 14th December 201614/12/2016Download
SEC 5.0 - 8th November 201608/11/2016Download
SEC 4.17 - 27th October 201627/10/2016Download
SEC 4.16 - 20th October 201620/10/2016Download
SEC 4.15 - 18th August 201618/08/2016Download
SEC 4.14 - 13th July 201613/07/2016Download
SEC 4.13 - 6th July 201606/07/2016Download
SEC 4.12 - 15th June 201615/06/2016Download
SEC 4.11 - 6th June 201606/06/2016Download
SEC 4.10 - 18th April 201618/04/2016Download
SEC 4.9 - 9th March 201609/03/2016Download
SEC 4.8 - 10th February 201610/02/2016Download
SEC 4.7 - 9th February 201609/02/2016Download
SEC 4.6 - 21st October 201521/10/2016Download
SEC 4.5 - 28th September 201528/09/2015Download
SEC 4.4 - 14th September 201514/09/2015Download
SEC 4.3 - 1st July 201501/07/2015Download
SEC 4.2 - 18th March 201518/03/2015Download
SEC 4.1 - 26th January 201526/01/2015Download
SEC 4.0 - 14th January 201514/01/2015Download
SEC 3.0 - 31st July 201431/07/2014Download
SEC 2.2 - 27th May 201427/05/2014Download
SEC 2.1 - 6th April 201406/04/2014Download
SEC 2.0 - 31st March 201431/03/2014Download
SEC 1.0 - 23rd September 201323/09/2013Download
DocumentEffectiveDownload
SEC - Cover Page, Introduction, Version Control and Contents04/11/2019Download
SEC Section A - Definitions and Interpretation28/07/2019Download
SEC Section B - Accession18/07/2018Download
SEC Section C - Governance04/03/2019Download
SEC Section D - Modification Process04/03/2019Download
SEC Section E - Registration Data31/05/2018Download
SEC Section F - Smart Metering System Requirements04/07/2019Download
SEC Section G - Security04/11/2019Download
SEC Section H - DCC Services27/06/2019Download
SEC Section I - Data Privacy13/03/2019Download
SEC Section J - Charges01/11/2018Download
SEC Section K - Charging Methodology31/05/2018Download
SEC Section L - Smart Metering Key Infrastructure and DCC Key Infrastructure13/03/2019Download
SEC Section M - General23/04/2019Download
SEC Section N - SMETS1 Meters13/03/2019Download
SEC Section P - Production Proving13/03/2019Download
SEC Section T - Testing During Transition18/07/2018Download
SEC Section X - Transition01/11/2018Download
SEC Section Z - Alt HAN Arrangements26/04/2019Download
SEC Schedule 1 - Framework Agreement22/02/2018Download
SEC Schedule 2 - Accession Agreement22/02/2018Download
SEC Schedule 3 - Specimen Bilateral Letter22/02/2018Download
SEC Schedule 4 - SECCo22/02/2018Download
SEC Schedule 5 - Accession Information22/02/2018Download
SEC Schedule 6 - Specimen Form of Letter of Credit22/02/2018Download
SEC Schedule 7 - Specimen Enabling Services Agreement18/07/2018Download
SEC Schedule 8 - GB Companion Specification v1.029/11/2017Download
SEC Schedule 8 - GB Companion Specification v1.129/11/2017Download
SEC Schedule 8 - GB Companion Specification v2.001/02/2018Download
SEC Schedule 8 - GB Companion Specification v2.105/06/2018Download
SEC Schedule 8 - GB Companion Specification v3.005/06/2018Download
SEC Schedule 8 - GB Companion Specification v3.104/07/2019Download
SEC Schedule 8 - GB Companion Specification v3.204/07/2019Download
SEC Schedule 9 - Smart Metering Equipment Technical Specifications 1 v1.201/02/2017Download
SEC Schedule 9 - Smart Metering Equipment Technical Specifications 2 v2.001/02/2017Download
SEC Schedule 9 - Smart Metering Equipment Technical Specifications 2 v3.001/02/2018Download
SEC Schedule 9 - Smart Metering Equipment Technical Specifications 2 v3.108/11/2018Download
SEC Schedule 9 - Smart Metering Equipment Technical Specifications 2 v4.008/11/2018Download
SEC Schedule 9 - Smart Metering Equipment Technical Specifications 2 v4.104/07/2019Download
SEC Schedule 9 - Smart Metering Equipment Technical Specifications 2 v4.204/07/2019Download
SEC Schedule 10 - Communications Hub Technical Specifications v1.029/11/2017Download
SEC Schedule 10 - Communications Hub Technical Specifications v1.101/02/2018Download
SEC Schedule 10 - Communications Hub Technical Specifications v1.204/07/2019Download
SEC Schedule 10 - Communications Hub Technical Specifications v1.304/07/2019Download
SEC Schedule 11 - TS Applicability Tables04/11/2019Download
DocumentEffectiveDownload
SEC Appendix A - Device Certificate Policy29/11/2017Download
SEC Appendix B - Organisation Certificate Policy08/06/2018Download
