Climate and Nature Risk Frameworks
TCFD and TNFD for Risk Assessment
Overview
Where This Lesson Fits
This is the second of six lessons in Module 4: Green Finance Products and Services. Building on Lesson 4.1's risk taxonomy (physical, transition, liability), this lesson introduces the global frameworks for systematically assessing and managing those risks. The TCFD provides the four-pillar structure adopted by regulators worldwide, while the TNFD extends the approach to nature-related financial risks.
Pedagogical arc: Now that you can classify risks, learn the global frameworks for assessing them.
Learning Outcomes
- Explain the TCFD four-pillar framework and why the Risk Management pillar is the operational core
- Apply the TNFD LEAP approach to identify nature-related financial risks
- Integrate climate risk into Enterprise Risk Management (ERM) processes
- Score institutional TCFD Risk Management maturity using a standardized rubric
- Compare ASEAN regulatory approaches to TCFD implementation
Prerequisites
Lesson 4.1 (Climate-Related Financial Risks: Taxonomy, Transmission, and Materiality) is recommended. Familiarity with basic risk classification (physical, transition, liability) and transmission channels will allow you to engage more deeply with the frameworks presented here.
Slide Deck
Lecture Slides (33 Slides)
Download Slide Deck (PDF)Foundation Level
TCFD Four Pillars
The Task Force on Climate-related Financial Disclosures (TCFD) structures climate risk management around four interconnected pillars. Each pillar has specific recommended disclosures, but together they form a coherent system in which governance enables strategy, strategy requires risk management, and risk management produces the metrics and targets that complete the loop.
The Four Pillars
- Governance — Board-level oversight and management's role in assessing and managing climate-related risks. Who is responsible? What committees exist? How frequently does the board review climate issues?
- Strategy — The actual and potential impacts of climate-related risks and opportunities on the organization's business, strategy, and financial planning over short, medium, and long-term horizons.
- Risk Management — The processes for identifying, assessing, and managing climate-related risks. This is the operational core of TCFD implementation and the primary focus of this lesson.
- Metrics & Targets — The quantitative indicators used to assess and manage climate-related risks: GHG emissions (Scope 1, 2, 3), climate-related targets, and performance against those targets.
Risk Management Pillar Deep Dive
The Risk Management pillar contains three sub-recommendations, each targeting a distinct stage of the risk management cycle. These sub-recommendations form the basis of the TCFD scoring rubric used in this lesson's quantitative lab.
Sub-Recommendation A: Identify
Describe the organization's processes for identifying climate-related risks. Concrete activities include:
- Mapping physical and transition risk exposures across business lines and geographies
- Conducting scenario analysis to identify risks under different climate pathways
- Engaging with sector-specific guidance (e.g., TCFD sector supplements for banking, insurance, energy)
- Establishing climate risk registers integrated with existing operational risk registers
Sub-Recommendation B: Assess
Describe the organization's processes for assessing climate-related risks. Concrete activities include:
- Quantifying the potential size and scope of identified climate risks
- Evaluating the likelihood and impact of climate risks across time horizons
- Prioritizing climate risks relative to other risks using consistent scoring methodologies
- Conducting stress testing under multiple NGFS climate scenarios
Sub-Recommendation C: Manage
Describe the organization's processes for managing climate-related risks. Concrete activities include:
- Implementing risk mitigation strategies (hedging, diversification, engagement)
- Setting risk appetite thresholds for climate-related exposures
- Integrating climate considerations into credit approval, investment, and underwriting decisions
- Monitoring and reporting on risk management effectiveness
Enterprise Risk Management Integration
Effective climate risk management does not require building a parallel risk infrastructure. Instead, climate risk should be embedded into existing Enterprise Risk Management (ERM) frameworks. The same risk appetite statements, risk registers, committee structures, and reporting lines that govern credit, market, and operational risk should be extended to encompass climate risk.
