Development Versions of each SEC Section are available to aid SEC Parties in understanding how the SEC is developing in between the designation of new versions of the SEC.
These show live content alongside any content that has been concluded on by BEIS but not yet designated by the Secretary of State (SoS). They also include text that is still undergoing consultation and has not yet been concluded on. The table at the beginning of each document provides a history of how each Section has evolved over time, with links to consultation and decision documentation.
You can find each Development Version of the SEC Sections under the documents section on this page.
Please note, these documents are provided for reference only as the content in these Development Versions may differ from what is formally designated.
Test Approach Documents
Below is a table of Test Approach Documents that have been approved by the Secretary of State for Releases 2 and 3 pursuant to the processes set out in the SEC Variation Testing Approach Document (SVTAD) and the SVTAD for SMETS1 Services respectively. These documents are not formal SEC Appendices but they do, however, confer rights and obligations on SEC Parties and so form part of the SEC contract.
|Document Name||Date Approved||Document Link|
|System Integration Test Approach Document Release 2||22nd February 2018||Release 2 System Integration Test Approach Document|
|Device Integration Test Approach Document Release 2 v1.2||5th June 2018||Release 2 Device Integration Testing Approach Document v1.2|
|User integration Test Approach Document Release 2 v1.2||5th June 2018||Release 2 User Integration Testing Approach Document v1.2|
|User Testing Services Apporach Document for SMETS1 Services||13th March 2019||User Testing Services Apporach Document for SMETS1 Services|
|Migration Testing Approach Document for SMETS1 Services||4th November 2019||Migration Testing Approach Document for SMETS1 Services 1.2|
|System Capacity Testing Approach Document v1.0||3rd July 2019||System Capacity Testing Approach Document v1.0|
SEC Documents for DCC SMETS1 Services Release (Release 3)
Provided below is a table of SEC documents that have been baselined to support this Release. Content that had previously been baselined for this Release has now been included in Release 2 documents.
|SEC Document name||Date Baselined||Baselining |
|SEC Appendix B - Organisation Certificate Policy v1.2 draft||21st February 2018||TBDG||SEC Appendix B - Organisation Certificate Policy v1.2 draft|
|SEC Appendix E - UISS v1.2 draft||20th February 2019||TBDG||SEC Appendix E - UISS v1.2 draft|
|SEC Appendix I - CH Installation and Maintenance Support Materials v1.3 draft||19th December 2018||TBDG||SEC Appendix I - CH Installation and Maintenance Support Materials v1.3 draft|
|SEC Appendix M - SMKI Interface Design Specification v1.2 draft||21st February 2018||TBDG||SEC Appendix M - SMKI Interface Design Specification v1.2 draft|
|SEC Appendix Z - CPL Requirements Document v1.1 draft||27th February 2018||TBDG||SEC Appendix Z - CPL Requirements Document v1.1 draft 2|
|SEC Appendix AB - Service Request Processing Document v1.2 draft 3||20th February 2019||TBDG||SEC Appendix AB - Service Request Processing Document v1.2 draft 3|
|SEC Appendix AC - IEDP v1.4 draft||20th February 2019||TBDG||SEC Appendix AC - IEDP v1.4 draft|
|SEC Appendix AD - DCC User Interface Specification v3.0 draft 3||19th December 2018||TBDG||SEC Appendix AD - DCC User Interface Specification v3.0 draft 3|
|SEC Appendix AF - Message Mapping Catalogue v3.0 draft 2||18th October 2018||TBDG||SEC Appendix AF - Message Mapping Catalogue v3.0 draft 2|
|SEC Appendix AG - Incident Management Policy v1.2 draft||20th June 2018||TBDG||SEC Appendix AG - Incident Management Policy v1.2 draft|
|SEC Appendix AH - Self Service Interface Design Specification v1.2 draft||20th June 2018||TBDG||SEC Appendix AH - Self Service Interface Design Specification v1.2 draft|
|SMETS1 Testing Baseline Requirements Document v1.8||4th November 2019||TBRD||SMETS1 Testing Baseline Requirements Document_v1.8|
SEC Documents for DCC November 2019 Release
Provided below is a table of documents published to support the implementation for the DCC November 2019 Release.
