Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 138,931 pages of information and 225,312 images on early companies, their products and the people who designed and built them.
of Wellington Road, Dewsbury.
1901 The company was incorporated on the 26 July, under the Yorkshire Electric Power Act, to construct electrical generating stations for providing a supply of electrical energy throughout the greater part of the West Riding of Yorkshire. 
1902 Thornhill Power Station commissioned
1926 Construction of Ferrybridge Power Station| began
1927 Ferrybridge power station was commissioned
1927 Transmission Lines and Cables Construction Co., Keighley, got the contract from Yorkshire Electric Power Co to build the Ferrybridge-Beal-Snaith 33kv overhead line. The masts and towers were a combination of 'H' girder steel masts, lattice steel masts, lattice steel angle masts and lattice steel angle towers. They were designed and supplied by W. T. Henley (Henley Overhead Transmission).
1932 Completion of the construction of the National Grid in the Mid-East England area; 16 power stations were interconnected using 322 miles of 132kV transmission lines, including new stations at Kirkstall and Ferrybridge; a secondary system was established in South Lincolnshire and Rutland in order to open up agricultural districts using 202 miles of 33kV lines