Weather-related operating costs contributed to an earnings miss at one major multi-site Australian retailer – downgraded earnings-per-share forecasts followed, and analysts revised their price targets downward, producing a double-digit share price decline. The striking part isn’t that extreme weather affected a business. It’s that boards routinely schedule physical climate risk for a future governance cycle while the costs are already turning up in audited results.
Consecutive seasons of floods, storms, heatwaves and bushfire conditions have been flowing through profit and loss statements via higher operating costs, damaged assets and disrupted trading – not as projections, but as recorded financial outcomes. The governance imbalance sitting behind that pattern is structural. Most board climate effort has concentrated on transition risk – decarbonisation pathways, emissions reporting, policy and reputational positioning – while physical risk has accumulated alongside it as underanalysed financial exposure. Australian Accounting Standards Board (AASB) S2 is changing that calculation, requiring Australian companies to conduct climate-related scenario analysis and to disclose the current and anticipated financial effects of climate-related risks across a phased rollout already under way. Boards that built strong frameworks for transition risk while deferring the physical side are finding that the regulatory gap is closing faster than the analytical one.
Why Physical Risk Keeps Losing the Governance Competition
Transition risk dominates board climate agendas because it arrives with legible triggers: a new disclosure rule, a customer net-zero deadline, an announced carbon price. Each can be converted into a governance item with milestones and assigned ownership. Physical risk doesn’t cooperate. It’s probabilistic, location-specific and distributed across asset classes and time horizons, without a single regulatory date to organise the analysis around. Flood risk at one facility, heat stress at another, bushfire exposure on a project corridor – none of that compresses usefully into a single ‘climate’ line in the risk register.
That difficulty shows up in what companies actually produce: an investor-led review of ASX200 climate reporting by the Australian Council of Superannuation Investors found that physical climate risks were commonly described narratively rather than quantified in terms of potential financial impacts, signalling that boards treat them as harder to translate into decision-ready numbers than transition commitments.
Part of this reflects a governance instinct that’s difficult to argue with on its own terms. Transition risk responds to board resolutions – alter capital allocation, set emissions targets, restructure procurement, redirect supply chains. Directors can act, assign accountability and monitor delivery. Physical climate risk doesn’t offer that feedback loop. No resolution can slow the intensification of heatwave frequency or redirect where the rain falls. A board can influence what it does about physical exposure, but not the exposure itself – which makes it the less satisfying governance problem and, reliably, the less resourced one. There’s something almost rational about prioritising risks that respond to decisions over risks that don’t; the trouble is that the second category still ends up in the accounts.
Investors have made that asymmetry more expensive to maintain. Quantified disclosure of physical climate risk is now an explicit expectation in analyst and institutional investor reviews, and climate risk capability is being positioned alongside finance functions rather than inside sustainability reporting teams. Regulatory mandates worldwide have reframed climate reporting as a core financial obligation – and it’s worth being clear about what that reframing does and doesn’t accomplish: it changes the governance response, but not the underlying accumulation of costs that was already in motion.
Already on the Balance Sheet
Physical climate hazards reach financial statements through a set of familiar channels: higher insurance premiums and deductibles as hazard frequency and severity increase; unplanned maintenance and repair after floods, storms or heatwaves damage buildings, plant and equipment; inventory write-offs when stock is spoiled or delayed through disrupted supply chains; workforce safety liabilities and productivity losses in extreme heat or hazardous conditions; and impairment charges when property, plant and equipment are damaged or when expected asset lives must be reassessed under escalating exposure. Trading interruptions reduce revenue without cutting fixed costs, squeezing margins even when headline demand is stable. For organisations with large, geographically dispersed networks, these are not hypothetical future vectors – they are the categories through which physical climate risk is already being recognised in the profit and loss statement and on the balance sheet.
Insurance is often the first of these channels to move because it reprices future exposure before most other costs become visible. As underwriters incorporate claims experience and forward-looking hazard data, premiums and deductibles rise, or cover is constrained for assets in higher-risk locations. “What we are seeing is that, collectively, extreme weather events and their growing frequency and intensity are having an impact on all premiums,” said Matthew Jones, General Manager of Public Affairs at the Insurance Council of Australia, describing how insurers are already adjusting pricing in response to climate-related events. Insurers, it turns out, are not waiting for boards to complete their scenario workshops before pricing in what claims history has already shown them. For boards, that means insurance lines are live signals of monetised physical risk, not background administrative costs.
