The story
The board was required to supply electricity to homes and businesses, as regulated by the Act, and under terms of reference from the Electricity Council and the CEGB. In many towns, the board opened showrooms, to provide customer service facilities such as paying bills, as well as demonstrating and supplying the latest electrical goods to customers. The total number of customers supplied by the Board was:
The post-war period one of fast growth for the electricity industry. The pre-war National Grid system vastly expanded, and many new power stations were opened across the region. One major customer British Rail: when the West Coast Main Line electrified in the 1960s, and the East Coast Main Line in the 1980s, the electricity boards were required to supply the lines passing through their territory with electricity direct from the National Grid.
Existing electricity suppliers taken over at nationalisation
The Electricity (Allocation of Undertakings to Area Boards) Order 1948 (SI 1948/484) transferred the electricity business of the following local authorities and private companies to the new board effective 31 March 1948.
From Wikipedia’s article on East Midlands Electricity, shared under CC BY-SA 4.0.3