Issue 114 Settlement of ABSVD for ancillary services delivered through independent aggregators

Applicable Balancing Services Volume Data (ABSVD) is provided by NGESO to Settlement, in order to ensure that Lead Parties’ Energy Imbalance positions are adjusted to reflect ancillary services that the assets within their BM Units provide to NGESO. The original ABSVD process (introduced by Modification Proposal P71) was intended to work with BM Units for which the Lead Party was both Balance Responsible Party (BRP, liable for Energy Imbalance) and Balancing Service Provider (BSP, providing ancillary services to NGESO). But, more recently, Modifications P344 and P354 have provided mechanisms for NGESO to submit ABSVD where the customer’s BSP (an independent aggregator) is different to their BRP (the electricity supplier).

Experience of operating these processes has revealed a number of issues that were either not considered or not resolved during the P344 and P354 processes, as described below. Elexon believe it would be helpful for an Issue Workgroup to examine these Issues, including any potential impacts on demand flexibility services (both turn-up and turn-down) and participation of domestic customers.

The details on these seven Issues and their Proposed Solutions are listed in the Proposal Form. 

The first meeting of Issue Group was held on 10 September 2024. The second meeting is expected to take place in October 2024. 

 Workgroup sign-ups can be found here: Modification and Issue workgroup sign-up – Elexon BSC