Climate scenario analysis: A CFO’s guide to resilience, risk and cost avoidance

Key takeaways

• Climate scenario analysis tests how resilient your business is against a range of possible futures. It is a stress test, not a forecast.
• Acting on the risks and opportunities identified cuts costs and builds business cases for new revenue, which is what moves EBITDA.
• Many decarbonisation initiatives in a transition plan pay for themselves, so the plan is not only a list of costs.
• Buyers of private equity-backed businesses carry out the same climate due diligence as public market investors, and they use unmitigated risks to justify a lower price.
• Starting 2 or more years before exit leaves time to identify and mitigate risks, realise opportunities, improve earnings and remove reasons for a buyer to discount.

The explainer

• Climate transition plan: how your business will cut emissions and adapt its strategy as the economy moves to low carbon, with the costs mapped out.
• Climate transition risk: the financial risk from the transition to a lower-carbon economy shift, such as new regulation, carbon pricing or changing customer demand.
• Climate physical risk: the damage and disruption from the climate itself, such as the effect of heat on your workforce, increased wildfires, and flooding.
• Climate opportunity: the savings and growth the transition creates, from lower energy costs to new products, services and markets.
• Climate scenario analysis: testing your business against several plausible climate futures to see where you’re exposed and what it could cost.

If you’re a CFO, you’ve probably heard the business case for climate scenario analysis and filed it under compliance. But done properly, climate scenario analysis and the transition plan it informs are among the most direct tools you have to build resilience, avoid cost and protect your valuation at exit. They show where climate could disrupt your business, from site teams unable to work safely in extreme heat to suppliers who can’t deliver, and what it would cost if you did nothing.

It’s also becoming unavoidable. UK Sustainability Reporting Standards (UK SRS) ask companies to complete and disclose qualitative climate scenario analysis and a transition plan, and the Financial Conduct Authority (FCA) has mandated UK SRS climate disclosures for listed companies from 2027 on a comply or explain basis . If you’re backed by private equity (PE), your next buyer may be held to those standards.

“High-quality [climate] disclosures help investors make informed capital allocation decisions, support more accurate market pricing, and assist issuers in strengthening strategic planning and operational resilience.” FCA, 2026, final policy statement on UK SRS (PS26/19)

Here are the 4 objections we hear most, answered:

It will move EBITDA (earnings before interest, tax, depreciation and amortisation), if you act on what it finds. Scenario analysis identifies the financial risks and opportunities climate creates for your business. Mitigating those risks trims cost, and quantifying the opportunities gives you a business case to go after new revenue.

Often the opportunities are already known inside the business. What’s missing is the number that turns an idea into an investment case.

The same goes for the transition plan. Decarbonisation is assumed to mean spending heavily for no return, but when each initiative is costed, many save money. For example, an initial investment of £50,000 on efficient LED lighting and automatic sensors, may pay back within 18 months and cut your energy bills substantially for many years to come.

Scenario analysis assesses how resilient your business is against possible futures, precisely because no one knows which one will arrive. You already manage risk this way, for example you invest in cyber security without being certain of an attack. Climate risk is no different: your main supplier failing, a site flooding, a jump in input costs.

The point is to show shareholders that in a low-emissions or high-emissions world, you’ve considered it and have mitigation in place. That will build certainty and confidence.

The exposure is real, you only need to look at headlines from the last few summers to know that physical climate risk is accelerating. Around half of global natural catastrophe losses in 2025 were uninsured, so the cost landed on businesses. [Swiss Re sigma 1/2026]. Your business will be exposed and likely uninsured unless you have systematically assessed the risks facing it.

The disclosure is the output, but the value is in the decisions it changes and the engagement it requires of stakeholders across your business. Every one of them lands somewhere in your accounts.

