South Korea has suspended operations at two more nuclear power reactors and extended the closure of a third after it was found that cables had been supplied using fake documents.
After testing the cables failed to meet proper performance levels.
Han Jin-hyun, Vice Minister for Trade, Industry and Energy said: “We expect unprecedented supply shortage this summer as we have to meet power demand while three reactors are halted.”
The timing could not be worse as South Korea enters its hot summer when power demand for air conditioning is highest.
Last year two other nuclear reactors were closed after a similar scandal, adding to public worries about nuclear safety.
South Korea’s president has pledged a thorough investigation.