CONTENTS

  • Introduction
  • Market Entry and Party Registration Process
    • Virtual Lead Party (VLP) and Asset Metering Virtual Lead Party (AMVLP) – Entering the Market
    • CVA Market Entry
    • Accession
    • Appoint Authorised Signatories
    • Order Communications Line
    • CVA Qualification testing
    • Funds Accession
    • Nominate operational contracts
    • Register Party Role
    • SVA Qualification Process
    • Planning meeting
    • Completion/submission of the SAD
    • PAB Approval
  • Secondary BM Units, Meters and Asset Meters
    • Registration of Secondary BM Units
    • MSID Pair Allocation – P0278
    • Completing the MSID Pair Allocation template
    • The MSID API enables authorised participants to insert, read, and update MSID Pairs and their associated customer consent information in real-time:
    • Asset Meter Registration and AMSID Pair Allocation
    • Stage 1: Asset Registration
    • Stage 2: AMVLP Agent Registration
    • Stage 3: Asset Meter Registration
    • Allocation of Asset Meters to a Secondary BM Unit
  • Settlement Expected Volumes and Baselining Methodologies
    • Registering an Additional or Secondary BM Unit and associated Metering Systems to use Settlement Expected Volumes
    • Baselining Methodology
    • Event Days
    • Data flows for Baselining Statuses and Event Days
  • Lifecycle of the trading day and how we calculate Settlement for VLPs and AMVLPs
    • Imbalance Settlements for VLPs and AMVLPs
    • Data flows
    • Trading charges
  • FAQs
    • Can other BSC parties have aggregated Secondary BM Units?
    • Can you register in multiple roles?
    • Where can you find a list of all the charges VLPs and AMVLPs face?
    • Can VLPs and AMLVPs register assets on behalf of a third party (i.e. a client’s assets)?
    • Can VLPs AMVLPs use a trading agent to participate in BM?
    • What are the penalties for over and under delivery?
    • Is there a limit to the size in MW of secondary BM Units?
    • In the case the BM Unit is larger than 50MW or 100MW, are there any additional requirements on the BM Unit (metering etc.)?
    • What data does a VLP or AMVLP need to send to Elexon for a Secondary BM Unit on a daily basis?
    • Can a VLP or AMVLP setup MVRN Authorisations for a Secondary BM Unit?
    • What if an overlap occurs when submitting MSID / AMSID Pairs?
  • Other considerations
    • Other Codes
  • Relevant Documents
  • Further Information

Wider Access Guidance For Virtual Lead Parties (VLPs), Asset Metering VLPs and Suppliers V8.0

Effective From Date:14/07/2026
Status:LIVE
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