• Operating costs (food-to-go): scenario analysis showed energy costs rising and hotter summers pushing up demand for cold drinks. So when a food-to-go business we work with refitted its stores, it chose more energy-efficient fridges. The driver was the energy bill, and the outcome is a lower carbon footprint too.
• Revenue (food and drink): when heat stress hit agricultural crops, one food business couldn’t stock its usual breakfast range and lost sales. It has since diversified its suppliers and built alternative menu options, and is now looking at how it buys coffee as prices become more volatile.
• Cash flow and financing (construction): if outdoor work stops above 35°C [verify], a hot summer can mean weeks of lost time or a switch to night shifts. Projects slip, payments come in later, and debt repayments and financing terms come under pressure.
• Assets (housing): a housing provider found that residents struggle when temperatures stay above 30°C. Windows expected to last 30 years now need replacing with ones that reflect the sun, which shortens asset lives and brings capital spending forward.

Disclosure still matters, because it’s how financial stakeholders judge you. A business reliant on agricultural raw materials that says nothing about climate looks exposed. One that can say “this share of revenue is at risk, and here’s our response” demonstrates better management practices and lower exposure to unknown risks  well run.

Private ownership moves the scrutiny to due diligence. Your buyer asks the same questions as a public market investor, and wants to pay as little as possible. An unmitigated dependence on one supplier is a reason to discount.

There are 3 positions you can be in at exit:

1. You’ve done nothing. The buyer concludes you don’t understand your climate related risks and asks for a larger discount.
2. You’ve done the analysis. You can show your climate related risks and price them in, but the buyer inherits the job of fixing them.
3. You did it 2 years earlier and acted. Risks are mitigated, earnings have likely benefited, and due diligence finds less. A resilient business can command a premium.

Buyers aren’t the only ones asking. A Carbon Reduction Plan, committing to Net Zero by 2050, is a condition of bidding for UK central government contracts worth over £5 million a year, and lenders and insurers are asking too.

Start well before due diligence. Scenario analysis identifies risks quickly, but mitigation can take years. Incorporate it into your wider enterprise risk management framework, so it is managed alongside wider business risks and opportunities. Then treat it as always on, revisiting it as the business grows or changes.

A practical sequence:

1. Set your scenarios and time horizons: Use recognised scenarios, such as the International Energy Agency’s (IEA) for transition risk and the Intergovernmental Panel on Climate Change’s (IPCC) for physical risk, over the short, medium and long term.

2. Run a qualitative assessment: Use interviews and workshops to find your most material risks and opportunities.

3. Quantify what matters most: Model the financial impact of the most material ones, and cost your decarbonisation options.

4. Build it into your transition plan and business planning: Link the findings to budgets, investment decisions and board reporting.

The key question to take to your next board meeting: if a buyer ran climate due diligence on us today, what would they find, and what would it cost us?

Talk to us. Credible scenario analysis is right-sized, compliant where that matters, and focused on the decisions you’ll make. Want to go into due diligence knowing what a buyer will find? Speak to our Net Zero and Climate Transition team.

1. Is climate scenario analysis mandatory in the UK? It depends on size and listing. Large UK companies already make climate-related financial disclosures, and UK SRS S2, the climate standard, proposed for listed companies from 2027, expects scenario analysis to support resilience statements. Groups in scope of the EU’s Corporate Sustainability Reporting Directive (CSRD) must also use it. [verify at publication]

2. What’s the difference between a transition plan and a net zero target? A net zero target sets the destination and date. A transition plan sets out how you’ll get there: the actions, costs and governance, and how you’ll manage climate risks and opportunities on the way.

3. How many climate scenarios does a business need? Most frameworks expect a minimum of  2 contrasting scenarios, typically including one aligned with 1.5°C and one high-emissions scenario. The aim is to test resilience.

4. Does a PE-backed business need a transition plan? Often not by law, but increasingly by expectation. Investors, lenders, customers and buyers look for evidence that you understand your climate risks, and a credible plan before exit reduces reasons to discount your valuation.

5. Do I need a transition plan to set a science-based target? For businesses looking to set a Science-Based Target, the SBTi’s Net Zero Standard v2 states that Category A companies a