Panel & Ofgem Approved Code Artefacts

Transition to M8 Code Change Workstream

Please note that these Code Artefacts are now superseded by the Code Artefacts under individual Code Body governance.

Please refer to the Code Artefact text under the Code Body Ofgem Significant Code Review (SCR) page or contact the respective Code Body directly for the latest version.

For copies of the approved MHHS Code Artefacts, please visit the Code page of this website.

The following Code Panels have approved the MHHS Code drafting under their respective Significant Code Review (SCR) Modifications:

Balancing & Settlement Code (BSC)
Retail Energy Code (REC)
Distribution Connection and Use of System Agreement (DCUSA)

On 26 November 2024, Ofgem approved these Modifications, meeting Milestone 7 (M7) and you can read more about the decisions via the links below:

These Code Artefacts will take effect at Milestone 8 (M8) in September 2025.

You can find the relevant SCR Modification pages via the following links:

P478: Implementation of MHHS Arrangements

Contact: bsc.change@elexon.co.uk

R0209: Implementation of MHHS Arrangements

Contact: enquiries@recmanager.co.uk

DCP445: Implementation of MHHS Arrangements

Contact: dcusa@electralink.co.uk

Copies of the Panel approved MHHS Code Artefacts are available in the respective libraries below for completeness.

The master versions of these Code Artefacts are now owned and maintained by the respective Codes, and any queries or comments should be addressed to the respective Code mailbox/helpdesk.

Energy Market Data Specification (EMDS)

Included in these Modifications was EMDS vMHHS 1.1 which was based on MHHS Design Interim Release (IR) 8.1.

You can view this document in the Approved Cross-Code Data Specification library below.