The powerful earthquake struck Sichuan after midday on Monday, with the epicentre deep in the province's mountainous interior in the west.
The state electricity company confirmed in a statement that the thermoelectric plant at the Zahrani power station had stopped.
The decision found that the IEC misused its standing as a monopoly to harm those who would buy electricity from private electricity manufacturers.
The entire city of Islamabad, Pakistan's capital, lost power in the blackout.
Israel Electric Corp (IEC) began sporadic, three-hour power cuts on Dec. 18 to press for payment of some $519 million owed by the Jerusalem District Electricity Company (JDECO).
Electrical supply company Edesur tweeted that a massive failure happened in the electrical interconnection system.