Performance Assurance: Risk Evaluation Register


The Risk Evaluation Register (RER) sets out the Settlement Risks that have been identified and evaluated by reference to classes of Performance Assurance Party (PAP) rather than to a particular PAP. 

Diagram showing the Rist Evaluation Register stage of the Performance Assurance process

How it relates to you

Settlement Risks relating to Supplier Volume Allocation, Central Volume Allocation and Central Systems processes fall under the scope of the RER.

The RER explains the annual process of review whereby existing risks are amended and/or new risks included. 

A Settlement Risk is a risk of any failure or error in a process required under the BSC that may impact (or has impacted) Settlement. Settlement Risks are recorded on the Risk Evaluation Register (RER).

An example of a Settlement Risk description from the RER is:

“The risk that [the NHHDC does not enter valid Meter readings by the Final
Reconciliation (RF) Settlement Run] resulting in [old/default data entering

Elexon review the Risk Evaluation Register (RER) annually, as required in the Balancing and Settlement Code (BSC) section Z5.5.3.

Elexon use the approved Risk Evaluation Methodology (REM) to identify and evaluate the Settlement Risks.

The PAB consults with stakeholders on the Settlement Risks, before approving the register for use.

Associated documents

The RER ledger sets out the risks, and the significance of each risk on Settlement in relation to a specific Performance Assurance Operating Period (PAOP).

2021/2022 PAOP

2020/2021 PAOP

The RER Ledger 2020/2021 is no longer in use, although Elexon are keeping this available to facilitate the transition to the new RER 2021/2022.

List of SVA risks

List of CVA risks


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