Banking Law and Physical Climate Risk Finance in Spain

Physical climate risk finance in Spain concerns the way banks identify, price, monitor and manage financial risks arising from the physical effects of climate change. These include floods, drought, extreme heat, wildfires, coastal erosion, storms and water scarcity.

For Spanish banks, this is increasingly a banking-risk issue rather than merely an environmental-policy issue. A mortgage secured by a property in a flood-prone area, for example, can be affected by falling collateral value, insurance costs, business interruption and the borrower's reduced repayment capacity.

Spain's framework combines EU banking law, ECB/European Banking Authority (EBA) requirements, Spanish climate legislation, prudential rules, disclosure obligations and ordinary Spanish contract and insolvency law.

Important case-law qualification: There are still relatively few reported Spanish judgments directly deciding a dispute described specifically as "physical climate risk finance." The relevant case law therefore comes from EU climate/environmental jurisprudence, Spanish banking and mortgage jurisprudence, and cases establishing principles concerning environmental duties, risk disclosure and financial contracts. I do not treat those cases as if they were direct Spanish physical-climate-risk lending precedents.

1. What Is Physical Climate Risk?

Physical climate risk is the financial risk created by the actual physical effects of climate change.

It is normally divided into two categories.

Acute physical risk

Sudden events such as:

• floods;
• wildfires;
• heatwaves;
• storms;
• extreme rainfall;
• landslides.

Chronic physical risk

Longer-term changes such as:

• rising temperatures;
• persistent drought;
• sea-level rise;
• water scarcity;
• changing agricultural conditions.

For banks, these risks can translate into financial losses.

2. How Physical Climate Risk Reaches a Bank

The transmission mechanism can be illustrated as:

Climate event

↓

Damage to property/business

↓

Borrower's income falls / collateral deteriorates

↓

Probability of default increases

↓

Bank's expected credit loss increases

↓

Capital and provisioning consequences

This is known as a climate-risk transmission channel.

3. Example: Spanish Mortgage Lending

Imagine a Spanish bank grants:

Mortgage: €300,000

secured by:

Coastal property: €400,000

A series of severe coastal events causes:

• physical damage;
• higher insurance premiums;
• reduced demand;
• declining property values.

The borrower may still owe:

€300,000

while the property is now worth:

€250,000.

The bank's loan-to-value position has deteriorated.

This is a physical climate risk even though the original loan contract was completely ordinary.

4. Main Spanish Legal Framework

A. Law 7/2021

A central Spanish statute is:

Law 7/2021 of 20 May on Climate Change and Energy Transition (Ley 7/2021).

It establishes Spain's framework for climate neutrality and climate-risk management.

Its financial-sector provisions are important because climate risks increasingly have to be incorporated into financial decision-making and disclosure.

The legislation connects climate policy with:

• financial stability;
• investment;
• risk assessment;
• financial-sector information.

5. EU Banking Law

Spanish banks are also governed by EU prudential legislation.

Important instruments include:

• Capital Requirements Regulation (CRR);
• Capital Requirements Directive (CRD);
• EBA Guidelines;
• ECB supervisory expectations;
• EU sustainable-finance legislation.

For significant Spanish banks directly supervised by the ECB, ECB supervisory expectations are particularly important.

Physical climate risk can therefore enter the bank's:

• credit-risk framework;
• governance;
• risk appetite;
• ICAAP;
• stress testing;
• disclosure;
• strategic planning.

6. ECB Climate and Environmental Risk Expectations

The ECB has developed supervisory expectations requiring banks to address climate-related and environmental risks.

The key idea is that climate risk should be incorporated into existing risk-management structures.

The bank should be able to understand:

Where is the exposure?

What physical hazard affects it?

How severe could the financial impact be?

What happens to the borrower?

What happens to collateral?

This is important because the ECB generally does not treat climate risk as a completely separate banking risk category.

Instead, it can manifest as:

• credit risk;
• market risk;
• operational risk;
• liquidity risk;
• reputational risk.

7. EBA and Prudential Risk

The European Banking Authority has increasingly integrated ESG and climate considerations into prudential supervision.

Physical risk can affect the traditional prudential categories.

Credit risk

Borrowers may have difficulty repaying.

Collateral risk

Property and other secured assets may lose value.

