32  Climate Risk as a Business Issue

ImportantLearning Objectives

You will be able to:

  1. Distinguish physical, transition and liability risk, and identify the sub-types of each.
  2. Explain why climate risk defeats conventional planning horizons and risk registers.
  3. Explain the purpose of scenario analysis and how it differs from forecasting.
  4. Describe the four-part structure through which climate risk is governed and disclosed.
  5. Assess a company’s climate exposure and evaluate its implications for long-term value.

32.1 Introduction

Chapter 29 listed climate among the environmental issues a company may need to manage. This chapter treats it separately because it behaves differently from other environmental issues in three ways that matter to a manager.

It is systemic: it affects every sector and every geography simultaneously, so it cannot be diversified away in the manner of a firm-specific risk. It is non-linear: the relationship between cause and consequence is not proportional, and thresholds exist beyond which change is rapid. And it arrives on two clocks, one physical and slow, one policy-driven and capable of moving in a single budget (Anne T. Lawrence & James Weber, 2020).

For an Indian business the subject is not abstract. Monsoon dependence, water stress in industrial basins, heat affecting labour productivity and equipment, coastal exposure of ports and facilities, and a grid with a substantial coal share all mean that both the physical and the transition sides are live, and often for the same firm at the same time.

flowchart TD
    A["<b>Climate risk</b>"] --> P["<b>Physical</b>"]
    A --> T["<b>Transition</b>"]
    A --> L["<b>Liability</b>"]
    P --> P1["<b>Acute</b><br>flood, cyclone,<br>heatwave, drought"]
    P --> P2["<b>Chronic</b><br>temperature, water<br>availability, sea level"]
    T --> T1["<b>Policy and legal</b><br>carbon pricing, mandates,<br>disclosure, bans"]
    T --> T2["<b>Technology</b><br>substitution, stranded<br>assets, capability gap"]
    T --> T3["<b>Market</b><br>customer requirements,<br>input costs, demand shift"]
    T --> T4["<b>Reputation</b><br>licence, capital access,<br>talent"]
    style P fill:#e3f2fd,stroke:#1976D2
    style T fill:#fff8e1,stroke:#F9A825
    style L fill:#ffebee,stroke:#C62828

32.2 The Three Kinds of Risk

32.2.1 Physical Risk

Physical risk is the effect of the changing climate on assets, operations, people and supply.

Acute risks are event-driven: flooding, cyclones, extreme rainfall, heatwaves and drought. They affect a specific site on a specific day, and their business consequence runs through damage, interruption, employee safety, and the cost and availability of insurance.

Chronic risks are gradual: rising average temperature, changing precipitation patterns, declining groundwater, sea level rise. Their consequences are less visible and often larger: reduced labour productivity in heat, higher cooling loads, reduced water availability for process use, changed agricultural yields affecting agricultural input supply, and progressive deterioration of coastal assets.

Two features of physical risk are consistently underestimated. It concentrates in the supply chain rather than in owned assets, because a firm has visibility of its own sites and rarely of its suppliers’ locations. And it is correlated: a flood affects a plant, its workers’ homes, the road that serves it and the local supplier simultaneously, which is exactly what a risk register listing them as separate entries fails to capture.

32.2.2 Transition Risk

Transition risk is the effect of the move to a lower-carbon economy, and it arrives faster than physical risk.

Type How it appears
Policy and legal Carbon pricing, emissions standards, efficiency mandates, disclosure requirements, restrictions on products or processes, border adjustment mechanisms affecting exports
Technology A lower-carbon substitute becoming cheaper, rendering existing assets uneconomic before the end of their accounting life, and leaving a firm without the capability to compete
Market Corporate customers imposing requirements down the chain, shifting demand, changing relative input costs
Reputation Effects on licence to operate, on access to capital, and on the ability to attract people

The concept of a stranded asset belongs here and deserves precision. An asset is stranded when it suffers premature write-down or conversion to a liability because of changes in the market or regulation. The risk is not that the asset stops working; it is that it stops being economic while the balance sheet still carries it. A twenty-five year plant financed on a twenty-five year assumption in a sector facing a ten year transition has a mismatch that appears in no risk register.

32.2.3 Liability Risk

Liability risk is exposure to claims. It runs along three lines: claims for harm caused by emissions or by failure to adapt, claims for failure to disclose material climate exposure to investors, and claims against directors for failing to consider the risk. The second and third are the more immediate for most managers, and they connect directly to Chapters 27 and 12: a material risk not disclosed is a disclosure failure, and a risk a board never considered is a question about the duty of care.

32.3 Why Climate Defeats Conventional Planning

WarningCommon Misconception: Climate Risk Is a Long-Term Issue, So It Can Wait

Three properties make the wait argument wrong even for a manager whose horizon is genuinely short.

