Give us coal for Christmas please: Ukraine

Ukraine is pleading with Australia to send coal shipments for Christmas as Russia targets the nation's energy infrastructure, dooming millions to a freezing winter.

Temperatures in Ukraine have already dipped below freezing and electricity is being rationed through scheduled blackouts as Russia ramps up its attacks.

Kyiv's envoy to Australia Vasyl Myroshnychenko is asking Australia to have coal ships loaded before Christmas to help Ukrainians make it through the winter with electricity and running water.

A shipment of coal takes around six to eight weeks to reach Ukraine, before being carted by train.

Freezing temperatures are expected to linger into March.

"Millions remain without power as Russia targets our energy infrastructure," Mr Myroshnychenko told AAP.

"So we are asking Australia to send more coal shipments and power generators for winter."

About 10 million people, the equivalent of Sydney and Melbourne combined, remain without power in the war-torn country.

Australia recently upped its military support, sending additional Bushmaster vehicles, but the ambassador says Ukraine also needs helps with its energy grid.

"Without power and running water, millions won't be able to live in the cities," he said.

Australia has already donated 70,000 tonnes of coal.