P379 ‘Multiple Suppliers through Meter Splitting’

Formal title: Enabling consumers to buy and sell electricity from/to multiple providers through Meter Splitting

Current Status

Initial Written Assessment
Assessment Procedure
Report Phase
With Authority
Awaiting Implementation


This Modification will enable individual consumers to be supplied by multiple Trading Parties through a Balancing and Settlement Code (BSC) Settlement Meter at the Boundary Point. It will amend the market rules to support development of non-traditional business models and innovation, expanding upon the solution to be implemented by BSC Modification P344 ‘Project TERRE implementation into GB market arrangements’. It will achieve this through the creation of a new Party Agent role, the Customer Notification Agent (CNA), who would reconcile power flows through the Settlement Meter, enabling accurate allocation of volumes and costs, which in turn will allow Trading Parties to reflect these volumes in their bills and payments to consumers.

This Modification is Proposed by New Anglia Energy, a recent BSC entrant who will be an Exempt Supplier, but the principle behind it has support from a range of BSC Trading Parties including OVO Energy and Cooperative Energy, and non-BSC parties, including Powervault and Verv.


The P379 WG11 Meeting will be held on 8 January 2020. The purpose of the meeting is to finish reviewing the Business Requirements.

The last P379 Meeting (WG10) was held on 3 December 2019. The Workgroup discussed key areas of the P379 Business Requirements. ELEXON is in the process of futher developing the BR’s based on WG feedback. A further meeting  to finish reviewing the detailed BRs will be scheduled within the next few weeks.   

The P379 Interim Assessment Report was presented at the BSC Panel meeting on 13 June 2019. A copy of the Report can be found in the Documents section below. BSC Panel feedback will be provided at WG5.

P379 was raised on 3 January 2019, and the Initial Written Assessment (IWA) was presented to the BSC Panel at its meeting on 10 January 2019. The Panel progressed P379 to the Assessment Phase. The first Workgroup meeting for P379 was held on 27 February 2019. The group agreed the Terms of Reference and discussed views on the proposal.

All P379 Workgroup Material can be found at the below links

P379 Workgroup 1 – 27 February 2019

P379 Workgroup 2 – 3 April 2019

P379 Workgroup 3 – 18 April 2019

P379 Workgroup 4 – 21 May 2019

P379 Workgroup 5 – 27 June 2019

P379 Workgroup 6 – 23 July 2019

P379 Workgroup 7 – 24 July 2019

P379 Workgroup 8 – 13 August 2019

P379 Workgroup 9 – 24 September 2019

P379 Workgroup 10 – 3 December 2019

P379 Workgroup 11 – 8 January 2020

Next Events

The next P379 Workgroup meeting will be held on 8 January 2020.


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