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The Smart Energy Code (SEC) was designated on 23rd September 2013 following the granting of the DCC Licence. The current version in force (SEC 4.2) came into effect on 18th March 2015.
DECC will be implementing further versions of the SEC being developed under the Smart Metering Implementation Programme (SMIP). Further information on the SMIP can be found here.

Below is a table that outlines the versions of the SEC and the likely timetable for implementation. Annex 2 to the SEC 4 consultation document outlines the planned further changes to the SEC at the time of publication.

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 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 Variation to the SEC page on the Website.

Current Version



SEC 4.2

Effective 18th March 2015

The SEC 4.2 designation has introduced a new Section B sub-section: Section B2: DCC, User and RDP Identifiers 

The SEC 4.2 designation has also amended Sections B1, F5, H14, M3, T6 and Appendix C.

The SEC 4.2 changes follow the larger release of SEC4.0 on 14th January 2015. Guidance on what was included in SEC 4.0 is provided, covering specific areas of interest.

Note – not all of these new and existing provisions are active or in full force.

Sections F5, H, L3, L5, L7, Appendix D and Appendix E are currently inactive in accordance with the provisions in Section X.


Click here for SEC 4.0 Guidance

Communications Hub Guidance

Security Guidance

Future versions

Content and Further Information



New Smart Energy Code content: January 2015 consultation

Consultation published 26th January 2015

On 26th January 2015, the Government published a new consultation. The consultation sets out proposals and provides associated draft legal text on the following areas:

  • Notifying new commencement dates for SEC testing phases
  • Informal testing
  • Changes to the timings of when Communication Hubs can be ordered
  • DCC Key Infrastructure Policy Management Authority (DCCKI PMA)
  • Minor consequential change to the electricity and gas supply licence conditions
January 2015 consultation

Consultation on additional SEC content  

Consultation Published: 17th November 2014

The SEC Stage 4 (Part A) Government response includes additional content for consultation that has arisen from SEC 4 consultation responses or as a consequence of the development of SEC Subsidiary Documents by the DCC.

The consultation closed on 31st  December 2014, and sought views on a number of areas, including: 

  • Additional Public Key Infrastructures and SMKI related changes
  • Security Related requirements & Post-Commissioning Obligations legal drafting
  • Movement of some Technical Arrangements into Subsidiary Documents and Providing for Some SEC Milestones to be Turned into Dates
  • Test Services to Support System Providers and Shared Systems
  • Possible DCC Gateway Connection Requirements for Remote Testing

Consultation on additional SEC content

Further changes to the SEC

Annex 2 in the SEC 4 consultation sets out anticipated further changes to the SEC, including:

  • Non-Domestic Opt Out
  • Enrolment of ADM Meters
  • Migration of Registration to DCC
  • Transitional Requirements
  • WAN Coverage
  • SMKI and Liabilities

SEC Stage 4 consultation

Previous Versions




Effective from: 27th September 2013

Designation Version – initial provisions for establishment of SEC Governance and Charging Methodology.



Effective from: 31st March 2014

SEC Stage 2 amendments to SEC sections already in force.


SEC 2.1

Effective from: 6th April 2014

SEC Stage 2 new provisions on Parse and Correlate (Section H11) and Intimate Communication Hub Interface Specification (ICHIS) (Section H12).

Note - these provisions are not active as Section H is currently switched off in accordance with the provisions in Section X.

SEC 2.1


SEC 2.2

Effective from: 27th May 2014

Fast-Track Modification Proposal (SECMP 0001) amendments to replace instances of the abolished National Consumer Council with Citizens Advice and Citizens Advice Scotland. SEC 2.2

SEC 3.0

Effective from: 31st July 2014

SEC Stage 3 designated changes introduced new provisions on Smart Metering System Requirements (Section F), Testing Services (Section H14), Smart Metering Key Infrastructure (Section L), Testing during Transition (Section T) and SMKI Appendices A, B and C.

Amendments were made to existing sections already in force.

SEC 3.0

Click here for SEC 3.0 Guidance

SEC 4.0

Effective 14th January 2015


The designation of the SEC 4A consultation response outcomes introduced new provisions on: Communications Hubs (Section F5), Security Governance (Section G) and Privacy (Section I2) requirements and SMETS1 meters (Section N).

The SEC 4.0 designation also amended the existing sections A, D, E, H, I, J K, M, T, X and Schedules 2, 3 and 5.

Note – not all of these new and existing provisions are active or in full force.

Sections F5, H, L3, L5, L7, Appendix D and Appendix E are currently inactive (with the exception of H15) in accordance with the provisions in Section X.

SEC 4.0
 SEC 4.1

Effective 26th January 2015

The SEC 4.1 designation has introduced a new Appendix G: DCC Gateway Connection Code of Connection.

The SEC 4.1 designation has also amended sections A, E and H15.

In addition to the changes that the SEC 4.1 designation has made, Section H15 is now active.

You can also find a comparison of the designated SEC4.0/4.1 content against SEC3.0.


Comparison of designated SEC4.0 and 4.1 content against SEC3.0

Contact Us

Do you have a question on any of the published SEC versions?

Our team is happy to help, please contact the SECAS Helpdesk at:


T: 020 7090 7755



SEC Sections

For ease of reference each SEC Section is provided below.

You can also find guidance on a number of Sections, with further guidance being added in due course.