NIE currently provides a monthly report to SONI to facilitate their TUoS billing of Northern Ireland Suppliers. This report aggregates the units at tariff level for all Suppliers in relation to demand sites in Northern Ireland. NIE also provides Suppliers with a monthly extract report along with the DUoS invoices. This extract report shows units at an MPRN and register level. The unit information used by NIE for DUoS billing and sent to SONI for TUoS billing is the same.

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