Updates to Schedule 14 Measurement Transformers Commissioning Timescales
Summary
The current timetables in REC Schedule 14 Metering Operations sections 15.6 and 30.6, where an Electricity Metering Asset requires commissioning in accordance with BSC Metering CoP 4 and the Measurement Transformers are owned by the DNO, or in 15.7 and 30.7 where the Measurement Transformers are not owned by the DNO, may no longer be fit for purpose post the implementation of MHHS Milestone M16, where the Settlement timetable reduces the RF run to 4 months.
Latest update and next planned activity
Date of latest update
Latest Update
12/08/2026 - the Metering Expert Panel approved the Change Report (Final Recommendation) V1.2. This Change Proposal will be implemented on 26 June 2027. If you wish to appeal this decision, this must be received by COB 28 August 2026.
Impacts Overview
Impacted REC Parties and Market Participants
Distribution Network Operator
Electricity Metering Operative
Energy Supplier
Meter Operator Agent
Impacted REC Documents
Schedule 14 - Metering Operations
Other Industry Codes impacted
Balancing and Settlement Code (BSC)
Priority and rationale
Standard
Priority last updated on 29 May 2026
Change Reports, Impact Assessments, Consultations and Documents
Change Reports
Solution development
Problem Statement
The current timetables in REC Schedule 14 Metering Operations sections 15.6 and 30.6, where an Electricity Metering Asset requires commissioning in accordance with BSC Metering CoP 4 and the Measurement Transformers are owned by the DNO, or in 15.7 and 30.7 where the Measurement Transformers are not owned by the DNO, may no longer be fit for purpose post the implementation of MHHS Milestone M16, where the Settlement timetable reduces the RF run to 4 months.
No documents available.
There is currently no Change Plan.
Original submission
Change details
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1 Oct 2025
Change details
Updates to Schedule 14 Measurement Transformers Commissioning Timescales
The current timescales in Schedule 14 section 15.6 and section 30.6 where an Electricity Metering Asset requires commissioning in accordance with BSC Metering CoP 4 need to be reviewed before the settlement timetable changes from RF being 14 to 4 months to ensure they are still fit for purpose.
REC Schedule 14 Metering Operations sets out in section 15.6 and section 30.6 the process that shall be followed where an Electricity Metering Asset requires commissioning in accordance with BSC Metering CoP 4 and the Measurement Transformers are owned by the DNO. The timescales for this are currently:
• DNO commissions the Measurement Transformers within 16WDs of energisation (or receipt of D0139)
• DNO sends D0383 Notification of Commissioning Information with 21WDs of energisation
• MOA commissions Metering Asset within 32WDs of energisation
• Electricity Supplier resolves any defects/omissions preventing commissioning within 65WDs of energisation
• After resolution, MOA commissions Metering Asset within 80WDs of energisation
• MOA notifies Electricity Supplier commissioning has been completed within 5WDs of completion
In total, this process could take up to 85WDs. Under the new settlement timetable being introduced at MHHS milestone M16 (currently planned for July 2027), RF will be changing to 4 months which is very close to this 85WD window.
• DNO commissions the Measurement Transformers within 16WDs of energisation (or receipt of D0139)
• DNO sends D0383 Notification of Commissioning Information with 21WDs of energisation
• MOA commissions Metering Asset within 32WDs of energisation
• Electricity Supplier resolves any defects/omissions preventing commissioning within 65WDs of energisation
• After resolution, MOA commissions Metering Asset within 80WDs of energisation
• MOA notifies Electricity Supplier commissioning has been completed within 5WDs of completion
In total, this process could take up to 85WDs. Under the new settlement timetable being introduced at MHHS milestone M16 (currently planned for July 2027), RF will be changing to 4 months which is very close to this 85WD window.
Review these timescales to ensure they are still fit for purpose or need to be shortened to be more in line with the new RF window being introduced by MHHS.
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Impacts
No details provided
Billing accuracy
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Schedule 14 - Metering Operations
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No details provided
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No details provided
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No details provided
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No details provided
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No details provided
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Distribution Network Operators, Electricity Metering Operative, Energy Suppliers, Meter Operator Agent
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Balancing and Settlement Code (BSC)
Potential to impact the BSC, to be confirmed at CCSG
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No details provided
Priority & timing
No
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No details provided
Billing accuracy
Activity
Problem Statement changed to The current timetables in REC Schedule 14 Metering Operations sections 15.6 and 30.6, where an Electricity Metering Asset requires commissioning in accordance with BSC Metering CoP 4 and the Measurement Transformers are…
Problem Statement changed to The current timetables in REC Schedule 14 Metering Operations sections 15.6 and 30.6, where an Electricity Metering Asset requires commissioning in accordance with BSC Metering CoP 4 and the Measurement Transformers are owned by the DNO, or in 15.7 and 30.7 where the Measurement Transformers are not owned by the DNO, may no longer be fit for purpose post the implementation of MHHS Milestone M16, where the Settlement timetable reduces the RF run to 4 months..
Show moreChange Category has been updated to Category 1.
Change Path has been updated to Self-Governance.
Status has been changed to Approved - In Appeal Window.
Implementation Date has been updated to 25 Jun 2027.
Change Report - Draft Change Report has been updated to Test (3).txt.
Change Report - Initial Assessment and Change Plan Report has been updated to Comments deadline for Test (4).txt - 2026-01-31.
Status has been changed to Issue Review.