Elexon has launched BSC Issue 123: MHHS Asset Metering Review and is seeking industry participants to join the Issue Group. The review will examine how Asset Metering arrangements should operate under the Market-wide Half-Hourly Settlement (MHHS) framework, ahead of key implementation milestones.
The Issue will consider whether existing Asset Metering roles, including HHDC, MOA and AMHHDC, remain appropriate under MHHS arrangements or whether they should be retained, extended, restructured or replaced. It will also assess whether Asset Metering data exchanges should migrate from the Data Transfer Network (DTN) to the Data Integration Platform (DIP), reflecting preferences previously identified by MHHS industry experts.
In addition, the review will address known process gaps relating to the Loss of MSID Pair Allocation and Loss of AMSID Pair Allocation arrangements, including the development of a clearer escalation route where parties are unable to reach agreement. The Issue Group will also assess impacts on existing BSC arrangements, qualification requirements, industry systems and participating organisations.
For AMO members, this review is particularly significant as it has the potential to reshape Asset Metering governance, associated market roles, industry data flows and operational responsibilities under MHHS. The outputs may ultimately lead to BSC Modifications, Change Proposals and wider industry changes affecting meter operators and other market participants.
Elexon expects the first Issue Group meeting to be held in early September 2026 and is encouraging interested stakeholders to participate. AMO members with an interest in Asset Metering, MHHS implementation, market roles or industry data exchange arrangements may wish to consider joining the Issue Group or subscribing to the workgroup mailing list to help influence the future design of these arrangements.