SEC Appendix C - SMKI Compliance Policy29/11/2017Download
SEC Appendix D - SMKI Registration Authority Policies and Procedures29/11/2017Download
SEC Appendix E - DCC User Interface Services Schedule28/07/2019Download
SEC Appendix F - Minimum Communication Services for SMETS1 Meters29/11/2017Download
SEC Appendix G - DCC Gateway Connection Code of Connection29/11/2017Download
SEC Appendix H - CH Handover Support Materials01/02/2018Download
SEC Appendix I - CH Installation and Maintenance Support Materials28/07/2019Download
SEC Appendix J - Enduring Testing Approach Document13/03/2019Download
SEC Appendix K - SMKI and Repository Test Scenarios Document29/11/2017Download
SEC Appendix L - SMKI Recovery Procedure29/11/2017Download
SEC Appendix M - SMKI Interface Design Specification08/06/2018Download
SEC Appendix N - SMKI Code of Connection29/11/2017Download
SEC Appendix O - SMKI Repository Interface Design Specification29/11/2017Download
SEC Appendix P - SMKI Repository Code of Connection29/11/2017Download
SEC Appendix Q - IKI Certificate Policy29/11/2017Download
SEC Appendix R - Common Test Scenarios Document15/04/2019Download
SEC Appendix S - DCCKI Certificate Policy01/11/2018Download
SEC Appendix T - DCCKI Interface Design Specification27/06/2019Download
SEC Appendix U - DCCKI Repository Interface Design Specification29/11/2017Download
SEC Appendix V - DCCKI CoCo and DCCKI Repository CoCo29/11/2017Download
SEC Appendix W - DCCKI Registration Authority Policies and Procedures27/06/2019Download
SEC Appendix X - Registration Data Interface Specification29/11/2017Download
SEC Appendix Y - Registration Data Interface Code of Connection29/11/2017Download
SEC Appendix Z - CPL Requirements Document13/03/2019Download
SEC Appendix AA - Threshold Anomaly Detection Procedures28/07/2019Download
SEC Appendix AB - Service Request Processing Document28/07/2019Download
SEC Appendix AC - Inventory, Enrolment and Decommissioning Procedures28/07/2019Download
SEC Appendix AD - DCC User Interface Specification v1.001/11/2018Download
SEC Appendix AD - DCC User Interface Specification v2.005/06/2018Download
SEC Appendix AD - DCC User Interface Specification v3.028/07/2019Download
SEC Appendix AE - DCC User Interface Code of Connection29/11/2017Download
SEC Appendix AF - Message Mapping Catalogue v1.029/11/2017Download
SEC Appendix AF - Message Mapping Catalogue v2.001/02/2018Download
SEC Appendix AF - Message Mapping Catalogue v3.028/07/2019Download
SEC Appendix AG - Incident Management Policy28/07/2019Download
SEC Appendix AH - Self Service Interface Access Control Specification28/07/2019Download
SEC Appendix AI - Self Service Interface Code of Connection27/06/2019Download
SEC Appendix AJ - SEC Variation Testing Approach Document25/06/2018Download
SEC Appendix AK - SEC Variation Testing Approach Document for SMETS1 Services04/11/2019Download
SEC Appendix AL - SMETS1 Transition and Migration Approach Document28/07/2019Download
SEC Appendix AM - SMETS1 Supporting Requirements26/07/2019Download
SEC Appendix AM - Annex A - Device Model Variations to Equivalent Steps Matrix26/07/2019Download
DocumentEffectiveDownload
SEC Section B - Accession29/11/2017Download
SEC Section C - Governance29/11/2017Download
SEC Section D - Modification Process29/11/2017Download
SEC Section E - Registration Data29/11/2017Download
SEC Section F - Smart Metering System Requirements29/11/2017Download
SEC Section G - Security29/11/2017Download
SEC Section H - DCC Services Overview29/11/2017Download
SEC Section I - Data Privacy29/11/2017Download
SEC Section J - Charges29/11/2017Download
SEC Section K - Charging Methodology29/11/2017Download
SEC Section L - SMKI and DCCKI29/11/2017Download
SEC Section M - General29/11/2017Download
SEC Section N - SMETS1 Meters29/11/2017Download
SEC Section T - Testing during Transition29/11/2017Download
SEC Section X - Transition29/11/2017Download
SEC Section Z - Alt HAN29/11/2017Download
SEC Section A - Definitions & Interpretation29/11/2017Download
Note: The ‘Effective’ date for SEC Schedules 8, 9 and 10 is the date that these were designated (or re-designated when superseded) into the SEC. For applicability dates of the different versions of these SEC Schedules, please refer to SEC Schedule 11 ‘TS Applicability Tables’.