The horizons are mismatched, not distant. Physical consequences build over decades, but the decisions that determine exposure are taken now, because a plant, a boiler, a fleet or a long-term supply contract commits a firm for its asset life. A decision taken this year on a twenty-year asset is a decision about the 2040s whether or not anyone framed it that way.

Transition risk moves on a policy clock. A carbon price, an efficiency standard, a procurement rule or an import requirement can change in one budget or one customer’s supplier policy. Firms are routinely surprised not by the climate but by the response to it.

The market prices anticipation. Investors and lenders act on expected future exposure, so the financial consequence arrives long before the physical one. A company can face a higher cost of capital for an exposure that will not materialise for fifteen years.

The correct statement is that climate risk has long-dated physical consequences and near-dated financial ones, and it is the second that reaches a manager first.

Conventional risk registers handle it badly for structural reasons. They assess risks individually, and climate risks are correlated. They use a probability and impact grid calibrated to the planning cycle, and climate impacts fall outside it. They assume a stationary distribution, so historical frequency guides estimation, and that assumption is precisely what is failing. And they assign each risk to a functional owner, whereas climate exposure crosses operations, procurement, finance, strategy and compliance at once.

32.4 Scenario Analysis

The instrument developed to address these problems is scenario analysis, and its purpose is widely misunderstood.

A scenario is not a forecast. It is an internally consistent description of a possible future, constructed so that a firm can test whether its strategy holds under conditions different from the ones it assumes. The question a scenario answers is not what will happen but what would break, and how much warning the firm would have.

NoteHow Scenario Analysis Works
Step What it involves
Choose scenarios Typically at least one in which transition is rapid and policy is stringent, and one in which it is slow so that physical impacts are larger. Both are needed, because they stress different parts of the business
Define the parameters For each scenario, the specific variables the business is sensitive to: carbon price, energy cost, water availability, customer requirements, temperature and extreme event frequency in the locations that matter
Apply to the business Trace each parameter through to the operations, assets, supply chain, demand and cost base, over stated time horizons
Identify the breaking points Where does the strategy fail, which asset becomes uneconomic, which site becomes unviable, which customer requirement cannot be met
Decide what changes now Which decisions must be taken today because of lead time, and which can be deferred with a defined trigger for revisiting

The output that matters is the last row. A scenario exercise that produces a report and no change to a capital plan, a siting decision, a supplier strategy or an asset life assumption has not been used.

32.5 Governing and Disclosing Climate Risk

Climate disclosure has converged internationally on a four-part structure, and Indian reporting reflects the same logic (Securities and Exchange Board of India, 2021).

Element What it requires
Governance The board’s oversight of climate risks and opportunities, and management’s role in assessing and managing them
Strategy The risks and opportunities identified over short, medium and long term, their effect on business, strategy and financial planning, and the resilience of the strategy under different scenarios
Risk management How climate risks are identified, assessed, managed, and integrated into overall risk management
Metrics and targets The metrics used, emissions by scope, and the targets set with baselines and dates, and performance against them

India’s international position under the Paris Agreement frames the policy clock for domestic firms (United Nations Framework Convention on Climate Change, 2015), and national commitments on emissions intensity, non-fossil capacity and net zero determine the direction of the regulatory pressure a manager should expect.

TipPractitioner Insight: Map the Sites Before Anything Else

Firms often begin climate work with a target, which is the wrong end. The first task is knowing where the exposure physically is, and most companies cannot answer that question.

Build a site and supplier map: every own facility and every material supplier facility, with location coordinates, and for each the water source and basin status, flood and cyclone exposure, grid dependence and power source, and the share of the firm’s output or input that depends on it. Add the single-source dependencies, since those are where an interruption becomes a stoppage.

Two findings almost always emerge. Exposure is concentrated in a small number of locations, so the problem is more tractable than it appeared. And the largest exposures are usually at suppliers, sometimes at a tier the firm has never mapped, which means the mitigation work is relationship work rather than capital work.

The map is also what makes scenario analysis possible, because a scenario cannot be applied to a business whose geography is unknown.

32.6 Case Studies

32.6.1 Case Study 1: The Flood That Stopped Three Things at Once

The following situation is constructed rather than reported.

A pharmaceutical formulations company operates a plant on the outskirts of a coastal city. Extreme rainfall over three days floods the industrial estate. The plant itself is on raised ground and takes minor damage. Production stops for eleven days because the approach road is impassable, roughly forty per cent of the workforce cannot reach the site as their homes are flooded, the packaging supplier two kilometres away is under water, and the effluent treatment plant overflows, triggering a regulatory notice. The company’s risk register listed flooding at the plant as a low-impact risk on the basis of the site’s elevation.

