Electricity started to return to Syria after the country switched to backup power stations following a "terrorist" attack on a key gas line on Wednesday evening, Electricity Minister Imad Khamis said, Xinhua reported.
Khamis said that maintenance work is underway to fix the damaged line, estimating that it will take 48 hours.
Earlier, Khamis said a key gas line that feeds electricity stations south of Syria's capital Damascus was attacked, resulting in a major electricity outage in Damascus and some other provinces.
The attack came as the rebels, besieged by the army in rebellious areas near Damascus, fired random mortars toward several parts of the capital.
Damascus residents suffered frequent power cuts due to the rebels' attacks on energy resources.