Operational risk

Bank branches, data centres or infrastructure can be physically damaged.

Market risk

Climate-related events can affect securities and investments.

Liquidity risk

Large losses or withdrawals can increase funding pressure.

8. Climate Risk and Credit Assessment

Spanish banks should increasingly consider climate exposure when evaluating borrowers.

For a business borrower, relevant questions may include:

• Is the factory in a flood zone?
• Is the business dependent on water?
• Is agricultural production exposed to drought?
• Is the business dependent on climate-sensitive infrastructure?
• Does the borrower have insurance?
• Does the borrower have a business-continuity plan?

The objective is not to refuse financing simply because a borrower faces climate exposure.

Instead, the bank needs to understand whether the exposure creates material financial risk.

9. Physical Climate Risk and Agriculture Finance

Spain has substantial agricultural exposure to drought and heat.

Consider:

Agricultural loan: €2 million

The borrower depends heavily on water-intensive crops.

A prolonged drought causes:

• lower production;
• lower revenue;
• increased irrigation costs;
• reduced debt-service capacity.

The bank's credit risk consequently increases.

The bank may respond through:

• revised risk assessment;
• additional information;
• insurance requirements;
• restructuring;
• sector concentration limits;
• scenario analysis.

10. Physical Risk and Real Estate Finance

Real estate is particularly important.

Physical climate hazards can affect:

• market value;
• habitability;
• insurance availability;
• rental income;
• construction costs;
• mortgage recoveries.

Relevant hazards include:

• flooding;
• wildfire;
• extreme heat;
• coastal erosion;
• landslides.

A bank therefore needs increasingly sophisticated geographical information when assessing property-backed lending.

11. Flood Risk

Flooding is particularly relevant in parts of Spain.

For mortgage and commercial-property lending, banks can consider:

• location;
• flood maps;
• historical events;
• elevation;
• drainage;
• insurance;
• expected future exposure.

The key banking question is:

Could a future physical event materially impair the borrower's ability to repay or reduce the value of the collateral?

12. Wildfire Risk

Wildfires create another Spanish physical-risk channel.

A property can suffer:

Physical damage → reduced property value → insurance complications → increased loan loss risk.

For businesses, wildfire can additionally cause:

• interruption of operations;
• supply-chain disruption;
• loss of inventory;
• temporary closure.

Banks therefore need to consider both collateral risk and borrower-income risk.

13. Drought and Water Risk

Drought is particularly important for:

• agriculture;
• food processing;
• tourism;
• manufacturing;
• energy;
• utilities.

A company may appear financially healthy under normal conditions but become significantly weaker if water availability falls.

This is an example of scenario-dependent credit risk.

14. Climate Stress Testing

Banks use climate scenarios to estimate potential future losses.

A simplified model might consider:

Scenario A

Moderate physical hazards.

Scenario B

Severe drought and heat.

Scenario C

Repeated extreme-weather events.

The bank then estimates effects on:

• probability of default;
• loss given default;
• collateral value;
• revenue;
• operating costs;
• capital.

Climate stress testing is therefore an extension of traditional financial risk analysis.

15. Loan Pricing

Physical climate risk can theoretically affect loan pricing.

For example:

Borrower A

Low physical-risk exposure.

Borrower B

High flood exposure + uninsured property + weak resilience.

If the second borrower presents materially greater expected loss, the bank may incorporate that risk into its credit assessment and pricing.

However, climate-related pricing should be supported by objective risk analysis, rather than arbitrary classifications.

16. Insurance as a Risk Mitigation Tool

Insurance can reduce—but not eliminate—physical climate risk.

For a mortgage property:

Climate hazard → physical damage

↓

Insurance claim

↓

Repair/replacement

↓

Collateral preserved

But banks need to consider:

• coverage;
• exclusions;
• deductibles;
• limits;
• affordability;
• insurer solvency;
• increasing premiums;
• whether insurance remains available.

A property may technically be insured today but become significantly more expensive to insure in the future.

That creates an additional financial-risk consideration.

17. Climate Risk and Collateral Valuation

Traditional valuation asks:

What is the property worth today?

Climate-aware valuation increasingly asks:

What could the property be worth under plausible future physical-risk scenarios?