Integration Principles
- Same risk appetite framework — Climate risk tolerance is expressed within the institution's overall risk appetite statement, not as a separate policy document
- Same risk register — Climate risks are added to the existing risk register alongside credit, market, operational, and liquidity risks
- Same committee structure — The Board Risk Committee and Chief Risk Officer have explicit climate risk oversight responsibilities
- Same escalation processes — Climate risk breaches trigger the same escalation and remediation workflows as other risk types
Practical Example
A bank embedding climate into its ERM would add "physical flood risk to mortgage portfolio" as a line item in its credit risk register, scored using the same likelihood-impact matrix as other credit risks, reviewed by the same credit risk committee, and subject to the same risk appetite limits. The climate element is the new risk factor; everything else uses existing infrastructure.
TNFD and the LEAP Approach
The Taskforce on Nature-related Financial Disclosures (TNFD) extends the TCFD framework to encompass nature-related risks — risks arising from biodiversity loss, ecosystem degradation, and natural resource depletion. The TNFD introduces the LEAP approach, a four-phase process for identifying and assessing nature-related financial risks.
Spatial mapping of the organization's interface with nature. Where are the business activities, assets, and value chains located? What ecosystems and biomes do they interact with? This phase uses geospatial tools like IBAT (Integrated Biodiversity Assessment Tool) and ENCORE (Exploring Natural Capital Opportunities, Risks and Exposure).
Assessment of dependencies and impacts. What ecosystem services does the organization depend on (e.g., water purification, pollination, flood regulation)? What impacts does it have on nature (e.g., deforestation, pollution, habitat fragmentation)?
Translation of dependencies and impacts into financial risks and opportunities. What are the material nature-related financial risks? How do they interact with existing climate risk assessments? What is the magnitude and likelihood of financial losses?
Response and reporting. What strategies will the organization adopt to manage nature-related risks? How will it report on nature-related financial risks using the TNFD disclosure recommendations?
Nature-Finance Link
Nature underpins economic activity at a fundamental level. The World Economic Forum estimated in 2020 that $44 trillion of global GDP — more than half of the world total — is moderately or highly dependent on nature and its services. When ecosystems degrade, the financial system faces material risks that are distinct from, but deeply interconnected with, climate risks.
Key Nature-Finance Transmission Channels
- Deforestation — Loss of carbon sinks accelerates climate change; reduces ecosystem services (water regulation, soil stability); creates regulatory risk from EU Deforestation Regulation and similar frameworks
- Water stress — Agriculture, energy, mining, and manufacturing depend on reliable water supplies. Water scarcity increases operational costs, reduces output, and can trigger credit defaults in exposed sectors
- Pollinator loss — 75% of global food crop types rely on animal pollination. Declining pollinator populations directly threaten agricultural productivity and food security, with cascading effects on agricultural lending portfolios
- Soil degradation — Loss of topsoil fertility reduces agricultural yields, increases input costs, and erodes land values used as collateral
- Marine ecosystem decline — Coral bleaching, overfishing, and ocean acidification threaten fisheries, tourism, and coastal protection services worth hundreds of billions annually
Intermediate Level
TCFD Implementation for Risk Assessment
Moving from TCFD recommendations to operational risk processes requires translating high-level principles into concrete institutional practices. This card outlines the implementation pathway for financial institutions.
Implementation Phases
| Phase | Activities | Timeline | Output |
|---|---|---|---|
| 1 | Gap analysis: map existing risk processes against TCFD recommendations | Months 1–3 | Gap assessment report |
| 2 | Governance setup: establish board oversight, assign CRO responsibilities | Months 3–6 | Updated risk governance charter |
| 3 | Risk identification: conduct initial climate risk screening across portfolios | Months 6–12 | Climate risk register |
| 4 | Scenario analysis: run NGFS scenarios through credit and market risk models | Months 12–18 | Scenario analysis results |
| 5 | Integration: embed climate risk into BAU credit, investment, and reporting processes | Months 18–24 | Integrated ERM framework |
TNFD Sector Guidance
The TNFD provides sector-specific guidance that goes beyond general principles to offer tailored recommendations for industries with high nature dependencies and impacts.
