Country profile: Switzerland

Summary figures for 2015

The following information is from the NEA publication Nuclear Energy Data, the annual compilation of official statistics and country reports on nuclear energy in OECD member countries.

Number of nuclear power plants connected to the grid
Nuclear electricity generation
(net TWh) 2015
Nuclear percentage of total electricity supply
OECD Europe
OECD Total
1 878.7
NEA Total
2 073.9

Country report

Main events in 2015

Reactor pressure vessel in the Swiss NPP Beznau 1: Detection of flaw indications similar to those identified in the Belgian reactors of Doel 3 and Tihange 2.

While carrying out ultrasonic measurements of the reactor pressure vessel of the Beznau 1 nuclear power plant (PWR, 2-Loop Westinghouse design, commissioned in 1969), the operator detected flaw indications similar to that of the Belgian reactors, but smaller in number, size and extension. Currently, further assessment of these findings by the licensee has been initiated and is ongoing.

The Swiss Federal Nuclear Safety Inspectorate (ENSI), in collaboration with a group of international experts, will review a project plan (roadmap) provided by the operator, outlining procedures for the characterisation and evaluation of the indications in the base material of the Beznau 1 reactor pressure vessel.

The operation of Beznau 1 may only be started again if the safety of the reactor pressure vessel is confirmed.

Source: Nuclear Energy Data 2016

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Last reviewed: 21 December 2016