Technical Specification Compatibility Matrix

SEC Section F2.11 sets out the requirements for a matrix specifying which versions of each

  • Technical Specification are compatible with which Versions of the other Technical Specification; and
  • part(s) of the SMETS are compatible with which Versions of each other part(s) of the SMETS.

Parse and Correlate Applicability Matrix

SEC Section A3.35, sets out the requirement for a ‘Parse and Correlate Applicability Matrix’.

It lists each version of the Parse and Correlate Software that has been released, along with the associated versions of the:

  • DCC User Interface Specification (DUIS) and DUIS XML that is contained within it;
  • Message Mapping Catalogue; and
  • Great Britain Companion Specification (GBCS).

The Parse and Correlate Applicability Matrix is available to download from the Related Documentation list on this webpage.

SEC Statement of live documents

As set out in the Panel Release Management Policy, a statement of current live SEC Documentation has been produced by SECAS as a reference aid to help SEC Parties identify when different SEC documentation was first designated and subsequently amended. The statement includes two worksheets

The ‘SEC statement of live SEC docs‘ worksheet, includes:

  • The type of SEC content (Section, Schedule or Appendix);
  • associated reference letter or number;
  • title of the SEC Section, Schedule or Appendix;
  • specific version number (if applicable);
  • effective from dates;
  • effective to date (if applicable);
  • Installation Validity Period end date (if applicable);
  • Maintenance  Validity Period end date (if applicable);
  • Last Changes implemented; and
  • Date the last change were made.

The ‘Other SEC documents’ worksheet provides details of other SEC required documentation. These documents are not subject to the Section D Modification Process, but is subject to prescribed governance processes as set out in the SEC.

Within the ‘Other SEC documents‘ worksheet the following specific pieces of information are provided:

  • Source of requirement for the SEC document;
  • Name of the SEC document;
  • Who is responsible for establishing and maintaining it;
  • Who is the approve of the document (if different from who created it);
  • current version; and
  • information on where to find it, if publicly available or if it is restricted to certain persons (e.g. the SEC Panel or one of its Sub-Committees).

Documents