Financial Institutions
- Apply LEAP at the portfolio level to assess aggregate nature-related exposures
- Map financed activities to biodiversity-sensitive areas using geospatial overlays
- Assess nature dependencies in credit portfolios (agriculture, fisheries, forestry, mining)
- Develop nature-positive lending criteria and exclusion policies for highest-risk activities
Agriculture
- Assess dependencies on pollination, soil health, and water availability at farm/plantation level
- Map supply chains against deforestation frontiers and protected areas
- Quantify financial exposure to regulatory risk (EU Deforestation Regulation, biodiversity credits)
Extractives
- Locate operations relative to Key Biodiversity Areas (KBAs) and World Heritage Sites
- Assess water stress exposure using WRI Aqueduct tools
- Evaluate mine closure and rehabilitation liabilities under nature-positive standards
Basel III/IV Integration
The Basel Committee on Banking Supervision (BCBS) published its Principles for the Effective Management and Supervision of Climate-Related Financial Risks in 2022, establishing how climate risk should be integrated into the three pillars of Basel III/IV.
Pillar 1: Minimum Capital Requirements
- Climate-adjusted risk weights for credit exposures to carbon-intensive sectors
- Scenario-based capital add-ons for concentrated climate exposures
- Incorporation of climate factors into Internal Ratings-Based (IRB) PD and LGD models
Pillar 2: Supervisory Review (ICAAP)
- Climate stress testing as part of the Internal Capital Adequacy Assessment Process
- Supervisor-mandated scenario analysis (e.g., NGFS scenarios as reference)
- Assessment of bank governance and risk management for climate risks
- Potential Pillar 2 capital surcharges for inadequate climate risk management
Pillar 3: Market Discipline (Disclosure)
- Standardized climate risk disclosures aligned with TCFD/ISSB S2
- Quantitative metrics: GHG emissions, climate VaR, transition plan targets
- Qualitative disclosures: governance arrangements, risk management processes, strategy
where $K_{\text{base}}$ is the standard Basel capital requirement, $\alpha_{\text{climate}}$ is the climate sensitivity factor (regulatory parameter), and $\text{Exposure}_{\text{climate}}$ is the proportion of the portfolio in climate-sensitive sectors.
Worked Example: Thai Bank TCFD Scoring
Apply the TCFD Risk Management scoring rubric to a hypothetical Thai commercial bank. The rubric scores four dimensions on a 0–3 scale, producing a total score out of 12.
Scoring Rubric
| Dimension | 0 — Absent | 1 — Basic | 2 — Developing | 3 — Advanced |
|---|---|---|---|---|
| Identification | No climate risk identification process | Ad hoc identification; no systematic process | Systematic screening; climate risk register exists | Comprehensive identification integrated into all business lines |
| Assessment | No quantification of climate risks | Qualitative assessment only | Some quantitative metrics; limited scenario analysis | Full scenario analysis with multiple NGFS pathways |
| Management | No climate risk mitigation | Generic policies; no enforcement | Sector-specific policies; some integration into credit decisions | Climate risk embedded in all risk decisions; active portfolio steering |
| Integration | Climate risk siloed from ERM | Climate risk reported separately | Climate risk in risk register; reviewed by risk committee | Full ERM integration; climate in risk appetite statement |
Example Scores: Siam Commercial Bank (Hypothetical)
Interpretation: The bank has systematic risk identification and sector-specific management policies, but lags on quantitative assessment (limited scenario analysis) and full ERM integration. Priority actions: (1) implement NGFS scenario analysis, (2) include climate risk in the board risk appetite statement.
PhD Extension
TCFD Effectiveness
Krueger, Sautner & Starks (2020) conducted one of the most influential empirical studies on whether institutional investors actually incorporate climate risks into their decision-making. Surveying 439 institutional investors globally, they found a stark gap between awareness and action.