When acute events escalate, they can move from individual cost lines to balance-sheet stress with little warning. PG&E’s wildfire exposure illustrates how quickly this occurs. In a company press release on major wildfire-related settlements, PG&E stated that it commenced Chapter 11 cases on 29 January 2019 and described a settlement valued at approximately $13.5 billion to resolve certain wildfire-related individual claims. The jurisdiction and industry are different from the Australian context, but the transmission pattern is the same: physical events generating large, specific liabilities that test an organisation’s capital structure rather than just its operating budget.
The appropriate financial management response involves systematically identifying and quantifying weather-related cost categories – insurance, maintenance, inventory, workforce, impairment – and embedding them into earnings guidance, scenario analysis, capital planning and the communications directed at boards, investors and analysts. Without that discipline, physical climate risk sits as unrecognised exposure rather than a managed financial variable. Stephen Harrison, Chief Financial Officer of Woolworths Group Limited, operates at the point where weather-related hazards across supermarkets, liquor stores and other consumer formats are translated into financial outcomes. The Group generates around AU$1.6 billion in net profit on AU$5.2 billion of equity – an earnings profile whose valuation is closely scrutinised by analysts. Consecutive seasons of floods, storms, bushfire conditions and heatwaves across its store and distribution network activate each of those channels simultaneously – lifting operating expenses, impairing property, plant and equipment, disrupting trading days and supply chains, and triggering potential reassessment of asset lives. Harrison’s role is to identify and quantify these impacts, embed them into earnings guidance, scenario analysis and capital planning, and communicate the implications to the board, investors and analysts. When weather-driven operating costs contribute to an earnings miss, downgraded earnings-per-share forecasts follow – and with them, a double-digit share price decline and lower analyst price targets. Physical climate risk is already a core financial variable. The regulatory infrastructure now being built around it is new; the costs were not.
The Regulatory Forcing Function
AASB S2 doesn’t just ask organisations to acknowledge that climate risks exist – it requires them to demonstrate, through scenario analysis across at least two temperature pathways, that their strategy and business model are resilient to those risks, and to disclose the current and anticipated financial effects with quantitative information, or to explain why they cannot provide it. The standard specifies that scenario inputs should be relevant to the entity’s circumstances, including its activities and the geographic location of those activities. That last requirement matters: it is the difference between running a global model and running an analysis that tells a board something specific about its own assets, operations and balance sheet exposure. With a phased rollout applying to the first group of companies from 1 January 2025 and to subsequent groups from 1 July 2026 and 1 July 2027, AASB S2 is calibrated to push reporting away from high-level narrative and toward disclosure that is decision-useful at the entity level – a materially higher bar than most existing physical-risk disclosure practice currently meets.
Australian boards are not facing this in isolation. In December 2025, the UK’s Prudential Regulation Authority issued Supervisory Statement 5/25, requiring insurers, including participants in the Lloyd’s market, to embed physical, transition and systemic climate risks into governance, risk management, scenario analysis, capital planning and disclosures. The PRA directed firms to shift from qualitative descriptions to quantitative, forward-looking assessments informed by independent data, integrating climate scenarios into underwriting appetite, capital allocation, the Own Risk and Solvency Assessment and pricing, with an internal review and action plan due by 3 June 2026. Regulatory frameworks in different jurisdictions don’t often converge on near-identical requirements by coincidence – when they do, they’re usually mapping the same gap between stated expectations and observed practice. The PRA made its rationale explicit: “Climate change and the transition to a net-zero emissions economy create operational and financial risks for firms and economic consequences,” positioning climate squarely within mainstream financial risk frameworks rather than a separate sustainability category.
That convergence across supervisory regimes is calibrated against the same analytical deficiency: physical climate risk that is described but not quantified, acknowledged but not integrated into financial planning. Australian boards no longer have the option of treating physical risk as a disclosure topic that sits adjacent to real financial oversight. Whether the resulting scenario analysis and disclosures actually serve that standard’s intent – producing information specific, quantified and connected enough to inform decisions – is a different, and considerably more demanding, question.
