A power blackout briefly hit Myanmar's main urban centres and far-flung towns on Friday, including commercial hub Yangon and parts of the capital Nay Pyi Taw, authorities and AFP correspondents said.
Yangon Electricity Supply Corporation reported a "temporary power outage in Yangon region today at 13:35" (2.05pm Thailand time), adding that it was working to restore power.
Myanmar's second-biggest city of Mandalay, the eastern town of Hpa-an, southern Mon state and parts of Rakhine state in the west also lost power, residents told AFP.
Parts of the military-built capital Naypyidaw also experienced outages.
By 2.10pm power had been restored, Yangon Electricity Supply Corporation said in a statement.
Local media reported an official from Nay Pyi Taw's Electricity Department as saying the national grid had suffered a "system breakdown", without elaborating.
Power outages are common in Myanmar due to a creaky and outdated electricity grid, with demand regularly outstripping supply during the sweltering summer months.
The country has been in turmoil since a Feb 1 military coup that ousted the government of civilian leader Aung San Suu Kyi.
Yangon's state-backed electricity provider warned residents in July that electricity supply could be disrupted if they continued refusing to pay their power bills -- part of an ongoing boycott of junta services.