Business resilience and climate risk: making the transition an operational discipline

Climate risk is now a first-order business risk. Physical events — floods, heat, storms, drought — disrupt operations, supply chains and asset values. Transition risk — policy, technology, market — reprices whole sectors within short horizons. Under CSRD/ESRS E1, ISSB IFRS S2 and prudential regimes for banks and insurers, companies must disclose both categories, quantified where possible.

The two categories

Physical risk

• Acute — extreme weather events, floods, wildfires, storms.
• Chronic — sea-level rise, chronic heat, water stress, biodiversity loss.

Transition risk

• Policy and legal — carbon pricing, disclosure regimes, litigation.
• Technology — obsolescence of high-carbon technologies.
• Market — shifts in consumer preference and investor allocation.
• Reputation — stakeholder scrutiny, brand damage.

Assessment approach

Standard practice follows the TCFD structure (now embedded in ESRS E1 and ISSB S2):

1. Governance — board oversight, executive accountability.
2. Strategy — resilience of the business model under multiple climate scenarios.
3. Risk management — integration into ERM.
4. Metrics and targets — quantified exposure and reduction goals.

Scenario analysis is required — typically a 1.5°C, a "current policies" (~2.5°C+) and a hot-house (~3°C+) pathway, over both short (5-year) and long (2050) horizons.

Quantifying financial effects

ESRS E1 introduces anticipated financial effects disclosures — the expected impact of material physical and transition risks on financial performance and cash flow. Approaches:

• Asset-level exposure mapping (physical).
• Portfolio stress testing against carbon-price trajectories (transition).
• Insurance and hedging cost trajectories.
• CapEx alignment (green vs stranded).

Operational resilience

Beyond disclosure, resilience is an operational programme:

• Site vulnerability mapping for physical assets.
• Supplier due diligence on high-risk locations.
• Business continuity plans updated for climate scenarios.
• Insurance strategy — recognising the shrinking insurable perimeter.
• Transition plan integration — resilience is a function of the decarbonisation strategy.

For banks

Climate risk translates into credit, market and operational risk on the balance sheet. The ECB, BoE and other supervisors now conduct climate stress tests. Banks must integrate climate into credit assessment, collateral valuation and capital adequacy.

Reporting

• ESRS E1 — physical and transition risks, financial effects, resilience analysis.
• ISSB IFRS S2 — same structure, financial-materiality lens only.
• Pillar 3 ESG — for EU banks under CRR.