Bulgaria haltеd electricity exports to neighbouring countries due to an ongoing strike in the country's largest coal mining complex Maritsa East, the energy ministry said.
Power exports will halt at midnight on Friday and will resume as soon as the fuel stockpiles of thermal power plants Brikel, Maritsa East 2, Contour Global Maritsa East 3 and AES - 3C Maritsa East 1 return to the levels required by the relevant legislation, the energy ministry said in a statement on Friday.
Bulgaria exports electricity to Romania, Serbia, Macedonia, Greece and Turkey.
The trade unions at the mining complex launched the strike last weekend with demands that each worker get a 1,000 lev ($659/511 euro) bonus as the mines' annual output last year exceeded plans by 6.0 million tonnes.
The Maritsa East mines are the main source of coal for three thermal power plants in central Bulgaria, which are among the largest in the country.