For example:

Current value: €500,000

Potential physical-risk adjustment:

Scenario value: €420,000

Outstanding mortgage:

€450,000

The bank could then face a materially different collateral position.

18. Disclosure Requirements

Spanish banks are subject to extensive EU and Spanish disclosure requirements.

Relevant frameworks can include:

• EU Taxonomy Regulation;
• Sustainable Finance Disclosure Regulation (SFDR) where applicable;
• CRR disclosure requirements;
• Pillar 3 ESG disclosures;
• Spanish climate-disclosure rules.

These regimes differ according to the type of institution and activity.

A bank should therefore distinguish between:

risk management

and

public sustainability disclosure.

A disclosure requirement does not automatically mean that every loan must be classified as a "green loan."

19. EU Taxonomy

The EU Taxonomy Regulation (Regulation (EU) 2020/852) is particularly relevant.

It establishes a classification system for environmentally sustainable economic activities.

One of the environmental objectives is:

climate-change adaptation.

This is directly relevant to physical climate risk because adaptation activities can include measures designed to reduce vulnerability to climate hazards.

For a bank, taxonomy analysis can therefore help distinguish:

financing that is exposed to climate risk

from

financing that contributes to climate adaptation.

They are not the same concept.

20. Green Loans vs Climate-Risk Lending

A crucial distinction:

Climate-risk lending

The bank assesses how climate hazards affect credit risk.

Green lending

The financing is intended to support qualifying environmentally beneficial activities.

A loan to a company in a flood-prone area is not automatically a green loan.

Conversely, financing flood-resilience infrastructure could potentially qualify under applicable sustainable-finance criteria.

21. Climate Adaptation Finance

Spain has an important need for adaptation investment.

Potential financed projects include:

• flood protection;
• water-efficiency infrastructure;
• drought-resistant agricultural systems;
• resilient buildings;
• wildfire prevention;
• climate-resilient transport;
• cooling infrastructure.

Banks can finance these projects while simultaneously evaluating the physical risks affecting the borrower.

22. Corporate Lending

For corporate borrowers, climate-risk assessment can become part of ordinary credit underwriting.

A bank may examine:

Physical hazard

exposure

vulnerability

=

financial risk

For example:

A factory located in a flood-prone region may have:

• high exposure;
• low physical resilience;
• inadequate insurance.

That combination can materially increase credit risk.

23. Climate Risk and Covenants

Loan agreements may include financial or operational covenants.

In sophisticated transactions, documentation can require borrowers to:

• maintain specified insurance;
• provide climate-risk information;
• maintain business-continuity measures;
• report material physical events;
• provide updated asset valuations.

These contractual provisions must be drafted carefully and consistently with Spanish contract law and applicable consumer protections.

24. Existing Loans

Climate risk is not limited to new lending.

Banks must also monitor existing portfolios.

Suppose a bank granted:

€5 billion of mortgages

ten years ago.

The physical-risk profile of the underlying properties can change over time.

Therefore:

origination risk assessment

is not enough.

Banks need:

ongoing portfolio monitoring.

25. Portfolio Concentration Risk

Imagine a bank has:

€10 billion total real-estate loans

and:

€4 billion concentrated in one region with significant flood exposure.

Even if individual mortgages appear sound, the concentration can create systemic exposure for the bank.

Climate risk management should therefore consider:

• geographical concentration;
• sector concentration;
• collateral concentration;
• supply-chain concentration.

26. Bank Governance

Climate-risk management increasingly reaches board-level governance.

Relevant responsibilities can include:

• approving risk appetite;
• overseeing climate-risk strategy;
• reviewing stress-test results;
• ensuring adequate expertise;
• monitoring material exposures.

The bank's board does not need to become a climate-science body.

But it should understand the financial consequences of material climate risks affecting the institution.

27. Physical Climate Risk and Capital

One of the most important prudential questions is:

Does physical climate risk produce additional expected or unexpected financial loss?

If so, it can affect:

• provisions;
• risk-weighted assets;
• capital planning;
• stress testing;
• ICAAP.

The bank should integrate climate considerations into established prudential methodologies rather than creating an entirely separate accounting system.

28. Relevant Spanish and EU Case Law

Case 1 — ClientEarth v Board of Directors of Shell

High Court of Justice of England and Wales, [2023] EWHC 1137 (Ch).

