The energy supply fears that the troops will call to fight the wildfires of Australia

BATEMANS BAY: The skies turned black and it rained ashes as fires spread across the southeast on Saturday, threatening the supply of energy to major cities and causing the call of 3,000 military reservists.

Temperature records were broken and hurricane winds hit coastal communities affected by fire in the two most populous states. New south Wales and Victoria

New south Wales Premier Gladys Berejiklian warned that worst-case scenario projections were "coming to fruition", although large-scale evacuations meant the human toll was minimised.

Since late September, 23 people have died, more than 1,500 houses have been damaged and an area roughly twice the size of Belgium or Hawaii has been burned.

The latest deaths occurred in a tourist paradise southwest of Adelaide, when two people were trapped in a car invaded by flames on Friday.

But high winds and high temperatures continued to feed hundreds of fires and cause chaos.

Bushfires took out two substations and transmission lines, prompting authorities in New south Wales that an area home to almost eight million people and the nation's largest city Sydney I could experience blackouts.

We are on a long night and we still have to face the worst, Berejiklian warned when another total fire ban was declared for Sunday.

Prime Minister Scott Morrison announced the largest military convocation in living memory, mobilizing 3,000 reservists to help thousands of volunteer firefighters who have been fighting the flames.

Today's decision puts more boots on the ground, more planes in the sky, more ships in the sea, said Morrison, who made the announcement after being ridiculed for his response to the deadly disaster.

A state of emergency had been declared in much of the densely populated southeast and more than 100,000 people were told to leave their homes in three states.

Thousands heeded that call on Friday, abandoning summer holidays and piling into cars that clogged the highways linking southeastern coastal towns with the relative safety of Sydney or larger towns.

Several emergency warnings were issued on Saturday, and there were fears one one blaze southwest of Sydney could reach the city's outskirts.

Sydney recorded its highest-ever temperature of 48.9 degrees Celsius (120 degrees Fahrenheit) in the western suburb of Penrith, and the nation's capital Canberra hit 44 degrees Celsius, also an all-time record, a Bureau of Meteorology spokesman said.

Thousands of volunteer firefighters fought the hells while some residents stayed to defend their homes.

Just outside the seaside town of, a four-hour drive south of Sydney, locals joined forces with firefighters to tackle the fires.

Today, we have had nothing less than a disaster. There was a great fire ... the high temperatures and the change in the south are putting great pressure on the resources we have, said local Adam Pike. AFP

The guys who know the mountain, the guys who know the fire, helped save at least 10 to 12 homes on this street ... we are very grateful for your help.

The only activity in the bustling tourist center was at an evacuation center, where hundreds of locals forced to leave their homes took refuge in an open field in tents and caravans.

Mick Cummins, 57, and his wife fled to the evacuation center when the fire swept through their rural town on New Year's Eve.

We said this is too difficult for us, let's go out. We went to the beach and then the fire from hell came over the hill, he told AFP.

I was here in the fires of '94. I thought it was bad. That was just a barbecue in comparison, he said.