Part 1: Nuclear Energy Generation Projects: Regulated Asset Base Model Section 4: Expiry of designation
This section sets out the circumstances in which a nuclear company’s designation for the purposes of the nuclear RAB model would expire.
	Subsection (1) provides that a designation would end either on its expiry date or at the point where the nuclear company has entered into a revenue collection contract with a revenue collection counterparty (as defined in Part 2), where this occurs before the expiry date. A designation could also end sooner, as set out in section 5.
	Subsection (2) defines the expiry date as being 5 years from the date of the designation notice, or, if the expiry date has been extended under subsection (3), the expiry date specified in the most recent extension notice.
	Subsection (3) gives the Secretary of State the ability to extend the expiry date for the designation of a nuclear company beyond its current expiry date by giving a notice to the company. This can be done as long as the existing expiry period has not yet expired and the new expiry period is not more than 5 years from the date of the extension notice.
	Subsection (4) requires the Secretary of State to consult on an extension to the expiry period with listed entities, and any other persons they consider appropriate. This provides opportunity for those directly affected by the extension, or who have special expertise relevant to the decision, to provide their views on the matter.
	Subsection (5) states that when the designation ceases to have effect by virtue of subsection (1), the Secretary of State must publicise this fact.