 Construction of the B Station began shortly after the A station was completed . The stations were built during a period in which there were great advances in power station technology , and in the scale of production , which led to them having a variety of intermediate generator set sizes along with a mix of design styles . Blyth A had a generating capacity of 480 megawatts ( MW ) and the B Station 1 @,@ 250 MW . Their combined capacity of 1 @,@ 730 MW briefly made Blyth Power Station the largest electricity generation site in England , until Ferrybridge C Power Station came into full operation in 1966 . The stations were capable of generating enough electricity to power 300 @,@ 000 homes . 
