C4 Climate Risks: Physical and Transition Risk Without an Overbuilt Scenario Model

Technical status note. The Commission adopted C(2026) 5011 final on 3 July 2026. As at 1 August 2026, the delegated act was under European Parliament and Council scrutiny and had not yet completed the process leading to application. Recheck the Official Journal version, entry into force and any corrections before publication or client use.

Use note. This material separates requirements in the 2026 Voluntary Standard from London Reporting Academy implementation practices and illustrative wording. It does not replace the official text, legal analysis or entity-specific review.

A generic climate-risk list is easy to produce: flood, heat, carbon prices, customer expectations and new technology. It is also easy to ignore because it does not show where the undertaking is exposed or how the issue could affect operations. An overbuilt model can create the same problem in a more technical form if inputs are weak, asset locations are incomplete or the analysis is disconnected from management decisions.

C4 is more useful when it starts with the business model and operating facts. A cold-storage facility with ageing refrigeration, a supplier in a drought-exposed region or a product line dependent on carbon-intensive materials provides a concrete assessment unit. This allows risk, action and evidence to be linked even before advanced quantification is available.

The undertaking briefly describes climate-related hazards and transition events that create material climate-related risks for the undertaking.

For physical risks, it considers the exposure and sensitivity of assets, activities and the value chain to climate-related hazards and events.

The description uses the Standard's short-, medium- and long-term time horizons.

The undertaking briefly describes adaptation actions it has taken or plans to take.

The undertaking may disclose qualitative adverse financial or operational effects and classify them as high, medium or low.

A universal list of climate hazards or a copy of a sector heat map without company-specific assessment.

A fully quantified scenario model, climate value-at-risk calculation or stress-test engine.

A precise monetary figure where the data and decision process do not support one.

A statement that every climate event is a material risk simply because it appears in a public dataset.

The naming of confidential suppliers or locations where category-level or aggregated wording can satisfy the information need.

A claim that planned adaptation action has eliminated the risk unless residual-risk evidence supports that conclusion.

Figure 1. A proportionate assessment converts a hazard or transition event into an entity-specific risk through exposure and sensitivity.

Use the Standard definitions in the disclosure even if internal risk management uses additional bands. An internal horizon can be mapped to the Standard, but the mapping and any difference should be documented.

Paragraph 57 allows the undertaking to describe adverse financial or operational effects qualitatively as high, medium or low. The scale should be defined internally and applied consistently. It should not imply quantified certainty that the assessment does not possess.

Implementation control. Define “high”, “medium” and “low” before applying the labels. A possible first-year scale can combine the importance of the affected operation with the expected severity and management capacity. The scale is an internal method, not a Standard-prescribed scoring formula.

Figure 2. The first-year critical path prioritises scope, company-specific exposure, time horizon, action and disclosure before optional scenario sophistication.

A site, asset or supply route has high exposure and the decision depends on different hazard intensities or time paths.

A major investment, relocation, technology choice or contract needs resilience testing.

A lender, insurer or customer needs a coherent sensitivity discussion that cannot be answered by the base case alone.

Management wants to challenge whether planned action remains effective under more severe or faster transition conditions.

A lightweight scenario design

Do not describe a scenario as a forecast or probability unless the method supports that claim. The purpose is to challenge resilience and decisions, not to predict the exact climate or policy outcome.

Why the wording is useful

It identifies the exposed operation and the reason it is sensitive.

It uses the Standard time horizons rather than an undefined “future” period.

It links qualitative effect ratings to an internal scale and specific channels.

It describes actions and residual risk rather than implying that action removes exposure.

It states the limitation: the disclosure is qualitative and not a probability forecast.

Must C4 include both physical and transition risks?

The undertaking should screen both types and disclose those that create material climate-related risks. A conclusion that one type is not material should be supported by the assessment rather than assumed from sector labels.

Can we use high, medium and low without financial amounts?

Yes. Paragraph 57 permits qualitative adverse financial or operational effects using those categories. Define the scale and retain the rationale; do not imply a precise probability or monetary value that has not been assessed.

Can a customer-procurement requirement be a transition risk?

Potentially. It should be framed as a specific market or customer transition event affecting an identified product, revenue stream or tender process, with evidence and timing.

Do we need a climate scientist?

Specialist input may be necessary for material location-specific or engineering conclusions. A first screen can be undertaken internally, but high-risk conclusions should use competent data and expertise appropriate to the decision.