The move is part of several options which are currently under consideration as the government prepares its new energy supply strategy.
The government is under pressure to help the UK move away from dependence on Russian energy, increase its self-reliance and boost energy security.
An EDF spokesperson told ELN: “EDF is looking at extending the operational life of Sizewell B power station by 20 years, from 2035 to 2055.
“This will protect jobs and importantly the UK energy security as the site provides 3% of the nation’s electricity demand.
“A final decision will be made by EDF in 2024, and this has to be ratified by the government.”
A few days ago, reports claimed that the government was in discussions with EDF to keep a coal-fired power station in Nottinghamshire.