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).