This was not a Spanish or EU banking case, and the court did not establish a general banking duty to finance climate transition.

Its significance is nevertheless useful for understanding corporate governance debates surrounding climate risk.

Banking relevance

It illustrates why climate-related risk can increasingly become a question of corporate governance and directors' duties, although its legal holding should not be transplanted directly into Spanish banking law.

Case 2 — Verein KlimaSeniorinnen Schweiz and Others v Switzerland

European Court of Human Rights, Application No. 53600/20, Grand Chamber, 9 April 2024.

The Court recognised important human-rights dimensions of climate change and found Switzerland responsible for shortcomings concerning climate-change protection.

Relevance to Spain

The judgment is not a Spanish banking decision.

However, it demonstrates the increasing legal importance of climate-risk governance in Europe.

For financial institutions, it reinforces the broader regulatory environment in which climate-related physical risks are no longer purely voluntary sustainability considerations.

Case 3 — People's Climate Case

General Court, Joined Cases T-330/18 and related proceedings.

The applicants challenged EU climate measures.

The case is relevant because it illustrates the judicial development of legal arguments concerning climate impacts and EU institutional responsibilities, although the Court ultimately rejected the action as inadmissible.

Banking relevance

It does not establish a direct duty for Spanish banks to make climate-risk loans.

Its relevance is contextual: EU climate regulation increasingly affects the legal environment in which financial institutions operate.

Case 4 — Waddenzee

CJEU, Case C-127/02, Waddenvereniging and Vogelbeschermingsvereniging v Staatssecretaris van Landbouw, Natuurbeheer en Visserij.

The Court established an important precautionary approach to environmental assessment.

Banking relevance

Although not a financial case, the decision demonstrates the importance of assessing environmental effects where legal thresholds are triggered.

For project finance, banks may therefore need to consider whether financed projects require environmental approvals and whether environmental risks could affect project viability.

Case 5 — Holohan

CJEU, Case C-461/17, Holohan and Others v An Bord Pleanála.

The Court addressed requirements surrounding environmental assessment.

Banking relevance

In infrastructure and project finance, failure to obtain required environmental approvals can produce:

• construction delays;
• regulatory action;
• loss of project value;
• repayment problems.

Environmental legal due diligence can consequently form part of credit-risk analysis.

Case 6 — Janecek

CJEU, Case C-237/07, Dieter Janecek v Freistaat Bayern.

The Court considered legal protection connected with air-quality requirements.

Banking relevance

The decision demonstrates how environmental regulatory duties can generate enforceable legal consequences affecting economic activity.

For banks financing environmentally sensitive projects, regulatory compliance can therefore be financially material.

29. Spanish Banking Case-Law Connection

Spanish courts have extensive jurisprudence concerning:

• mortgage contracts;
• consumer protection;
• unfair contractual terms;
• banking transparency;
• financial information;
• lender duties.

However, these cases should not be relabelled as physical-climate-risk cases.

The climate-specific banking jurisprudence is still developing.

The practical implication is that a Spanish climate-finance dispute may initially be resolved through existing doctrines concerning:

• contractual good faith;
• disclosure;
• professional diligence;
• mortgage security;
• damages;
• causation;
• consumer protection;
• administrative compliance.

30. Example: Climate Risk in a Spanish Mortgage Portfolio

Consider a bank with:

100,000 mortgages

Total outstanding:

€15 billion

Suppose €3 billion is concentrated in properties exposed to significant flood risk.

The bank should examine:

1. property location;
2. hazard intensity;
3. borrower income;
4. insurance;
5. collateral valuation;
6. loan-to-value ratios;
7. expected loss;
8. geographical concentration;
9. future climate scenarios.

If physical events increase expected losses materially, that information should feed into the bank's risk-management processes.

31. Example: Corporate Climate Finance

A Spanish bank finances a coastal manufacturing plant.

Loan:

€50 million

The plant is exposed to:

• flooding;
• extreme heat;
• supply-chain disruption.

The bank could assess:

Baseline exposure

↓

Climate scenario

↓

Physical damage

↓

Revenue impact

↓

Debt-service capacity

↓

Collateral recovery

This produces a more complete credit-risk assessment.

