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SEC v62.0 released to implement MP200

An updated version of the SEC came into effect on 18 July 2022 to implement MP200 ‘Faster Switching consequential changes to the SEC’.

MP200 is an Authority-Led Variation implemented as part of Ofgem’s Faster Switching Programme. Several SEC Sections and Appendices have been amended in order to facilitate the go-live of the Centralised Switching Service (CSS). These changes have been deemed as consequential changes that have minor, if any, impacts on SEC Parties.

By implementing the consequential changes to the SEC and to other industry Codes, consumers will be able to realise the benefits from Ofgem’s Faster Switching Programme.


What parts of the SEC were affected?

The following parts of the SEC were affected:

  • SEC Section A ‘Definitions and Interpretation’
  • SEC Section E ‘Registration Data’
  • Section G ‘Security’
  • Section H ‘DCC Services’
  • Section K ‘Charging Methodology’
  • Section L ‘Smart Metering Key Infrastructure and DCC Key Infrastructure’
  • Section P ‘Production Proving’
  • Appendix X ‘Registration Data Interface Specification’
  • Appendix Y ‘Registration Data Interface Code of Connection’
  • Appendix AG ‘Incident Management Policy’
  • Appendix AL ‘SMETS1 Transition and Migration Approach Document’


Where can I access the redlining?

The redlined changes can be found on CodeWorks via the links below:


Our Document Log lists the versions of each SEC document now in effect following this release.

You can download the individual SEC documents from the SEC and Supporting Documents section of our website or via CodeWorks.


Where can I find further information?

Further information can be found on the MP200 page of our website. If you have any questions, you can call the SECAS Helpdesk at 020 7090 7755 or email

Consequential changes of the Ofgem Switching Programme on the SEC

8 August 2019

Ofgem’s Switching Programme is introducing new arrangements for the faster switching of customers. The rules and obligations for switching will be contained in the Retail Energy Code (REC) which will see the creation of the Centralised Switching Service (CSS) to process switching information.

These new arrangements will have an impact on the Smart Energy Code (SEC).


How can I find more information?

We’ve published a web-page providing more information on the consequential changes to the SEC, as well as the proposed draft redlining here.

SECAS encourage any interested Parties to provide us with their comments, thoughts or concerns by 28 August 2019 so we can help address them before the autumn consultation is issued. Please contact us by email at or by calling 020 7090 7755.

Publication of BEIS CAD testing and pairing document

4 October 2018

The smart metering roll-out in Great Britain will create an unprecedented new platform for innovation in energy data.

The Government’s vision is for data not only to be accessed remotely via the Data Communications Company (DCC) but also that consumers can access data from their smart meter locally via devices, known as Consumer Access Devices (CAD), connected to the Home Area Network (HAN).

The document below provides a set of principles aimed at clarifying the roles and responsibilities of the different relevant parties in the testing and pairing of CADs. It is focused on pairing CADs with SMETS1 meters, where certain industry parties were keen to have further guidance.

They are a suggestion, based on discussion with industry, of how industry processes could be executed. Parties are encouraged to use these principles as a starting point for defining their own processes and for developing industry good practice.

This note is intended to support energy suppliers, CAD providers, smart meter system operators (SMSOs) and meter manufacturers. It is relevant for both enrolled and unenrolled SMETS1 systems.

Publication of BEIS CAD testing and pairing document