Review of the Performance Assurance Framework

ELEXON is currently undertaking a review of the Performance Assurance Framework. This page tells you about the review and provides the latest update on progress.

Latest news

Risk Evaluation Register Consultation

The 2019/20 Risk Evaluation Register is now public for industry consultation. Please submit any comments to by 21 December 2018.

Review of the PATs workstream

The first working group for this workstream took place on 30 November 2018. The working group discussed the key ideas for change to the audit techniques, and identified some additional potential improvements. If you would like to attend subsequent working groups for the PAT Review workstream, please email

PAF Procedures workstream

This workstream has reached its conclusion following a final set of teleconferences held with Issue 69 group members on 30 and 31 August 2018. During the course of the workstream, the Issue 69 workgroup discussed:

  • How risk areas should be identified
  • How these risks should be evaluated, including the workgroup’s endorsement of a new measurement approach
  • How ELEXON could achieve greater engagement with PAF stakeholders
  • How the identified risks should be evaluated in the future
  • Some examples of the proposed PAF design in use

Following these discussions, a number of revisions to the PAF Procedures were presented to PAB and approved on 27 September 2018.

Data Provision workstream

The first workgroup for this worksteam took place on 3 October 2018. The working group discussed the advantages and disadvantages of the current data sources, and discussed the viability of a number of new data source. If you are interested in attending subsequent meetings, contact

Coming soon

Data Provision workstream

The next Issue 69 workgroup for the Data Provision workstream will take place in the new year. If you are interested in attending, please email

Key aims of the review

  • Better engagement with parties about issues that do and don’t matter to them (their risk appetite)
  • Increase the quantity and quality of participation in consultations
  • Meet the current and future assurance needs of the Panel, the PAB and the wider electricity industry e.g. smart metering, alternative business models, CVA risk
  • Improve the measurability of Settlement error and the mitigating effect of assurance activities
  • Deliver a valued and trusted assurance service to BSC Parties under the strategic and tactical guidance of the BSC Panel and PAB

The review is projected to run to Q2 2020.


A core ELEXON team, supported by risk management and data experts, will deliver the review in four workstreams. Industry experts signed up to the Issue 69 working group will be called upon to review and comment on key approaches and proposals.

The PAB will be the primary decision making body, and will receive regular updates on the project’s progress.

The four workstreams will culminate in a revised framework, a new set of risks with estimated error, a refreshed set of mitigating techniques and improved reporting. This proposed framework will be implemented via the BSC Change process where required, after PAB and Panel approval.  Any improvements that can be made sooner will be progressed as necessary.

Work stream 1 – Smart Metering Rollout

To provide immediate assurance against the challenges of the smart metering rollout by developing Proof of Concepts to enable the effective monitoring of significant Settlement Risks associated with the rollout.

This workstream has now completed.  We identified a set of related Settlement Risks; we developed a report on the production and submission of Meter Technical Details (MTDs); we held an industry day; and we handed over management of the risks to the operational teams.

Work stream 2 – PAF Procedures

To deliver recommendations to improve the operability and effectiveness of the REM and other PAF procedures that ensure that risks are more meaningful and reflective to participants.

Work stream 3 – Review of the PATs

This workstream will assess, in light of feedback received on the PAF, if there are any gaps in the current set of mitigating assurance techniques (using the new Risk Evaluation Methodology and risk register to identify gaps in risk mitigation), which techniques are cost effective for the level of risk they mitigate, and which techniques are not.

It will then produce a set of recommendations for retaining, altering, adding or removing techniques.

This workstream will also consider the general working practices that ELEXON and the PAB adopt in relation to coordinating and applying the techniques.

Work stream 4 – Data Provision

To create Proofs of Concept to test the viability of alternative methods of data provision that place less burden on participants to provide data and that supports more accurate risk appraisal.

As well as this webpage, we will use Newscast and the OSMs to provide key information and how you can get involved. The Issue 69 webpage holds documents related to that group’s work.

We will also be attending BSC and external forums to present on the objectives and activities of the review. If you would like us to present to your forum, please email us at

What is the Framework?

Around £1.7bn in transactions went through the BSC Settlement systems in 2016/17. BSC Parties require an assurance framework that allows them to have confidence in the accuracy of the allocations of energy and charges.

The current approach to the Performance Assurance Framework (PAF) was introduced in 2007 under Modification P207.

With 16 assurance techniques, over 200 identified Settlement Risks, an annual central cost of around £3m, and impacts on all BSC Parties (plus their agents and BSC Agents/systems), the PAF must be delivered in an effective and efficient way.

Why review the PAF?

After 10 years of live operations, and some significant industry changes such as smart metering and innovative business models, the BSC Panel considered the PAF should be reviewed and included it in its strategic forward work plan 2016/17.

ELEXON initiated a project and the Panel approved the preliminary scope and approach at Panel 255 in July 2016.

ELEXON then engaged with a broad spectrum of stakeholders to validate the scope and approach for the design phase of the review. The Performance Assurance Board (PAB) endorsed these proposals and Panel approval was gained in March 2017 (PAB 264/07 – PAF Review Scope and Approach Approval).


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