The Distance Between Form and Substance
Scenario analysis is where the gap between technically meeting a standard and actually using it becomes most apparent. Running at least two temperature pathways – a 1.5°C trajectory with relatively constrained near-term physical impacts, and a pathway above 2°C with more frequent and severe acute hazards and more pronounced chronic change – looks like a methodological exercise on paper. In practice, the difference between those pathways defines the range over which capital allocation, maintenance budgets, insurance strategy and asset-management decisions must remain robust. When analysis stays at a high level, describing global conditions without tracing how specific hazard changes intersect with particular assets, supply chains or workforces, it can satisfy the structural expectations of AASB S2 while leaving day-to-day financial decisions unchanged. The disclosure is complete; the organisation’s resilience has not materially improved.
Regulators have already cautioned against this pattern. In its multi-firm review of Task Force on Climate-related Financial Disclosures (TCFD)-aligned disclosures by premium listed commercial companies, the UK Financial Conduct Authority reported that some organisations were treating scenario analysis primarily as a reporting requirement rather than as a decision tool, and in some cases did not clearly disclose the outputs of that analysis. The FCA characterised these as quality gaps that limit usefulness and comparability for investors. What that review confirmed is that the gap between adequate form and genuine substance in scenario analysis is wide enough that sophisticated regulators designed a review specifically to measure it.
What closing that gap requires in practice – granular, asset-level analysis paired with governance that can act on the outputs – is the combination that turns scenario work from a reporting ritual into a basis for decisions. Monique Chelin, a sustainability consultant and board director who founded MJC Sustainability in 2010, works with organisations across mining, infrastructure, government and major capital projects where physical asset exposure is concentrated. Her client work spans Australia, the Middle East, Asia, and the Pacific – regions where acute physical climate hazards are already affecting asset performance. When helping Australian companies prepare for AASB S2 climate disclosure, she does not begin with modelling software. The process starts with a board workshop designed to ensure decision-makers share a common understanding of the standard’s requirements and of what comparable organisations are doing. That sequencing is counterintuitive by consulting convention. Most physical climate risk engagements lead with the model; starting with the board reflects a different premise: governance readiness is a prerequisite for decision-useful analysis, not a by-product of it. She then uses a bespoke AI climate scenario analysis tool to identify and quantify physical climate risk at the level of assets and operations – work that draws on a background in applied science and law to bridge quantified hazard outputs to the accountability frameworks through which boards act.
The outputs support clearer board oversight, stronger internal understanding of climate exposure, and more decision-useful disclosure across governance, strategy, risk management, and metrics and targets. She then translates disclosure expectations into governance, accountability and business decision-making so that climate reporting functions as a risk and leadership issue rather than a communications exercise. That sequencing – governance readiness first, granular quantification second, integration into core decision-making third – directly addresses the quality gap the FCA identified: scenario work that is technically present but operationally inert.
The Balance Sheet Doesn’t Wait
Physical climate risk has been appearing in financial statements – in earnings misses traced to weather-related operating costs, in analyst downgrades and share price revisions – while governance attention was concentrated elsewhere. Boards built serious transition-risk infrastructure: targets, reporting cycles, capital planning tied to decarbonisation pathways. Physical risk accumulated alongside it, underanalysed and underquantified, which is precisely the pattern that AASB S2 and the international regulatory convergence it reflects are designed to disrupt. Disclosure obligations that require scenario analysis calibrated to specific assets, geographies and financial effects don’t eliminate the exposure – but they do eliminate the ability to carry it without accounting for it.
Organisations that continue treating physical risk assessment as a future governance priority are not delaying the exposure; they’re carrying it unquantified. The balance sheet records impairments before strategy reviews conclude. Insurers price in hazard probability long before disclosure frameworks require it. Boards that have already built rigorous governance on the transition side have the analytical discipline the physical side requires – extending it is less about learning something new than about being honest about which half of the climate governance picture has been left incomplete. That half is not the one that waits.