Key Findings
- 43% of institutional investors consider climate risks as important as other investment risks
- But only 25% had actually adjusted their portfolio allocation based on climate risk assessments
- The awareness-action gap is largest for physical risks, which investors acknowledge but find hardest to quantify
- Investors with longer time horizons (pension funds, sovereign wealth funds) are significantly more likely to act on climate risk
- Regulatory pressure is the strongest motivator for incorporating climate risk, followed by fiduciary duty concerns
Implications for TCFD
The study suggests that TCFD disclosure alone may be insufficient to change behavior. Mandatory disclosure, combined with supervisory expectations and capital requirements, appears necessary to close the awareness-action gap. This finding has directly influenced the transition from voluntary TCFD to mandatory ISSB S2.
TNFD Data Challenges
While TCFD benefits from relatively mature data infrastructure (GHG emissions accounting, climate scenarios), TNFD implementation faces fundamental data and measurement challenges that make nature-related risk assessment significantly harder.
Three Core Challenges
- Spatial resolution — Nature risks are highly location-specific. A forest in Borneo has different biodiversity value than one in Scandinavia. Unlike carbon emissions (which are globally fungible), nature impacts require high-resolution geospatial data that is often unavailable for ASEAN supply chains
- Biodiversity metrics — There is no single, universally accepted metric for biodiversity comparable to tonnes of CO2 equivalent. Competing metrics include species richness, Mean Species Abundance (MSA), Biodiversity Intactness Index (BII), and STAR (Species Threat Abatement and Restoration). Each has different strengths and limitations
- Dependency mapping — Quantifying financial dependence on specific ecosystem services requires understanding complex ecological-economic linkages. How much does a bank's agricultural portfolio actually depend on pollination services? The tools (ENCORE, IBAT) provide qualitative assessments but lack the quantitative precision needed for financial risk modeling
Emerging Solutions
- Satellite-based monitoring (Global Forest Watch, Planet Labs) provides near-real-time deforestation alerts
- Environmental DNA (eDNA) sampling enables rapid biodiversity assessment
- TNFD's own data architecture (the TNFD Data Catalogue) aims to standardize available datasets
Regulatory Evolution: Voluntary TCFD to Mandatory ISSB S2
The journey from voluntary TCFD recommendations (2017) to mandatory ISSB S2 standards (2024) represents an 8-year transition that fundamentally changed the regulatory landscape for climate risk disclosure.
Timeline
| Year | Milestone | Status |
|---|---|---|
| 2017 | TCFD Final Recommendations published | Voluntary |
| 2019 | NGFS publishes first climate scenarios for central banks | Advisory |
| 2020 | UK FCA mandates TCFD for premium-listed companies | Mandatory (UK) |
| 2021 | G7 commits to mandatory TCFD-aligned disclosure | Political commitment |
| 2022 | BCBS publishes climate risk principles; MAS finalizes environmental risk guidelines | Supervisory expectations |
| 2023 | ISSB publishes IFRS S2; TCFD disbanded (mission transferred to ISSB) | Global baseline |
| 2024 | ISSB S2 adoption begins in 20+ jurisdictions; BOT mandates TCFD alignment | Mandatory (expanding) |
Implications
The voluntary-to-mandatory transition demonstrates that market forces alone were insufficient to drive adequate climate risk disclosure. The regulatory ratchet — from voluntary recommendations to supervisory expectations to legally binding standards — reflects a fundamental lesson: disclosure without mandate produces uneven adoption and limited behavioral change.
Double Materiality in Practice
The concept of double materiality lies at the intersection of TCFD (financial materiality) and TNFD (impact materiality), and represents the most comprehensive approach to risk assessment. The EU's Corporate Sustainability Reporting Directive (CSRD) mandates double materiality assessment, while the ISSB S2 focuses on financial materiality. This philosophical divergence has practical consequences for how risks are identified, assessed, and managed.
