Regulation 21 Dispute notices
An electricity supplier may dispute any determination made by the EII levy administrator under regulation 18 (EII levy notices), 20 (corrections to levy information) or 23 (mutualisation charge) by giving a notice to the EII levy administrator setting out—
the determination which the electricity supplier is disputing;
the basis on which they dispute the determination.
For the purposes of paragraph (1), a dispute about a determination made by the EII levy administrator includes a dispute about that body’s failure to make a determination.
A notice under paragraph (1) must be given by an electricity supplier before—
the 28th day after the day on which the determination was notified to that electricity supplier; or
in the case of a dispute about the failure of the EII levy administrator to make a determination, the 28th day after the last day by which the determination which is the subject of the dispute should have been made.
Where an electricity supplier has given a notice under paragraph (1) in respect of a determination, that determination has effect notwithstanding the giving of that notice.