Australia's greenhouse gas emissions in 2018 rose for a fourth year in a row, an increase at odds with the country's Paris climate pledge, according to a government submission to the United Nations.

The National Inventory Report to the UN Framework Convention on Climate Change showed emissions last year were 537 million tonnes of carbon dioxide-equivalent (which include all greenhouse gases), based on preliminary figures.

Yallourn Power Station in Victoria's Latrobe Valley. The power sector has been one of the few to show falling emissions as renewables increase their share. Credit:AAP

That tally, which includes changes to land-use and forestry, was up 0.4 per cent from 2017's 534.7 million tonnes of CO2-e.

The Morrison government is due to release its full figures for 2018 emissions by the end of this month. The UN report provides an indication of which way the trajectory will be pointed.