Mark Carney’s Net-Zero Banking Alliance is done. Now what?

It’s official. Mark Carney’s Net-Zero Banking Alliance has closed its doors. The once ambitious global network to mobilize banks for the climate transition has been reduced to little more than an online collection of decarbonization reports.

But big questions remain. Does the alliance’s collapse open the gates for full-scale bank financing of fossil fuels? Or does it point to a lower-profile but possibly more effective financing path for the climate transition?

And what about bank regulation? Does the failure of this voluntary initiative validate what many non-governmental organizations have been saying for years; namely, that the banks should be compelled to invest in the climate transition through regulation?

These questions are now front and centre after the alliance – known as NZBA – closed last week, ending its existence as a membership organization and converting to an archive of banking-industry climate-target guidance.

NZBA was the flagship of the Glasgow Financial Alliance for Net Zero, former United Nations climate envoy Mark Carney’s high-profile effort to marshal the world’s largest financial institutions to reduce carbon emissions. When launched in 2021, NZBA and other financial industry networks pledged to reduce their carbon emissions to net-zero by 2050 and to align billions of dollars in assets to the climate transition.

But as banks were called upon to live up to their net-zero commitments through short-term reductions in fossil fuel lending and underwriting, many of the alliance’s leading members jumped ship. All the major United States and Canadian banks left NZBA earlier this year, followed by many European and Japanese lenders. With Carney now in the role of Canada’s prime minister, the alliance lost its key leader. Staving off anti-climate pressures and potential legal challenges in Europe, the remaining 140 NZBA members voted to formally close the organization.

“The end of the NZBA is a real loss,” writes David Carlin, a climate adviser to the financial sector. NZBA provided market signals, a community of practice and transition pathways on climate risk, Carlin argued in a blog post: “Those values do not disappear with the end of the alliance, but the collective ambition is weakened.”

‘Zombie targets’ possible

Todd Cort, sustainability lecturer with the Yale School of Management, said the banks could enter a protracted period of limbo in which they don’t drop net-zero targets, but neither will they work toward them. “What worries me is that I think there is a higher probability of zombie targets,” he told Trellis Briefing.

Collaborations such as ShareAction in Europe and the Shareholder Association for Research and Education in Canada will continue to exert shareholder pressure on banks to account for their emissions targets. Climate-dedicated investors such as New York City Pensions will continue to be key members of these coalitions. And jurisdictions like California have enacted climate legislation to provide at least some measure of accountability by banks and other companies through mandatory disclosure.

But Donald Trump’s overwhelming control of the public agenda rules out any meaningful measures to compel the banks in the United States to reduce fossil fuel lending and underwriting. This would suggest that the banks – particularly those in North America – are getting ready for years of full-throated support of coal, oil and gas. After two years of decline in fossil fuel financing, the global banking industry reversed course in 2024, sharply increasing fossil loans and underwriting.

The distressing prospect that banks could enter a period of long-term financing for fossil fuels – and the impact this would have on global warming – has triggered a debate among climate and sustainability activists and researchers. Some are doubling down on public action, mounting bank protests in the United States and Europe.

But RMI (formerly known as the Rocky Mountain Institute) is taking a different approach, calling for a “recalibration” in how climate campaigners and advocates relate to the banking industry.

Banks not ‘moral agents’

In a report issued only weeks before the NZBA closure, RMI argues that the non-profit climate movement has overestimated the power of the banking industry to unilaterally direct its capital to the climate transition. “Banks are not moral agents or policy substitutes,” the report states. “They are commercial actors operating within regulatory, fiduciary and risk-based constraints.” The report says some climate advocates don’t consider the “complex, interconnected spider webs” of the banks and the economies in which they operate. “The expectation that banks (or any part of the financial sector) could drive the energy transition was myopic.”

Banks and fossil fuel companies are drawn to one another partly because lenders can extend sizable loans to oil, gas and coal companies based on their healthy balance sheets. This enables banks to issue credit without committing large amounts of their own capital under lending regulations. By contrast, low-carbon projects such as renewable-energy facilities typically require project financing, representing greater regulatory and financial risk to the banks. In addition, private equity, asset managers and pension funds can provide ownership financing to these projects that is not an option for most banks.

Given such limitations, RMI argues that civil society organizations should shift their focus from confronting the banks on climate targets to engaging with them on specific low-carbon transactions, such as clean power, green steel, zero-carbon homes, methane abatement and renewable fuel projects.

“What we need now is less choreography and more closing of deals,” says Kaitlin Crouch-Hess, senior principle for RMI’s newly formed Center for Climate-Aligned Finance. “We can get capital flowing by recognizing banks’ commercial role and playing to their strengths,” she says in an email statement. “Where the economics do not add up, we must work across the financial, policy and corporate systems to align policy and risk-sharing.”

Fossil risk buffer needed

While RMI’s new approach is aimed at boosting the low-carbon economy, it doesn’t address the large climate risk posed by bank-financed fossil fuel projects.

Last month, sustainable investment advocate Finance Watch issued a report showing that the 60 largest banks in the world carry more than US$1.6 trillion in credit exposure to coal, oil and gas. Finance Watch argues that as the world electrifies and decarbonizes, this large fossil-industry exposure poses a major risk to the banks as the value of fossil assets supporting loans could decline sharply and suddenly. “Banks have more than a trillion dollars of exposure to mispriced fossil fuel assets,” Julia Symon, head of research and advocacy at Finance Watch, said in a statement. “This is a carbon bubble that could burst, like subprimes in 2008. This risk is not properly recognized and banks are not prepared.”

Finance Watch argues that the European Central Bank (ECB) should impose a climate risk buffer (a requirement that additional bank capital be set aside for fossil loans). Banks with more fossil fuel credit on their books would be required to maintain a larger capital reserve, shoring up their stability in the event of a crash in fossil assets. Finance Watch is urging the ECB to impose such a buffer as part of a current review by the central bank on risks to the financial system posed by environmental issues.

While it’s unlikely that the Trump administration would permit such a climate risk buffer to be imposed in the United States, it’s expected that financial regulators in other countries would follow ECB’s lead. Global adoption could also pave the ground for a similar measure in the United States after Trump’s term comes to an end.

The end of NZBA is not good news, but it shouldn’t signal an end to climate action by the banks. Advocacy organizations could engage with the banks on important decarbonization projects and policy supports while also challenging them to achieve their net-zero targets.

At the same time, financial regulators can send a clear signal to the banks that fossil fuel lending is risky. If banks choose to lend to the industry, regulators should ensure they’re going to have to commit more of their own money to do it.

Eugene Ellmen writes on sustainable business and finance. He is a former executive director of the Canadian Social Investment Organization (now the Responsible Investment Association).