Imbalance Volumes data from the Trading Operations Report


The page below details highlighted Imbalance Volumes data from the previous month. This data is acquired from BSC Agents and inputted to the Trading Operation Monitoring Analysis System (TOMAS) database.

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Daily Party Imbalance Volumes

This chart shows the daily totals of energy bought from the system (at System Buy Price) by Parties who were “Short”, and the energy sold to the system (at System Sell Price) by Parties who were “Long”. It also shows the average Noon- Effective Temperature to highlight any potential correlation with market conditions and imbalance volumes throughout the period.


During July 2021, there was a total of 2,207GWh of Imbalance Volume; 1,121GWh of long volume and 1,086GWh of short volume. July 2021 had 7less Imbalance Volume than July 2020 but was 19% higher than July 2019. 

Gross Monthly Party Imbalance Volume and Percentage of Total Demand

This chart plots the monthly gross Party Imbalance Volumes. A second plot shows Party Energy Imbalance Volumes as a percentage of total demand. The chart uses latest run type data.


Gross Monthly Party Imbalance volumes fell by 214GWh (8.3%) from June to July 2021. 


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