From April 2022 for DUoS and April 2023 for TNUoS (subject to Ofgem consultation), a proportion of your charges will be based on a series of fixed charging bands.

Distribution Use of System (DUoS) and Transmission Network Use of System (TNUoS) charges cover the costs of maintaining the electricity networks that supply your energy. Ofgem is implementing changes to DUoS and TNUoS charges to ensure that costs are distributed fairly across all consumers.


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