P375 ‘Metering behind the Boundary Point’

Formal title: Settlement of Secondary BM Units using metering behind the site Boundary Point

Current Status

Initial Written Assessment
Assessment Procedure
Report Phase
With Authority
Awaiting Implementation


P375 proposes to settle Secondary Balancing Mechanism (BM) Units using metering equipment behind the defined Boundary Point for Balancing Services (known as ‘behind the Meter’), rather than settling using Metering Equipment at the Boundary Point as per current BSC obligations. This will allow balancing-related services on site to be separated from imbalance-related activities, more accurately reflecting the balancing-energy volumes provided by the Balancing Service Provider (BSP).

P375 is the Modification arising from related BSC Issue 70 ‘Settlement of Secondary BM Units using metering at the asset’.

Please note that this Modification will impact Virtual Lead Parties (VLPs), with VLP provisions scheduled to be implemented as part of BSC Modification P344 ‘Project TERRE’ on 28 February 2019 as part of the February 2019 BSC Release.


The third Workgroup (P375 only) was held on 16 May 2019.

The second Workgroup was held in conjunction with P376 on 18 March 2019.

The first Workgroup was held in conjunction with P376 on 25 January 2019.

The initial Written Assessment was presented to the Panel on 13 December 2018.

Flexitricity raised Modification P375 on 10 December 2018. 

Next Events

Where possible Workgroups will be combined with P376 to reduce the burden on participants.

The next Workgroup will be held at the beginning of July 2019.

Please contact bsc.change@elexon.co.uk if you would like to join the Workgroup.


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