Unit 8 at Heysham 2 beat the previous record held by a power plant in Canada.
Ontario Power Generation’s Pickering 7’s 894 day continuous run between April 26 1992 and October 7 1994 had lasted for 22 years.
John Munro, station director at Heysham 2, said: “This is a fantastic achievement and is testament to the professionalism of the team we have here at the station.
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“This record comes in the station’s 28th year of operation which shows what can be done with a skilled team and targeted investment in the plant.
“Earlier this year we extended the operating life of Heysham 2 by seven years to 2030 and over the next 14 years I’d like us to be challenging our own new operating record.
EDF Energy CEO Vincent de Rivaz said: “Since the acquisition of the UK nuclear fleet in 2009, we have increased its output by 50%, safety performance by 51% and lifespan by 25%.
“The additional output we have achieved of 20TWh of power generation is 6% of the UK’s electricity needs.
“We have achieved that while dramatically improving the safety of our plants - last year we had our best ever performance.
“It is a great credit to our people working at the power stations all around the country. We have done it by investing in the power stations as part of our long-term, responsible approach.”
David Morris, MP for Morecambe and Lunesdale, congratulated staff at Heysham 2.
“Not only is this a great achievement but I know from visiting the station regularly the amount of work that goes into maintaining the station on a daily basis,” said Mr Morris.
“It is not only about continuous production but continuous production safety.”