32. Role of the Banco de España

The Banco de España is important to Spain's financial-stability and banking-supervision framework.

For institutions under national supervision, climate and environmental risks can enter supervisory assessment.

For significant institutions within the Banking Union, however, the ECB has direct supervisory responsibility, with the Banco de España participating within the European supervisory structure.

Therefore, the applicable supervisory authority depends on the institution.

33. Role of the CNMV

The Comisión Nacional del Mercado de Valores (CNMV) becomes relevant where climate-related financial products, investment services and securities-market disclosures are involved.

This is particularly important when a bank:

• distributes sustainable investment products;
• issues securities;
• provides investment services;
• makes sustainability-related disclosures.

Banking supervision and securities supervision should therefore not be conflated.

34. Key Legal Risks

Spanish banks face several legal and prudential risks from physical climate exposure.

35. Compliance Framework for Spanish Banks

A comprehensive physical-climate-risk framework should include:

1. Identify

Map exposures geographically.

2. Measure

Estimate probability and financial impact.

3. Monitor

Track changes in hazards and borrower condition.

4. Mitigate

Use insurance, diversification, covenants and other risk controls.

5. Stress test

Model severe but plausible scenarios.

6. Report

Provide required regulatory and public disclosures.

7. Govern

Ensure senior management and the board understand material exposures.

36. Important Legal Distinction

A bank is not automatically legally liable for every loss caused by climate change simply because it financed a property or business that later suffered a flood, drought or wildfire.

Liability depends on the particular facts and legal basis.

For example:

Climate event

does not automatically establish:

bank breach

which does not automatically establish:

bank liability for customer's loss.

A claimant would need to establish the relevant legal duty, breach, causation and recoverable damage.

This distinction is particularly important when discussing climate-related litigation.

37. Physical Risk vs Transition Risk

These should not be confused.

Physical risk

Damage caused by climate change itself.

Examples:

• flood;
• drought;
• heat;
• wildfire.

Transition risk

Financial consequences of moving toward a lower-carbon economy.

Examples:

• carbon regulation;
• energy-transition costs;
• stranded assets;
• changes in consumer demand.

A Spanish bank can be exposed to both simultaneously.

38. Overall Legal Structure

The framework can be visualised as:

EU climate and banking law

↓

CRR / CRD + EBA framework

↓

ECB climate-risk supervision

↓

Spanish Law 7/2021 and related legislation

↓

Banco de España / CNMV supervisory framework

↓

Bank climate-risk governance

↓

Credit underwriting + portfolio monitoring

↓

Provisioning / capital / disclosure

↓

Individual financing contracts

Conclusion

Physical climate risk finance in Spain is increasingly treated as a component of ordinary financial risk management rather than as a separate voluntary sustainability activity. Spanish banks must consider how floods, droughts, wildfires, extreme heat, storms, water scarcity and other physical hazards can affect borrowers, collateral, operations and ultimately bank capital.

The principal legal framework combines Law 7/2021 on Climate Change and Energy Transition, EU prudential legislation such as the CRR/CRD, EBA requirements, ECB supervisory expectations and EU sustainable-finance legislation including the Taxonomy Regulation.

For lending, the central analytical chain is:

physical hazard → borrower vulnerability → financial impact → probability of default/collateral loss → bank credit risk.

This means climate analysis should increasingly appear in mortgage lending, agricultural finance, corporate lending, project finance, collateral valuation, stress testing, portfolio concentration analysis and capital planning.

The case-law landscape remains comparatively young. KlimaSeniorinnen, Waddenzee, Holohan, Janecek and related European environmental cases demonstrate the growing legal importance of climate and environmental risk, but they should not be described as direct Spanish banking precedents. Spanish courts are more likely, at least for now, to resolve climate-related lending disputes through established doctrines of contract, banking transparency, professional diligence, environmental compliance, causation, damages and insolvency, supplemented by the increasingly detailed prudential climate-risk framework.

Research note: I do not have functioning live public-web search in this session, so I have not represented the above as a verification of the latest 2026 ECB, EBA, Banco de España or Spanish legislative amendments. For a compliance or litigation memorandum, the current versions of Law 7/2021, CRR/CRD, ECB supervisory expectations, EBA guidelines and applicable Banco de España/CNMV guidance should be checked against the relevant reporting period.