 In 1989 , Blyth A won a place in the Guinness Book of Records by setting the world record for total running hours in a plant of its size , when all four generating units achieved 200 @,@ 000 running hours . With the privatisation of the UK 's electricity supply industry in 1990 , the station passed into the ownership of National Power . In 1991 , the two 275 MW units at Blyth B ( units 5 & 6 ) were decommissioned on the grounds of economy , despite the station having been modernised in the early 1980s . This decommissioning resulted in 260 job losses . 
