Re-balancing the balancing costs –BSUoS charges to be levied solely on suppliers from April 2023

Balancing the electricity system costs money. National Grid in its role as Electricity System Operator (ESO) takes actions in every half hour to achieve the remarkable feat of keeping supply and demand finely balanced on our national electricity system – maintaining a system which runs between 49.8 and 50.2Hz with very high reliability. Currently, the costs of balancing the system are recovered from suppliers and large transmission connected generators through Balancing Services Use of System (BSUoS) charges. BSUoS is levied on a £/MWh basis, based on the cost of balancing the system in each half hour divided by the total chargeable volume on the system in that half hour.

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