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Climate scenario analysis is rapidly becoming a core component of sustainability disclosures., yet it is not just about disclosure. It is a key tool for organisations to assess climate-related risks and opportunities and understand their overall strategic climate resilience.
For example, a UK housebuilder runs scenarios against 1.5°C and 3°C warming pathways. Under the high-warming scenario, it models increased flooding risk across its land bank and discovers 18% of pipeline sites fall in areas likely to be unmortgageable by 2040. It reprioritises land acquisition before values collapse.
A food and beverage manufacturer models water stress scenarios across its agricultural supply chain. Under a scenario with weak climate policy, carbon pricing on fertilisers and drought-driven crop failures in key growing regions push input costs up 35%. The company uses this to justify long-term contracts with regenerative farmers in more resilient geographies which turns risk insight into a procurement strategy.
Scenario analysis features in various disclosure frameworks based upon standards from the International Sustainability Standards Board (ISSB) - such as IFRS S2 - and has been part of the Task Force on Climate-related Financial Disclosures (TCFD) and EU’s Corporate Sustainability Reporting Directive (CSRD).
The UK Sustainability Reporting Standards (UKSRS) are expected to place increased emphasis on scenario analysis to link climate-related risks and opportunities to future financial performance. The intention is to give investors, lenders, and other stakeholders clearer insight into how climate exposure could impact revenue, costs, and asset values over time.
At its core, climate scenario analysis explores how a business might perform under different warming scenarios and time horizons (see left). It typically includes a lower global warming pathway such as 1.5°C alongside higher warming scenarios.
The process offers a structured way to assess physical climate risks, such as weather-related supply chain disruption, and transitional climate risks linked to potential changes in policy, markets, and technology.
However, treating it primarily as a compliance exercise limits its strategic value. Used effectively, it can strengthen long-term resilience by informing risk management and shaping critical business decisions.
Interpreting what climate scenarios will mean in practice is complex as impacts vary by geography, industry sector, and even different sites of the same organisation in the same country. Unravelling this complexity requires detailed understanding of how the business operates, as well as climate science.
A logistics company, for example, might face physical risks from increased flooding on key distribution routes, transition risks from rising fuel costs under a carbon pricing regime, and market risks as clients shift to lower-emission suppliers. Linking these exposures to financial performance means tracing how route disruption affects delivery times and contract retention (revenue) and how the residual value of a diesel vehicle fleet depreciates faster in a rapid-transition scenario (asset values).
While quantitative modelling is the gold standard to estimate financial impacts, many organisations begin with simpler qualitative assessment. As IFRS S2 states, companies can “select an approach to scenario analysis that is commensurate with [their] circumstances” and “consider all reasonable and supportable information available…without undue cost or effort”.
Starting with qualitative analysis allows risks and opportunities to be identified, prioritised, and understood, enabling more targeted investment in advanced analysis that quantifies impacts.
Scenario analysis can fall short when it becomes a modelling exercise in isolation. Outputs may describe potential impacts without clarifying what they mean for operations, financial performance, or strategy.
For example, a retailer might produce a beautifully constructed report showing that a 2°C warming pathway increases supply chain disruption risk by 2050, but if that finding isn't connected to procurement and sourcing strategy, it sits in a drawer. The numbers exist, but the ‘so what’ doesn't.
A further challenge lies in the need for a holistic view of the business, which may include multiple sites, a high number of assets, and complex value chains. Without expert input from relevant business functions, it can be difficult to build a complete picture.
The inherent flexibility of frameworks such as IFRS S2 can also present challenges. Where guidelines call for ‘proportionate’ analysis, it can be difficult to determine how far to go.
So, a housing association with limited in-house resource might reasonably start with qualitative assessment, mapping which of its properties sit in flood-risk zones and what that could mean for insurance costs, without building a full financial model. A listed infrastructure fund, by contrast, managing long-dated assets across multiple geographies, would likely need quantitative modelling from the outset to satisfy investors and auditors that material risks are properly valued.
To avoid scenario analysis becoming disconnected from business decisions, senior management and boards should integrate it with strategic planning. It is most effective when used across the organisation to understand risk, identify opportunity, and support more resilient business strategy.
Effects of climate change can vary locally across factors such as flood risk and temperature extremes. Interpreting what these changes mean at the organisational level demands a detailed view of how the organisation operates.
This typically involves assessing individual sites, such as a manufacturing plant in a flood plain or a data centre facing chronic water stress, as well as assets that keep operations running: equipment, vehicle fleets, or refrigeration systems vulnerable to extreme heat.
It also means cross-referencing climate risks with the corporate risk register. For example, a food producer might already have a supply chain disruption risk in its risk register. Scenario analysis could reveal that drought in a key sourcing region makes that risk significantly more likely to materialise.
Supply chains, investment portfolios, and dependencies on natural resources can all introduce climate-related risk or opportunity. Reliance on international suppliers may expose a business to disruption from trade measures, while scarcity of key inputs such as water or raw materials may affect both cost and availability.
In Australia, mandatory climate disclosure requirements are already being implemented. Our experience working with organisations in this market illustrates the value of linking climate scenario analysis outputs with strategy and decision-making.
Identifying physical and transition risks across operations, assets, and supply chains while also considering emerging opportunities can support investment choices, shape product and service strategy, and guide resource allocation. Engaging with senior stakeholders is a key part of the process, so findings are understood and acted upon at board and executive level.
The lesson for UK organisations is clear. As reporting expectations increase, companies with practical, decision-focused approaches to scenario analysis will be in a strong position to meet regulatory requirements and respond proactively to a changing risk landscape.
While the UKSRS is still taking shape, there is a need to understand how climate-related disruption could impact revenue, operating costs, and asset values. Scenario analysis can support this, but not if it’s treated as a standalone exercise. The real value lies in its integration with risk management, financial planning, and strategy development.
Organisations that treat climate scenario analysis as a compliance exercise are missing the full value that it can deliver. Those that embed it into decision-making will be better equipped to navigate uncertainty, strengthen resilience, and achieve a stronger competitive stance for the future.
Peter Watts is director of Watts Sustainability, a consultancy specialising in sustainability and ESG strategy, climate and net-zero delivery, and training and green skills development.
Dee Davison, is principal consultant at Watts Sustainability
