Current Balancing Services Use of System (BSUoS) Charges
Summary
NESO publishes half-hourly BSUoS charges across three run types (Interim Initial, Settlement Final, Reconciliation Final) with daily updates of actual prices and volume data. A system outage paused billing from 26 April to 27 May 2024, with normal publication resuming 28 May 2024. The data provides visibility into balancing service costs allocated to suppliers and generators.
Why it matters
BSUoS transparency enables market participants to forecast charges and hedge exposure, though the socialised cost structure means efficient generators still pay for others' balancing needs. The month-long billing pause demonstrates operational risk in critical charging systems.
Key facts
- •Daily publication of half-hourly BSUoS prices
- •Three run types: Interim Initial, Settlement Final, Reconciliation Final
- •System outage paused billing 26 April to 27 May 2024
- •Includes total costs and volume by settlement period
Areas affected
Memo
There is a file for each run type we calculate a BSUoS charge for - Interim Initial (II), Settlement Final (SF) and Reconciliation Final (RF). These are updated daily with the actual Half Hourly BSUoS price. Total costs and volume information by settlement period is also published here. >\*\*NOTE:\*\* We have paused the billing due to system outage from 26/04/2024 to 20/05/2024 (inclusive) and during this period there will be no BSUoS web prices issued. The outage has been extended now until 27/05/2024, the billing will resume on 28/05/2024 and the data will be published on daily basis. Please find the [link](https://subscribers.nationalgrid.co.uk/t/d-e-ettdtjk-ijdyltpil-t/) for more information.