CPM058 & CPW149
Market Performance Framework Reform
Summary of this change
CPM058 & CPW149: This change seeks to implement the code changes required to reform the Market Performance Framework (MPF). The aim of the reform is to ensure it is simple, flexible, effective and powerful in application and provides customers and Trading Parties with confidence in the market at a reasonable cost. This code change was delivered in three parts:
(a) 'Governance' was implemented between 26 June and 21 November 2024.
(b) 'Non-Financial Tools' was implemented on 21 November 2024.
(c) 'Cyclical and Transfer Reads KPIs' was implemented on 1 December 2025.
The remaining elements of the MPF reform do not require code changes. Code change completion was confirmed to the Code Change Committee at its December 2025 meeting.
| Title | Published |
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| CPM058 & CPW149 Change Proposal Form | 19/12/2023 |
| CPM058 & CPW149 Change Plan | 08/01/2024 |
| CPM058 & CPW149 Acceptance Decision | 16/01/2024 |
| CPM058 & CPW149 Revised Change Plan | 04/11/2024 |
| CPM058 & CPW149 Revised Change Plan May 2025 | 07/05/2025 |
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| CPM058a & CPW149a Draft Recommendation Report | 04/04/2024 |
| CPM058a & CPW149a Final Recommendation Report | 25/04/2024 |
| CPM058b & CPW149b Draft Recommendation Report | 09/05/2024 |
| CPM058b & CPW149b Final Recommendation Report | 22/05/2024 |
| CPM058 & CPW149c Draft Recommendation Report | 05/08/2025 |
| CPM058 & CPW149c Final Recommendation Report | 22/08/2025 |
| CPM058 & CPW149 MPF Reform - Change to Delivery Plan | 08/12/2025 |
| Title | Published |
|---|---|
| CPM058a & CPW149a Decision | 23/05/2024 |
| CPM058 & CPW149 (b) Ofwat Decision | 13/08/2024 |
| Strategic Panel letter to MOSL | 20/11/2024 |
| CPM058c and CPW149c Ofwat Minded to Decision | 10/09/2025 |
| CPM058c and CPW149c Ofwat Final Decision | 20/11/2025 |