Cash Flows data from the Trading Operations Report


The page below details highlighted Cash Flows data from the previous month, as highlighted in the Trading Operations Report (TOR). This data is acquired from BSC Agents and inputted to the Trading Operation Monitoring Analysis System (TOMAS) database.

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Party cashflows in the Settlement system

This chart shows an absolute sum of Settlement Cashflow aggregated by Party.



In May 2022, all three Party Cashflows decreased from April 2022. Total Balancing Cashflow decreased by £32m (17%) to £155m, the Total Residual Cashflow Reallocation Cashflow (RCRC) decreased by £15m (27%) to £39m and Total Imbalance Cashflow decreased by £124m (29%) to £305m compared to April. 

Accepted offer cashflow/bid cashflow 

The two graphs in the sections below depict the cash flow associated with accepted bids and offers by Period and Fuel Type. It provides an insight into how much balancing actions cost and how the amount is influenced by the time of day and type of BMU used for balancing. Positive values on either graph reflect cost to the system (i.e. payments made to BSC Parties). Negative values show payments made by BSC Parties.

Accepted offer cashflow by period and fuel type


The highest Offer cashflows seen in May 2022 occurred during Settlement Period 47 (£2.5m); 68% of the Offer cashflow in this Settlement Period went to Gas BMUs, with a further 15% to Biomass and 15% to Pumped Storage BM Units. 

Accepted bid cashflow by period and fuel type


The lowest net Bid cashflow occurred during Settlement Period 15 (-£980k). 

Unpaid BSC Charges

The graph in below shows the amount of BSC Trading Charges that have been unpaid by BSC Parties. When BSC Trading Charges are left unpaid following the failure of a BSC Party the outstanding amount is mutualised by the remaining BSC Parties. The share each BSC Party pays of the outstanding amount is determined by the Default Funding Share.

The cumulative number of Suppliers that have had a Supplier of Last Resort are also shown for context.


During May, there were no further failing BSC Parties assigned a SoLR, the last failed Supplier was Together Energy Retail Ltd (BSC Party ID: EDDINGTN), which Defaulted on 6 January 2022. 

The total unpaid Trading Charges from the failing Suppliers in May were £1.4m, a slight decrease from £1.9m in March.  

Elexon are currently processing an Open Data Request to publish more information on failed Suppliers (Data Request ID: DR343096). These data items have finished a 15WD Data Release Consultation: Data Relating to Default Funding Share. There were no responses disagreeing with Elexon’s recommendations. The data items will go to the BMRS Change Board for final approval and enter a 15WD Appeals Window. Subject to approval, the data items will be incorporated into this section of the Trading Operations Report to provide enhanced reporting and further transparency into the Default Funding Share and the impact of failing Suppliers. 


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