Climate Stress Testing and NGFS Scenarios for GCC Banks

Introduction

How much would a disorderly energy transition, or a future of intensifying heat and water stress, actually cost a Gulf bank? The honest answer for many is: we don’t know yet. Climate stress testing is how they find out — modelling how transition and physical climate risks could hit the portfolio under different futures. With the CBUAE regulation now requiring scenario analysis, it has moved from good practice to supervisory expectation. This article explains it.

What climate stress testing does

Climate stress testing translates climate pathways into financial impacts. It assesses two distinct risk types:

Risk type	What it captures
Transition risk	Policy, technology and market shifts to a low-carbon economy — e.g. stranded assets, carbon costs
Physical risk	Acute and chronic climate impacts — heat, water stress, extreme events

For each, the exercise models how the risk flows through to credit, market and other exposures, and ultimately to capital.

NGFS scenarios

The standard reference is the Network for Greening the Financial System (NGFS) scenario set, used by central banks and financial institutions worldwide. The scenarios span a range of futures:

• Orderly — early, smooth transition to net zero.
• Disorderly — late, abrupt transition with higher costs.
• Hot-house world — little action, severe physical risk.

For the GCC, these are typically supplemented with region-specific overlays — the Gulf’s heat, water and oil-economy exposures differ from the global average.

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A climate stress test that does not feed ICAAP is an academic exercise. One that does is the start of actually managing climate risk.

Why it matters for GCC banks

GCC banks face a distinctive climate-risk profile: heavy exposure to carbon-intensive sectors on the transition side, and acute physical exposure — extreme heat, water scarcity, coastal risk — on the other. The CBUAE regulation requires scenario analysis and stress testing to identify these risks, and the rest of the region is moving the same way. Done well, and integrated into ICAAP, it turns climate from an unquantified unknown into a managed risk.

How ESGweise helps

ESGweise builds climate stress-testing capability for GCC banks — designing NGFS-aligned scenarios with GCC overlays, modelling transition and physical risk, and integrating the results into ICAAP and risk management. See our strategy and reporting practices and our work with banking and financial services.

Conclusion

Climate stress testing is how a GCC bank turns climate from an assumption into a number — modelling transition and physical risk through NGFS scenarios, with region-specific overlays, and integrating the results into ICAAP. Now a CBUAE expectation, it is becoming standard. The banks that do it properly — and act on the results — will understand their climate exposure before it surprises them.