Syria has stopped purchasing electricity from neighbouring Turkey, Turkish Energy Minister Taner Yildiz told reporters on Thursday.
"Syria halted their power purchases from Turkey one week ago," Yildiz said, adding however that Turkey was ready to resume supplies if a request was received.
The reason for the cancellation was not clear. Turkey had been providing 20 percent of Syria's power supply.
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Ankara warned Damascus in June it was considering cutting power to northern Syria after one of its fighter jets was shot down by Syrian fire.
Turkey and Syria were once close political allies but Ankara has become a vocal critic of Syrian President Bashar al-Assad and his regime since the launch of a brutal crackdown on dissent in March last year.
In November, Turkey halted joint oil exploration with its neighbour and also threatened then to cut electricity supplies.