MOSL Roadmap actions
MOSL has four actions (M1-M4) allocated to it in the Strategic Panel's Roadmap to a Flourishing Market. Find out how MOSL is progressing with these below.
Each action is assigned a red, amber or green (RAG) status depending on its progress. The definition of the RAG status is as follows:
- Green – on schedule, no concerns OR delivered and under review
- Amber – flagged because an issue has been encountered that may or may not delay the completion of the action
- Red - delay or issue identified that is preventing delivery to schedule
| Action | Latest update | End date | Status |
|---|---|---|---|
|
M1. A reformed MPF appropriately incentivises wholesaler and retailer performance An effective Market Performance Framework (MPF) is in place which incentivises retailers and wholesalers to deliver positive customer outcomes and encourages them to take corrective measures to rectify poor performance |
October 2025: The reformed Market Performance Framework (MPF) is preparing for the launch of five new KPIs on 1 December 2025, following Ofwat’s consultation and decision due on 17 November. The framework’s shadow operations are ongoing, and the new measures will focus on cyclic and transfer meter reads for both smart and traditional meters. These KPIs aim to incentivise accurate billing, improve settlement accuracy and support better customer outcomes through stronger data and performance monitoring. Alongside these KPIs, additional metrics and market indicators will be introduced between November 2025 and March 2026 to provide wider market health insights.
August 2025: The Code Change Committee unanimously recommended the final MPF code changes to Ofwat for approval. The code change includes five KPIs for the new MPF- three relating to cyclic meter reads and two relating to transfer meter reads. It also includes a number of non-KPI provisions, including the ability for the Performance Assurance Committee to adjust KPI performance standards by +/- five percentage points in a given 12-month period.
June 2025: Three metrics related to wholesaler performance went live on 1 April - M12- Premises and address accuracy, M18- Bilateral SLA performance and M15- Bilateral SLA lateness. On 23 June the performance reports for transfer reads (M04, M06 and M09) were released to trading parties. In mid-July the data on cyclic reads (M01, M02 M19) will be released. Key outcomes from consultation 5 included one (of three) proposed transfer meter read KPI changing to an additional metric. |
31 March 2026 |
On schedule |
|
M2. Basic Query tool on Open Water website Customers should be able to identify their retailers on the Open Water website |
October 2025: The CATRID query tool has been completed by MOSL. Discussions are ongoing to confirm whether the CATRID tool will be presented on the Open Water website or elsewhere. This decision is dependent on the update from Ofwat as referenced in the October update to O1 - Open Water Website.
August 2025: Ofwat has request that CATRID is not hosted on the Open Water website. MOSL will look for alternative locations for hosting CATRID, such as a standalone website, or a page on MOSL's website.
June 2025: MOSL expects to deliver the Customer Access to Retailer ID (CATRID) tool on the Open Water Website in August 2025. This action is flagged while the assigned resource confirms the successful delivery of the MPF metrics referenced in action M1. |
31 March 2026 |
Flagged |
|
M3. Create a data model for consumption benchmarking by market segment MOSL will establish the minimum standards by which customer consumption data is provided by retailers so a single source of truth for each segment and their associated consumption exists and can be compared against. This will allow the market to formally benchmark and monitor consumption. |
October 2025: MOSL’s Strategic Data Programme (SDP) is developing a data model for consumption benchmarking by market segment. It is improving the quality of premises, address and customer data in CMOS to support more accurate analysis. Recent sessions with wholesalers, retailers, NAVs and data partner IDenteq focused on standardising how non-addressable premises such as troughs, allotments and public fountains are recorded. Common classifications and data standards will improve consistency and comparability across segments.
August 2025: No change from June update.
June 2025: In the short term, MOSL is assessing the current state of customer data segmentation in the Central Market Operating System (CMOS), including the existence and accuracy of Standard Industrial Classification (SIC) codes. There will need to be a re-evaluation of whether SIC codes are the right classification system for the market, and if so, which variant should be used, how to manage inconsistencies (e.g. different SIC versions by year), and whether to propose new or custom codes. This work sits within the Strategic Data Programme and is currently scheduled for 2026. Learnings from water efficiency dashboard data already enriched with segmentation data will support this. |
31 March 2029 |
On schedule |
|
M4. Develop a smart settlement process MOSL to develop smart settlement so the capabilities of smart meters allow for supply side tariffs which are harmonised across regions and unlock opportunities for load shifting and demand side solutions to enable smarter use of water. MOSL will support this with a settlement sandbox in which wholesaler retailer pairings can explore the outcomes delivered by smart settlement. |
October 2025: Work to develop a new settlement strategy is progressing, as detailed in the September 2025 Market Focus. MOSL launched a consultation on proposals for the strategy, running from 22 September to 10 October, giving trading parties the opportunity to help shape the future of settlement in the business retail market. The proposed strategy explores six key themes, including the potential for faster settlement runs, greater accuracy, and self-service capabilities, as well as how smarter data could enable tariff innovation and water efficiency incentives.
August 2025: MOSL presented the Smart Settlement Strategy to the Strategic Panel at SP19a. MOSL will present this at the in person User Forum in October.
June 2025: Further to the Settlement Strategy Position Paper outlined in the May 2025 update, MOSL is seeking market feedback and has formed a working group to develop the strategy. The first meeting of the Settlement Working Group is in early July and includes representation from Anglian Water, Business Stream, Castle Water, Pennon Water, United Utilities, Waterplus, Waterscan, Water2business, Wessex Water, Wave and Yorkshire Water. This will be presented to the Panel at their September meeting. |
31 March 2030 |
On schedule |
The table above includes the most recent three updates for each action. If you would like to view a full list of past updates please contact panel.secretariat@mosl.co.uk. For more information on how other stakeholders are progressing with their actions, please follow the links below.