29 Oct 2026 7 min read
The European Banking Authority (EBA) Guidelines on environmental scenario analysis establish a formal framework for incorporating environmental risk drivers into institutions’ assessment of financial and business-model resilience. Applicable from 1 January 2027, the Guidelines distinguish between two complementary analytical exercises: stress testing, which addresses the effects of environmental factors on capital and liquidity adequacy, and resilience analysis, which considers the capacity of the business model to remain viable under different environmental scenarios over a longer time horizon.
The Guidelines are issued under Article 16 of the EBA Regulation and are anchored in Article 87a(3) and (5)(d) of CRD VI. They also extend to Pillar 1 in relation to institutions using the Internal Ratings Based (IRB) approach, for which credit-risk stress tests are required to incorporate climate-related drivers under Article 177(2a) CRR. The framework builds on the EBA Guidelines on management of ESG risks, which have been applicable since 11 January 2026.
A central feature of the Guidelines is the distinction between the assessment of short-term financial resilience and long-term business-model resilience. Although both exercises rely on environmental scenarios, they address different analytical questions and therefore perform distinct functions within institutions’ risk-management frameworks.
Environmental stress testing incorporates environmental factors into the existing stress-testing framework. It comprises a baseline alongside severe-but-plausible adverse scenarios, requires compound risks to be examined in depth, and provides results that feed into the assessment of capital and liquidity adequacy through the Internal Capital Adequacy Assessment Process (ICAAP) and Internal Liquidity Adequacy Assessment Process (ILAAP).
Resilience analysis has a different scope. Institutions are expected to assess a reference scenario, representing their own most likely future, together with distinct alternative scenarios. Risk-adjusted profitability is projected for individual activities over a period of at least ten years, with the results informing adjustments to strategy and transition plans where the analysis identifies deficiencies.
The Guidelines also identify a set of analytical foundations applicable before either exercise is undertaken. Institutions are required to identify the transmission channels through which environmental drivers affect exposures, considering both microeconomic and macroeconomic channels and the value chain. Scenario selection should rely on credible sources, including the NGFS, IEA, JRC and IPCC, while scenarios should be adapted to the institution’s portfolio and remain internally consistent. The supporting data-collection systems are expected to be fit for purpose, while capability gaps should be addressed and expert judgement used where data are unavailable.
This structure assigns scenario analysis a broader function than the application of isolated environmental shocks. The analytical sequence extends from the identification of relevant environmental drivers and transmission channels to scenario specification and, ultimately, to their implications for financial resilience and the longer-term viability of the business model.
The Guidelines apply proportionality through differentiated methodological requirements. The appropriate depth of the analysis is determined not exclusively by institutional size, but also by the materiality of environmental risks. Consequently, smaller institutions remain within the scope of environmental scenario analysis, although the sophistication of the methods permitted varies across institutional categories.
For large institutions, the Guidelines provide for full quantitative stress testing of environmental factors. Resilience analysis may initially be performed through simplified sensitivity analysis but is expected to develop towards quantitative approaches. For non-climate environmental risks, sensitivity analysis may similarly constitute the initial methodological step.
For other institutions, sensitivity analysis is permitted for the assessment of short-term financial resilience, while long-term resilience analysis may be predominantly qualitative. These institutions are nevertheless expected to enhance their approaches gradually and continuously.
For small and non-complex institutions, both short- and long-term analyses may rely predominantly on qualitative approaches. The required depth, however, remains commensurate with risk materiality, and concentrated exposures may require more thorough analysis. Coverage is informed by the materiality assessment conducted under the EBA Guidelines on the management of ESG risks.
Proportionality therefore concerns primarily the methodological sophistication of scenario analysis rather than its applicability. Institutional classification affects the tools that may be employed, while the materiality of environmental risks determines the depth of the assessment.
The application of the scenario-analysis Guidelines represents part of a broader sequence within the EBA’s ESG risk framework. The EBA Guidelines on the management of ESG risks were published on 9 January 2025 and became applicable on 11 January 2026, including requirements concerning materiality assessment and transition plans. The environmental scenario-analysis Guidelines were finalized on 5 November 2025 as EBA/GL/2025/04, following public consultation, with competent authorities notifying compliance on 16 March 2026. Full application follows on 1 January 2027.
The interval preceding application is therefore relevant from an implementation perspective. By 1 January 2027, stress testing and resilience analysis are expected to be in place. The presentation further notes that future revisions have been flagged in relation to social and governance factors and the further development of nature-related analysis, while relevant work by the BCBS and NGFS continues to be monitored.
The practical implications of the Guidelines extend across several components of institutions’ risk-management architecture. These include transmission-channel and materiality mapping, scenario design and customization, stress-test modelling, long-term resilience analysis, ICAAP and ILAAP integration, IRB credit-risk stress testing, and governance and documentation.
Scenario design requires the selection and adaptation of sources such as NGFS, IEA and JRC scenarios to portfolio characteristics while maintaining internal consistency. Stress-test modelling incorporates sectoral and geolocation dimensions and exposure-level shocks, while resilience analysis requires reference and alternative scenarios, risk-adjusted profitability by activity, and projections over at least ten years. The latter are also considered in relation to institutions’ transition plans.
The results of environmental stress testing are subsequently incorporated into capital and liquidity adequacy assessments through ICAAP and ILAAP. For institutions using the IRB approach, the Guidelines also interact with the requirement under Article 177(2a) CRR concerning climate-related drivers in credit-risk stress testing. Governance and documentation constitute an additional component, including the use of a consistent narrative endorsed by senior management across the organization.
Taken together, these requirements establish environmental scenario analysis as a combination of short-term financial stress testing and longer-term assessment of business-model resilience. The distinction is methodologically important: the first examines the implications of environmental risk factors for capital and liquidity under adverse conditions, whereas the second evaluates activities and risk-adjusted profitability across reference and alternative scenarios over a horizon of at least ten years.
The principal implementation challenge therefore concerns the coherent connection of environmental risk drivers, transmission channels, scenario design, financial-risk impacts and strategic analysis within existing institutional processes. The proportionality framework allows the sophistication of individual methods to vary, but the materiality of environmental risks remains central to determining the appropriate depth of analysis.
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