Discussion questions

  1. Identify every failure in how the risk was assessed, and name the structural feature of risk registers that produced it.
  2. Which of the four consequences would a site and supplier map have anticipated, and which would it not?
  3. The register’s assessment was correct about the plant and wrong about the business. Explain the difference and what should be assessed instead.

32.6.2 Case Study 2: The Asset With Twenty Years Left

The following situation is constructed rather than reported.

A company invests in a captive coal-fired power unit to secure reliable and cheap electricity for a new plant, with a twenty-five year design life and financing to match. Within six years, grid renewable tariffs fall below its generating cost, a state levy on captive coal generation is introduced, and its two largest export customers require suppliers to report and reduce Scope 2 emissions. The unit continues to operate reliably. The finance team notes that its carrying value assumes full life.

Discussion questions

  1. Explain precisely what stranding means here, and identify the point at which the asset became stranded.
  2. Which of the four transition risk types contributed, and in what order did they arrive?
  3. What should the original investment appraisal have contained? Write the two questions that would have surfaced this.

32.6.3 Case Study 3: The Scenario That Changed Nothing

The following situation is constructed rather than reported.

A listed company commissions a consultant to conduct climate scenario analysis. The report models two scenarios, quantifies exposure, and concludes that the company is broadly resilient with some exposure in one business. It is presented to the board, noted, and summarised in the sustainability report. The capital plan, the asset life assumptions, the supplier strategy and the siting decision for a new facility all proceed unchanged. The following year the exercise is repeated with updated figures.

Discussion questions

  1. Was scenario analysis performed? Distinguish the exercise from its purpose.
  2. What single test would tell a board whether its scenario work is real?
  3. Redesign the process so that the output reaches the decisions it should affect, naming who receives what and when.

32.7 Applying the Chapter

ImportantExercise: A Climate Exposure Assessment

Return to the textile and apparel group used in Chapters 29 and 30. Its five plants comprise two spinning units in an inland district, a dyeing and processing unit in a water-stressed basin, and two garment units near a coastal city. It draws grid power with a significant coal share and runs a coal-fired boiler at the dyeing unit for process steam. Cotton is sourced from domestic farms across three states and from traders. Half its output goes to European and North American brands, two of which have announced supplier emissions requirements with dates. It has a five-year capital plan dominated by capacity expansion at the dyeing unit. Its risk register lists climate change as one entry, rated medium, owned by the environment head.

Working in a group, produce the assessment. CO-5 requires evaluation of obligations and assessment of strategic implications for long-term value, so the deliverable is a strategic assessment ending in decisions.

  1. Build the site and supplier map. For each of the five plants and for the cotton sourcing, identify the exposures using the categories in the practitioner insight. State what you would need to find out and how.
  2. Classify the risks. Separate physical acute, physical chronic, transition policy and legal, transition technology, transition market, transition reputation, and liability. Place each identified exposure in one, and note any that belong in more than one.
  3. Test the correlation point. Identify a single event that would trigger three or more of your listed risks at once, and explain what that does to the risk register’s treatment of them as separate entries.
  4. Assess the transition clock. For each transition risk, estimate when it arrives, distinguishing what is already announced from what is anticipated. Identify which arrives first.
  5. Run two scenarios. Define a rapid-transition scenario and a slow-transition high-physical scenario. For each, state the parameters relevant to this business, trace them through operations, cost and demand, and identify the breaking points.
  6. Examine the capital plan. The plan expands the dyeing unit, which sits in the water-stressed basin and runs the coal boiler. State what your scenario work implies for that decision and what you would recommend instead or in addition.
  7. Assess the liability position. Identify what this company would have to disclose, what it currently would not, and what exposure the board carries if the risk is not considered.
  8. Recommend. Propose the decisions that must be taken this year because of lead time, the decisions that can be deferred with a stated trigger, and the governance change required, including who should own climate risk instead of the environment head.

Present a site and supplier exposure map, a classified risk table, a two-scenario breaking-point analysis, and a three-page recommendation.

32.8 Summary

NoteChapter Summary

Climate behaves differently from other environmental issues in three ways: it is systemic and cannot be diversified away, it is non-linear with thresholds beyond which change is rapid, and it arrives on two clocks, one physical and slow and one policy-driven and capable of moving in a single budget (Anne T. Lawrence & James Weber, 2020).

Physical risk divides into acute event-driven exposures and chronic gradual ones, and two of its features are consistently underestimated: it concentrates in the supply chain, where a firm has least visibility, and it is correlated, so a single event strikes the plant, the workforce, the road and the local supplier at once. Transition risk divides into policy and legal, technology, market and reputation, and arrives faster than physical risk. A stranded asset is one written down or converted to a liability because of market or regulatory change, and the risk is not that it stops working but that it stops being economic while the balance sheet still carries it. Liability risk runs to claims for harm, for failure to disclose material exposure, and against directors for failing to consider it.

