The Electricity Act 1989 (North of Scotland Specified Area) Order 1990
This Order specifies the area in Scotland in respect of which the Secretary of State and the Director General of Electricity Supply have a duty to exercise their functions under Part I of the Electricity Act 1989 in a manner which is best calculated to secure that prices charged to tariff customers by public electricity suppliers for electricity supplied to premises in that area are in accordance with tariffs which do not distinguish (directly or indirectly) between different parts of that area.