Cleveland and Durham Electric Power Co
1906 Cleveland and Durham Electric Power Ltd was incorporated to acquire the Cleveland and Durham County Electric Power Co Ltd and a controlling share in Northern Counties Electricity Supply Co[1]. It was operating 2 small generating stations at Consett and Bishop Auckland; their main power station at Grangetown near Middlesbrough was nearly ready to operate[2]
1908 One of 3 companies developing electricity supplies on the North East Coast[3]
1932 One of eight companies absorbed by the Newcastle-upon-Tyne Electric Supply Co[4]