Sydneysiders have been left in the dark amid warnings of more blackouts to come.

There have been local network outages for residents in Beacon Hill, Frenchs Forest, Narraweena, Cromer and Dee Why.

It follows a warning from the Australian Energy Market Operator that power outages could occur in the coming days if demand outstrips what is being generated.

The regulator used its powers to direct electricity generators to avoid shortfalls, averting mass blackouts.

93-year-old Beryl lost power to her Narraweena home last night.

“I’m terrified of the thought of not having any heat,” she told Ben Fordham.

“I just don’t know what I would do because I feel the cold terribly.”

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Ben Fordham says “pensioners shouldn’t be petrified about turning the heating on.”

“This is the reality for thousands and thousands of families right now.

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Energy expert Danny Price told Ben Fordham the problem is “not going to go away quickly”.

“This is years in the making.”

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Image: Getty