Paragraph 3

The licensee shall issue to each authorised supplier an invoice for the amount determined by applying the p/kWh tariff to the units of electricity actually supplied by each authorised supplier during each period in relation to the relevant year t specified in the following table and such invoices shall be issued in respect of each such period in relation to the relevant year t by the dates specified in the following table specifying the amount due and the date required for payment of such amount by the authorised supplier which shall not be more than 28 days from the date of the invoice.