The Electricity (Applications for Licences and Extensions of Licences) Regulations 1990
Anyone who generates, transmits or supplies electricity requires, unless exempted by an order made under section 5 of the Electricity Act 1989, a licence to do so under section 6 of the 1989 Act and applications for licences or where appropriate for an extension thereto shall be made in the manner prescribed in regulations made by the Secretary of State.