The Penly Nuclear power plant (Centrale nucléaire de Penly) is found some 6 miles (9.7 km) northeast of Dieppe. It lies on the border of two French municipalities: Penly and Saint-Martin-en-Campagne in the département of Seine-Maritime, Normandy, on the English Channel coast.

The Penly Nuclear power plant employs about 670 full time people and is owned and operated by the French company Électricité de France (EDF). Water from the English Channel is used for cooling.

The two PWR units are of the 1330 MWe class. The installed total output is 2764 MW, which means the plant is about average for French nuclear plants. It feeds on average about 18 billion kilowatt-hours per year into the public grid, corresponding to about 80% of the current annual consumption of Normandy. It is about ten kilometres from Dieppe.

In January 2009, the French government announced that a third reactor, the second French EPR reactor, would be built in Penly. Construction was announced for 2012 with connection to the grid following in 2017. GDF Suez is to own a part of the plant, with the majority taken by EdF.