Scott Morrison will attend a major climate change conference in Glasgow after coming under intense international and domestic pressure to attend the crucial talks.
The prime minister on Friday committed to travelling to the United Kingdom for the COP26 conference which starts on October 31.
"It is an important event," he told reporters at Kirribilli House on Friday.
"The government will be finalising its position for me to take to the summit prior to my departure over the next fortnight."
Australia is being urged to boost its emissions reduction goal at the international summit by signing up to a net-zero-by-2050 target.
But the fate of that decision rests with the Nationals as the junior coalition partner prepares to discuss cabinet's energy plan on Sunday.
Mr Morrison's announcement came after the Queen - who will attend COP26 - appeared to suggest she was irritated by a lack of action in tackling the climate crisis.
Mobile phone footage emerged of her saying she still didn't know which world leaders would attend the conference.
Earlier in the week, Prince Charles urged Mr Morrison and other world leaders to attend, calling it the "last chance saloon" to save the planet.
Labor has also demanded the prime minister travel to Scotland for the meeting, while influential billionaire Andrew "Twiggy" Forrest this week dialled up pressure on climate change.
Australian Associated Press
Sign up for our newsletter to stay up to date.