The claim that climate can wait is wrong even on a short horizon. The horizons are mismatched rather than distant, since a decision on a long-lived asset today is a decision about the 2040s. Transition risk moves on a policy clock, so firms are surprised by the response rather than by the climate. And markets price anticipation, so the financial consequence arrives long before the physical one. Conventional risk registers fail structurally: they assess risks individually when climate risks are correlated, use grids calibrated to the planning cycle, assume a stationary distribution that is precisely what is changing, and assign a single functional owner to an exposure that crosses the whole business.

Scenario analysis is not forecasting. A scenario is an internally consistent possible future used to test what would break and how much warning there would be. It requires at least one rapid-transition and one slow-transition scenario, since they stress different parts of a business, and its only output that matters is what changes now in the capital plan, siting, supplier strategy or asset life assumptions.

Disclosure has converged on governance, strategy, risk management, and metrics and targets (Securities and Exchange Board of India, 2021), with India’s commitments under the Paris Agreement framing the domestic policy clock (United Nations Framework Convention on Climate Change, 2015). The first practical task is not a target but a site and supplier map, which usually shows exposure concentrated in a few locations and largest at suppliers, and without which scenario analysis cannot be performed at all.

TipKey Terms

Systemic risk · Non-linearity · Two clocks · Physical risk · Acute risk · Chronic risk · Supply chain concentration · Correlation of exposures · Transition risk · Policy and legal risk · Technology risk · Market risk · Reputation risk · Stranded asset · Asset life mismatch · Liability risk · Failure to disclose · Duty to consider · Horizon mismatch · Markets price anticipation · Stationary distribution assumption · Scenario analysis · Scenario is not a forecast · Breaking point · Governance, strategy, risk management, metrics · Site and supplier map · Single-source dependency

Summary

Concept Description
Why Climate Is Different
Systemic risk The property that climate affects every sector and geography at once, defeating diversification
Non-linearity The property that consequence is not proportional to cause, with thresholds beyond which change is fast
Two clocks The physical clock running over decades and the policy clock capable of moving in one budget
Physical Risk
Physical risk The effect of the changing climate on assets, operations, people and supply
Acute risk Event-driven exposure such as flood, cyclone, extreme rainfall, heatwave and drought
Chronic risk Gradual exposure such as temperature, precipitation change, groundwater decline and sea level
Supply chain concentration The underestimated feature that exposure concentrates where a firm has least visibility
Correlation of exposures The feature by which one event strikes plant, workforce, road and supplier simultaneously
Transition Risk
Transition risk The effect of the move to a lower-carbon economy, arriving faster than physical risk
Policy and legal risk Carbon pricing, standards, mandates, disclosure requirements, bans and border mechanisms
Technology risk A cheaper low-carbon substitute rendering assets uneconomic and leaving a capability gap
Market risk Customer requirements down the chain, demand shift and changing relative input costs
Reputation risk Effects on licence to operate, access to capital and ability to attract people
Stranded asset An asset written down or converted to a liability through market or regulatory change
Asset life mismatch A long asset life financed on assumptions a shorter transition invalidates
Liability Risk
Liability risk Exposure to claims for harm, for non-disclosure, and against directors for not considering the risk
Failure to disclose The disclosure failure arising when a material climate exposure is not reported
Duty to consider The question about the duty of care raised where a board never considered the risk
Why Planning Fails
Horizon mismatch The relation between decisions taken now and consequences arriving decades later
Policy clock The mechanism by which firms are surprised by the response to climate rather than by climate
Markets price anticipation The reason financial consequence arrives long before physical consequence
Individual risk assessment The register weakness that treats correlated exposures as separate entries
Stationary distribution assumption The register weakness of using historical frequency where the distribution is changing
Single functional owner The register weakness of assigning one owner to an exposure crossing the whole business
Scenario Analysis
Scenario analysis The instrument for testing whether a strategy holds under conditions it does not assume
Not a forecast The essential clarification: a scenario asks what would break, not what will happen
Rapid transition scenario The scenario stressing cost, assets and capability through stringent policy and fast technology change
Slow transition scenario The scenario stressing operations, supply and location through larger physical impacts
Breaking point The point at which the strategy fails, an asset becomes uneconomic, or a requirement cannot be met
What changes now The only output that matters: the decisions taken today because of lead time
Where to Start
Site and supplier map The first practical task, without which scenario analysis cannot be applied to the business
Single-source dependency The exposure where an interruption becomes a stoppage, which the map is built to find