Fewer than 20 households in Hamilton remained without power on Saturday evening, as the push to restore electricity to customers who suffered outages during last weekend’s ice storm comes to a close.

Hydro One, which serves some of the city’s suburban and rural areas, says Hamilton customers who are still without power should see service restored before the end of Saturday.

However, homes and businesses that suffered damages to their electricity inputs won’t come online until an Electrical Safety Authority inspector approves the repairs, said Nancy Shaddick, a Hydro One spokesperson.

Horizon Utilities said on Friday that it had restored power to all of its Hamilton customers who were affected by the outages. 

It's now been a week since the big ice storm turned off the lights, heat and, in some cases water, to hundreds of thousands of customers in Ontario, Quebec and Atlantic Canada.

About 30,000 customers in Ontario and New Brunswick remain in the dark one week after the storm. And warming temperatures have caused new power outages in Toronto.

Toronto Hydro CEO Anthony Haines said early Saturday that melting ice falling from trees and other structures has led to fresh damage. At about 1 a.m. ET the number of customers without power had dropped below 20,000 for the first time, but by 8 a.m. it was back up to around 23,000. The number was hovering at 18,000 as of mid-afternoon Saturday.

The falling ice caused at least one injury when a Hamilton worker was struck in the head, Toronto Mayor Rob Ford said. Officials couldn't provide an update on the worker's condition. 

"This is Day 7 and there's light at the end of the tunnel," said Ford in an interview with CBC News midday Saturday. "What that day is, I can not tell you...We're trying our best."