Donald Trump can’t stop global climate action. If we stick together, it’s the US that will lose out | Bill Hare

Donald Trump’s re-election to the White House is a major setback for climate action but ultimately it’s the US that could end up losing out, as the rest of the world will move forward without it.

The US is the world’s biggest economy and its second biggest emitter. Positive US engagement on climate has been crucial to landmark leaps forward, like getting the Paris agreement over the line, and just last year committing to transitioning away from fossil fuels.

The US missing in action in the latter half of this critical decade for climate action is nobody’s idea of a good outcome.

President-elect Trump has promised to leave the Paris agreement and reports have emerged that he could be thinking of pulling out of the underlying United Nations framework treaty on climate change. But we’ve been here before and the truth is that a second Trump presidency can’t stop climate action, just like his denial of human-induced climate change won’t spare the US from its impacts.

The energy transition is now well under way. The economics of renewable technologies are so attractive that they have become an energy juggernaut. Since the Paris agreement was signed in 2015, global investment in clean energy has increased by 60%.

Nearly US$2tn a year is now invested in clean energy projects, almost double that spent on new oil, gas and coal supply. Before the pandemic, this ratio was closer to 1:1. The US added 560 gigawatts of renewable capacity in 2023. That’s about six times the size of Australia’s entire electricity capacity, added in just one year.

Domestically, Joe Biden’s Inflation Reduction Act has set wheels in motion for climate investment that will be hard, and politically unpopular, to undo. Famously, no Republicans voted for the legislation but red states have been the main beneficiaries of the money, projects and jobs it has created. House Republicans have even pushed back against their peers to protect some of the act’s clean energy tax credits.

Climate impacts are accelerating in pace and scale that is untenable to ignore. Hurricanes Helene and Milton, supercharged by climate change, are expected to cost more than US$50bn. Fires in California, heatwaves in the sunbelt states, and flooding in the US South are wreaking huge damage on Americans. Last year a poll showed a majority of them feel that climate change is already causing serious effects.

None of this stops the day Trump re-enters the White House.

Internationally, we’ve been in this position before. In 2001 George W Bush quit the 1997 Kyoto deal. Last time Trump was in power, he left the Paris agreement, albeit for a short time. I don’t want to downplay the impacts of Trump, or the Project 2025 agenda to which he has been linked, but climate action didn’t stop then and it will not stop now.

Other players, notably China, are increasingly moving into a leadership position on the issue, because of the strategic policy and economic interests it advances. The European Union is moving ahead with its green economic development agenda despite a rightward shift in the balance of power across the EU27 – with action on the climate emergency driving the economic development needed for this region of 350 million people.

The US, if Trump does enact the changes he has campaigned on, will find itself falling behind on new technologies and markets.

How damaging the second Trump presidency is to climate action depends very much on how other countries react. If many follow Trump in either rolling back – or slowing down – their action, the damage will be severe, long-lasting and difficult to overcome.

On the other hand, if countries stick together and, as they should, deepen their commitments aligning with the Paris agreement’s 1.5C limit, the damage will be significant but not severe.

In Australia we’re on the frontline of climate impacts and damages. The Great Barrier Reef has suffered enormous damage with increasingly frequent bleaching. Forests in Western Australia have experienced browning and dieback at an unprecedented scale due to extended drought and heat.

We know that the climate crisis and its impacts on our neighbours is one of our most serious security threats – although it’s not one that our government wants to particularly talk about.

The Australian government, especially given its intention to host COP31, must play a strong diplomatic role to help ensure the fallout from the second Trump presidency is limited, and that international domestic action everywhere else continues to move ahead.

This requires leadership. The government must step up and work with other like-minded countries to bring together a coalition prepared to move forward on climate. And it needs to move forward itself.

There is no time to waste on this. COP29 starts in Baku in a few days and real leadership will be needed urgently to maintain the momentum needed to get agreement on the difficult issues that need to be solved to maintain action globally.