|SEC Document name||Date Baselined||Document Link|
|Schedule 8 - GB Companion Specification (GBCS) V2.1 - V3.2 mark-up||21 June 2019||GBCS v2.1 - v3.2 designated changes|
|Schedule 9 - Smart Metering Equipment Technical |
Specification (SMETS) V3.1 - V4.2 mark-up
|10 June 2019||SMETS v3.1 - v4.2 designated changes|
|Schedule 10 -|
Communication Hubs Technical Specification (CHTS) V1.1 - V1.3 mark-up
|10 June 2019||CHTS v1.1 - v1.3 designated changes|
|Appendix AF - Message Mapping Catalogue Version 3.1 Draft 2||10 June 2019||MMC v3.1 Draft 2|
|Appendix AD - DCC User Interface Specification Version 3.1 Draft 5||28 July 2019||DUIS v3.1 Draft 5|
Note: Please refer to the SEC Schedule 11 – TS Applicability Tables for current applicability. The GBCS, SMETS, and CHTS documents in table above are intended as guidance for their latest designations on 4 July 2019 for implementation in the November SEC Release. They contain all mark-up of changes since the last active version up to this latest designation.
SEC Release Notes
The Release Notes in the Table below have been issued by BEIS to help SEC Parties interpret the SEC documents they relate to.
|Document name||Document Link|
|Release Note SMETS V3.0||Release Note SMETS V3.0|
|Release Note SMETS V3.1||Release Note SMETS V3.1|
|Release Note CHTS V1.1||Release Note CHTS V1.1|
|Release Note GBCS V2.0||Release Note GBCS V2.0|
|Release Note DUIS V2.0||Release Note DUIS V2.0|
|Release Note MMC V2.0||Release Note MMC V2.0|
|Release Note UISS V1.1||Release Note UISS V1.1|
|Release Note SRPD V1.1||Release Note SRPD V1.1|
|Release Note GBCS V2.1||Release Note GBCS V2.1|
|Release Note GBCS V3.1||Release Note GBCS V3.1|
|Release Note GBCS V3.0||Release Note GBCS V3.0|
|Release Note SMETS V4.0||Release Note SMETS V4.0|
|Release Note SMETS V4.1||Release Note SMETS v4.1|
|Release Note SMETS V4.2 Draft 1||Release Note SMETS v4.2 Draft 1|
|Release Note SMETS V4.2 Draft 2||Release Note SMETS v4.2 Draft 2|
|Release Note DUIS V3.1 Draft 4||Release Note DUIS v3.1 Draft 4|
|Release Note MMC V3.1 Draft 2||Release Note MMC v3.1 Draft 2|
|Release Note GBCS V3.2 Draft 2||Release Note GBCS v3.2 Draft 2|
|Release Note GBCS V3.2 Draft 3||Release Note GBCS v3.2 Draft 3|
|Release Note GBCS V3.2 Draft 4||Release Note GBCS v3.2 Draft 4|
|Release Note CHTS V1.3 Draft 1||Release Note CHTS v1.3 Draft 1|
|Release Note DUIS V3.1 Draft 5||Release Note DUIS v3.1 Draft 5|
Testing Issue Resolution Process
This document explains how Testing Issue are identified, undergo triage and are resolved in and efficient and timely manner. This includes the process for referring Testing Issues where the Testing Participant disagrees with the outcome of the issue resolution process. The Testing Issue Resolution Process requirement is defined in the Smart Energy Code (SEC) Section H14.37.
Testing Related Appeals During Transition
This document explains the circumstances in which the Secretary of State (or such other persons as the Secretary of State directs) will consider appeals and referrals from SEC Parties and others relating to certain testing matters during transition.
Non GBCS Non Mandated Alerts (NGNM)
Device Alerts are unsolicited messages sent by Devices to DCC Users e.g. the Supplier. GBCS defines the structure of the Alerts and contains a listing of Alerts, distinguishing between mandated and non-mandated Alerts.
GBCS Parse software allows any new non-mandated alerts of the right format (as specified by GBCS) sent by Devices to be passed to the DCC User. These new non-mandated Alerts are captured temporarily in the below ‘Non-GBCS-Non-Mandated-Alerts-Register’ until they are adopted by the SEC:Non GBCS Non Mandated Alerts Register
Suppliers and manufacturers have a general (but non regulatory) responsibility to ensure all Alerts supported by their Devices beyond those specified in the SEC are captured in the ‘Non-GBCS-Non-Mandated-Alerts-Register’ until they are adopted by the SEC.
The form and process to raise a new NGNM Alert Code can be accessed using the below Excel Workbook:Non GBCS Non Mandated Alert Form