UPDATE | As of Sunday morning Hydro Ottawa's local outage map is showing no outages.
A Hydro One spokesperson told CBC News in an interview Sunday morning that approximately 260 customers were without power across the Ottawa region, with the largest concentration of outages in Appleton, Ont. The company estimated power would be restored between 12 p.m. and 1 p.m.
As of Sunday afternoon, Hydro One's outage map showed only small, scattered outages across eastern Ontario.
Some eastern Ontario residents may be without power until Sunday after strong winds caused thousands of people in the nation's capital and the wider region to lose power Saturday.
Hydro Ottawa said an outage caused by a "loss of supply" from the provincial grid initially affected roughly 27,000 of its customers.
Shortly after 1 p.m., the power utility said it was "performing emergency switching" to turn the lights back on for some customers, while waiting for provincial supply to resume.
By 1:30 p.m., the number of affected customers had been cut "almost in half," according to a spokesperson, and the size of the Hydro Ottawa outage continued to shrink throughout the afternoon.
As of Saturday evening, the local outage map showed only a few dozen of their customers remained without power.
Scattered outages across region
In a statement to CBC, Hydro One spokesperson Alicia Sayers said that at 12:13 p.m. the power utility experienced an outage on a transmission line serving its Woodroffe and Lincoln Heights transmission stations, which supply Hydro Ottawa with electricity.
A notice on Hydro One's website said crews were working to restore power following "high winds that moved across the province," with damage including downed power lines, fallen trees and large branches.
While the lights were mostly back on in Ottawa, as of 8:45 p.m. there were still scattered outages affecting hundreds of people across the wider central and eastern Ontario regions, including roughly 2,000 Hydro One customers in the Bancroft, Ont., area.
Some people in the "hardest hit" areas may be without power overnight, Hydro One said in a Saturday evening tweet.
Earlier Saturday afternoon, Hydro One's outage map was showing more than 6,500 customers without power in Kemptville, Ont., and nearly 2,400 in the rural Ottawa community of Greely.
Both of those outages have mostly been resolved.
Saturday's outage comes as many in the Ottawa area are still recovering from the deadly derecho storm that hit the area on May 21, which caused widespread destruction and left some people without power for more than a week.