P483 Balancing and Settlement Code (BSC) changes
- Publication type:
- Code modification
- Publication date:
- Topic:
- Electricity transmission
- Industry sector:
- Transmission Network
Outcome of changes to Balancing and Settlement Code P483 to remove a requirement for customers to be half hourly settled for their flexibility to be traded.
Details of outcome
We have decided to approve P483. These changes will support a more efficient and economic electricity system and promote competition.
Start date
10 working days after Elexon’s notification to industry.
Code modification description
P483 has been proposed by Axle Energy. At the BSC panel meeting on 10 July 2025 the panel recommended its approval.
P483 aims to address a known barrier to the trading of flexibility (changes in demand) from domestic and small business customers. Currently a Virtual Lead Party (VLP) or Virtual Trading Party (VTP), also known as aggregators cannot trade flexibility if the customer is not half-hourly settled. In practice, only a small proportion of customers are currently half-hourly settled. This is dependent on the customer’s supplier and so is a barrier to the growth of flexibility until Market-wide Half-Hourly settlement is complete.
P483 aims to resolve this barrier by removing the requirement for customers to be half-hourly settled. This approach can be used in situations where a customer has an asset with an asset meter and the VLP or VTP is using the asset meter to measure the demand change of that asset.