The Code Manager convened a Q&A session on 19 November to address two significant Retail Energy Code (REC) issues impacting Meter Asset Providers (MAPs) and potentially Meter Operator Agents (MOAs) as part of the Market-wide Half-Hourly Settlement (MHHS) programme. These issues have raised concerns across the industry due to their implications for billing accuracy, operational efficiency, and compliance.

Key Issues Discussed

• I0230 – J0049 Field Optionality
  The “Effective from Settlement Date” (J0049) within the D0303 flow has changed from mandatory to optional following MHHS design changes. This adjustment, while aligned with programme requirements, introduces a risk that MAPs may not receive critical data needed for accurate billing and meter-to-MPAN association. Without this information, MAPs could face challenges in determining which electricity supplier to invoice.

• I0261 – Export MPAN Confusion
  The growing adoption of microgeneration at domestic sites has led to the creation of Export MPANs, complicating installation flows. MAPs must now manually verify whether a D0303 flow is corrective or ignorable, increasing workload and the potential for errors. This issue is expected to escalate as more households adopt renewable technologies.

Proposed Temporary Solutions

Due to dependencies on MHHS, immediate resolution is not feasible. The Code Manager outlined four temporary solutions leveraging the Electricity Enquiry Service (EES):

1. EES API Access for MAPs

   • Pros: Flexible, already available, addresses both issues without REC change.
   • Cons: High query volumes could impact API stability and performance.

2. Regular Portfolio Extracts from EES

   • Pros: No API impact, uniform delivery, supports invoicing.
   • Cons: Monthly frequency only, requires development and cost assessment.

3. Portfolio Extracts for MHHS Metering Points Only

   • Pros: No API impact, suitable for I0230.
   • Cons: Does not resolve I0261, monthly frequency, development needed.

4. Update D0303 to Add Export Flag

   • Pros: Provides an enduring fix for I0261.
   • Cons: Must be combined with another solution for I0230, may require future updates.

Highlights from the Q&A

• Access to EES API: MAPs can apply via the REC Portal under Organisation Management. Approval typically takes around three months, subject to completion of information security and GDPR compliance checks.
• GDPR and Data Protection: Concerns were raised about data privacy and API performance. The Code Manager confirmed that EES adheres to GDPR standards similar to ECOES, and tailored risk assessments are required due to differences in data scope and usage.
• Industry Impact: Attendees emphasised the need for enduring solutions and further engagement, noting that MHHS changes clearly affect MAP operations despite initial assumptions to the contrary.

Next Steps

• The Q&A outcomes will be published on the REC Portal by 26 November 2025.
• The Information Request remains open until 23:59 on 5 December 2025.
• Following this, the Code Manager will review responses and consult with issue proposers to determine the most viable path forward.

REC code manager has also produced podcast episode is regarding these changes. In this episode Caroline Freimuller explores how I0230  and I0261 are progressing through the REC Change Process, and how REC Parties can engage with the Code Manager as part of a collaborative solution development approach for these Issues. https://lnkd.in/ehGmHXKb

This session underscores the complexity of implementing MHHS changes and the importance of collaborative problem-solving across the energy sector. Stakeholders are encouraged to provide feedback before the consultation closes to ensure solutions meet operational and compliance needs.

The REC Metering Expert Panel (RECMEP), a key sub-committee under the Retail Energy Code (REC), is inviting nominations to fill a recently vacated Supplier seat.

RECMEP plays a vital role in shaping metering arrangements across the energy industry. Its responsibilities include:

• Reviewing and voting on metering-related change proposals
• Maintaining Category 3 operational products
• Addressing industry-wide metering issues

With the Supplier seat now vacant, the Code Manager has issued a call for nominations. This is an opportunity for suppliers to actively contribute to the governance and development of metering standards that impact the entire market.

The guide, published by the Department for Energy Security and Net Zero on 8 August 2025, outlines what consumers in England, Scotland, and Wales should expect throughout the smart meter journey—from installation to post-installation support [1].

Key Areas Covered:

• Installation Standards: Energy suppliers must follow clear standards when arranging and conducting smart meter installations. This includes providing advance notice, ensuring installers are properly trained, and offering flexible appointment times.
• Consumer Rights: Customers have the right to decline a smart meter, request a specific type (e.g. prepay or credit), and expect clear communication about how the meter works.
• Post-Installation Support: If issues arise after installation, suppliers are expected to resolve them promptly. The guide includes steps for consumers to follow if they experience problems.
• Maximising Benefits: Consumers are encouraged to explore flexible tariffs and energy-saving features enabled by smart meters [1] [2].

You can access the full guide here [1].

References

[1] Smart meters: Your rights and expectations – GOV.UK

[2] How to get the most from your smart meter – GOV.UK