Resun AG (an acronym from the French REmplacement SUisse Nucléaire Swiss nuclear replacement) is a company located in Aarau. Its purpose is to manage the construction of two new nuclear reactors. These are unofficially known as Beznau 3 and Mühleberg 2 from the locations where they should be built. After 2020 the existing plants of Beznau (1969 730 MW) and Mühleberg (1972 355 MW) should cease activity. At the same time some import contracts with France for around 2000 MW will expire.
Key people are Hermann Ineichen, Manfred Thumann and Sönke Hacker.