Market-Wide Half Hourly Settlement
MHHS Category 3 Document Updates

Whilst Category 1 and 2 REC Documents have been developed under the Codes workstream of the MHHS Programme, Category 3 Documents are out of scope of the MHHS Code Drafting being delivered via R0209 - Implementation of MHHS Arrangements and R0241 - MHHS Incremental Changes for go live.


Category 3 changes are being delivered directly through the REC MHHS project and are being developed under a REC-owned plan. The following table sets out the documents that have been approved for implementation:

Document

Implementation

Related documentation

Entry Assessment Forms 11 October 2024 C3-0103
Entry Assessment Pack 11 October 2024 C3-0104
Technical Expert Panel Terms of Reference 11 October 2024 C3-0102
Performance Assurance Operating Plan 30 August 2024 C3-0095
Guidance on Electricity Metering Points - MHHS Approved for MHHS Milestone M8, 'Code changes delivered'

RECMEP_24_0911_06_01 - Guidance on Electricity Metering Points

C3-0137

REC Service User Categorisation 23 August 2024 C3-0093
Meter Configuration Tables (New) Approved for MHHS Milestone 8, 'Code changes delivered' C3-0089
Electricity Data Access Matrix Approved for MHHS Milestone 8, 'Code changes delivered'

EES Data Access Consolidated Consultation Responses 12.02.2025 PUBLIC

C3-0138

EES User Guides:

EES User Guide - Distributor v4.0

EES User Guide - Non-Domestic Consumer v4.0

EES User Guide - Supplier v4.0

EES User Guide - Metering Service & Supplier Agent

EES User Guide - Third Party v4.0

EES User Guide - TPI v2.0

Secure Data Exchange Portal (SDEP) User Guide v5.0

Approved for MHHS Milestone 8, 'Code changes delivered'

EES User Guides - MHHS Update Cover Note

C3-0139

Sharing Metering Asset Data - MHHS Guidance v1.0 Approved for MHHS Milestone 8, 'Code changes delivered'

MHHS Metering Guidance Consolidated Consultation Responses v1.0

C3-0136

Change of Market Segment - MHHS Guidance Document v1.0 Approved for MHHS Milestone 8, 'Code changes delivered'

MHHS Metering Guidance Consolidated Consultation Responses v1.0

C3-0136

MOA Appointment - MHHS Guidance v1.0 Approved for MHHS Milestone 8, 'Code changes delivered'

MHHS MOA Appointment Guidance Consolidated Consultation Responses 1.0

C3-0136

The following documents are also being reviewed and updates are expected, although the date is not confirmed:

  • REC & BSC Joint Storyboards
  • CSS External Testing Scenarios
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