The creation of the Sizewell C power station will mark the latest stage in the 50 year history of the Suffolk coastal site.
The original Sizewell Nuclear Power Station, now called Sizewell A, was built in the early 1960s and began operating in 1966.
It was decommissioned in 2006, being replaced by Sizewell B.
The replacement power station took seven years to build from 1988 to 1995 and first synchronised with the National Grid on February 14 1995.
Capable of supplying more than 2.5m homes with energy - equivalent to the daily domestic needs of Norfolk and Suffolk - it is set to be decommissioned in 2035.
The Sizewell site has been the focus of a number of protests over the years including members of the Stop Nuclear Power Network UK group wearing fish masks in February 2011.
In January 2003, determined protesters from Greenpeace successfully breached security at the site for the second time in four months. They made it on to the roof and past an inner security barrier to show what they felt were weaknesses in security.
Click on the links to the right for a look through a selection of images from the EDP's Sizewell picture archive.
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