From 1.5°C to 2°C? Banking Alliance Shift Raises Trust and Regulatory Questions

The UN-backed Net-Zero Banking Alliance (NZBA) has officially voted to loosen its core climate commitment, moving from a clear alignment with the Paris Agreement’s 1.5°C warming target to a more flexible "well below 2°C" threshold. The decision marks a significant shift in the direction of global sustainable finance goals.

The resolution was supported by 90% of member banks that participated in the vote. Although NZBA emphasized that 1.5°C remains its "guiding star," the alliance stated that slow decarbonization progress in the real economy requires a more pragmatic and flexible pathway.

“We are in a critical decade for climate action, and we need all sectors - including banking and finance - to drive meaningful decarbonization,” said NZBA Chair Shargiil Bashir, who also serves as Chief Sustainability Officer at First Abu Dhabi Bank. “In 2021, we believed certain goals were achievable, but in reality, some sectors have failed to transition as expected, with technological advances and policy support lagging behind initial assumptions.”

Real-Economy Challenges Undermine Net-Zero Pledges

According to NZBA, the transition of high-emitting sectors such as construction, aviation, and real estate has fallen well short of expectations, creating growing difficulties for banks trying to implement climate-aligned lending strategies. Political headwinds and anti-ESG sentiment in key markets like the U.S. and UK have further complicated banks’ climate efforts.

“Many financial institutions made net-zero pledges, only to realize in practice that these are immensely complex coordination challenges involving cross-sectoral, cross-border supply chains and regulatory integration,” said Simon Hallett, Head of Climate Strategy at UK consultancy Cambridge Associates.

Major banks including HSBC, Morgan Stanley, and Wells Fargo have already publicly revised their net-zero pathways, citing limitations posed by the policy environment and real-economy conditions.

Sustainability Advocates Warn of “Eroding Credibility”

The decision has drawn criticism from climate advocacy groups. Jeanne Martin, Joint Head of Corporate Engagement at UK-based ShareAction, commented: “At a time when we’re witnessing unprecedented droughts and floods, it is deeply disappointing that banks are choosing to dilute their 1.5°C commitments. Every 0.1°C of additional warming represents significantly greater financial risk.”

Globally, only about 30% of high-emitting companies have published 1.5°C-aligned transition plans. If the financial sector also eases its standards, it could severely undermine global climate governance efforts.

Legal and Regulatory Risks on the Rise

Beyond credibility concerns, relaxing the 1.5°C target may also expose banks to increased legal risk. Becky Clissmann, a climate law expert at international law firm Ashurst, warned: “If banks can’t provide a clear and convincing scientific or policy rationale for stepping back from 1.5°C, they could face legal challenges in court.”

Clissmann added that courts tend to value consistency and justification in corporate commitments. A sudden reversal without reasonable explanation may violate fiduciary duties or disclosure obligations.

From Target-Setting to Practical Implementation?

In response to external criticism, NZBA leadership framed the decision as a shift from goal-setting to actionable implementation. The alliance pledged to provide members with more practical tools and guidance, including sectoral decarbonization pathways, capacity-building webinars, and more flexible carbon market frameworks and accounting for “avoided emissions.”

“NZBA has a unique position to help member banks navigate the net-zero transition with actionable support,” said Bashir.

Where Is Green Finance Headed Next?

While the alliance insists it remains committed to net-zero, the vote has undoubtedly raised alarm bells in the climate finance community. Without clear target benchmarks, banks may delay their phase-out of high-carbon sectors or even reallocate financing in less climate-aligned directions.

For institutional investors and financial regulators, this development will serve as a key signal: if climate targets can be easily altered, the credibility of voluntary corporate commitments may erode - potentially requiring stronger regulatory intervention.

In recent years, regulators in the EU, U.S., and across Asia have begun implementing climate disclosure and risk management standards for financial institutions. Should the NZBA continue its shift away from firm climate targets, it may only accelerate the tightening of regulatory oversight.