Reconciling Two Perspectives
| Dimension | Financial Materiality (ISSB) | Impact Materiality (GRI/ESRS) | Double Materiality (EU CSRD) |
|---|---|---|---|
| Question | How does climate/nature affect our financial performance? | How do our activities affect climate/nature? | Both directions simultaneously |
| Audience | Investors and creditors | Society and stakeholders | All stakeholders |
| Scope | Risks that affect enterprise value | Impacts regardless of financial effect | Union of both scopes |
| ASEAN adoption | Singapore (MAS), Hong Kong (SFC) | Limited formal adoption | Emerging in EU trade-partner contexts |
Quantitative Lab
TCFD Risk Management Scoring & Radar Chart
Scoring Rubric
| Dimension | 0 — Absent | 1 — Basic | 2 — Developing | 3 — Advanced |
|---|---|---|---|---|
| Identification | No climate risk identification | Ad hoc; no formal process | Systematic screening with risk register | Comprehensive, all business lines |
| Assessment | No quantification | Qualitative only | Some quantitative; limited scenarios | Full NGFS scenario analysis |
| Management | No mitigation | Generic policies | Sector-specific; some credit integration | Embedded in all risk decisions |
| Integration | Siloed from ERM | Separate reporting | In risk register; committee review | Full ERM; in risk appetite statement |
Python Pseudocode
Lab Steps
- Select 10 ASEAN financial institutions from the TCFD Knowledge Hub supporters list. Download their most recent annual or sustainability reports.
- For each institution, read the Risk Management disclosure section and score each of the four dimensions (Identification, Assessment, Management, Integration) on the 0–3 rubric above.
- Record scores in a structured spreadsheet or Python array. Calculate total scores (out of 12) and classify each institution: 0–3 = Absent, 4–6 = Basic, 7–9 = Developing, 10–12 = Advanced.
- Construct a radar chart using the Python template above. Overlay all 10 institutions on a single chart to enable visual comparison across dimensions.
- Write a 300-word analysis identifying: (a) which dimension shows the largest cross-institution variation, (b) whether Singapore-based banks score systematically higher, and (c) what specific improvements the lowest-scoring institutions should prioritize.
Data Sources
Case Study: Thailand — BOT TCFD Implementation
Bank of Thailand — From 2011 Floods to TCFD Mandate
Regulatory Context
The Bank of Thailand (BOT) mandated TCFD-aligned disclosures beginning in 2024, making it one of the most proactive central banks in ASEAN on climate risk regulation. The policy was shaped by Thailand's direct experience with catastrophic climate events and the recognition that the financial system requires systematic climate risk management.
The 2011 Floods as Catalyst
Thailand's 2011 floods caused an estimated $46.5 billion in economic damage — one of the costliest natural disasters in history. Over 800 factories in seven industrial estates north of Bangkok were inundated, disrupting global supply chains for hard drives, automotive parts, and electronics. The financial sector impact was severe:
- Non-performing loan ratio in flood-affected areas increased from 3.2% to 8.7%
- Insurance industry losses exceeded $15 billion, with several insurers requiring capital injections
- GDP contracted by 9% in Q4 2011 before recovering in 2012
- The BOT was forced to implement emergency liquidity facilities for affected banks
Phased Implementation
| Phase | Scope | Timeline | Requirements |
|---|---|---|---|
| Phase 1 | Large commercial banks (D-SIBs) | 2024 | Full TCFD four-pillar disclosure; climate stress testing; risk appetite integration |
| Phase 2 | All commercial banks | 2025 | TCFD disclosure (phased); risk identification and initial scenario analysis |
| Phase 3 | Specialized financial institutions | 2026+ | Proportionate TCFD requirements; sector-specific guidance |
Three-Country Comparison Exercise
Compare the regulatory approaches of three ASEAN central banks to TCFD implementation:
| Dimension | BOT (Thailand) | MAS (Singapore) | SBV (Vietnam) |
|---|---|---|---|
| Mandate type | Mandatory (phased) | Mandatory (2022) | Voluntary (emerging) |
| Scope | All banks (phased) | All banks, insurers, asset managers | Large state-owned commercial banks |
| Scenario analysis | Required (NGFS-aligned) | Required (industry stress test 2022) | Not yet required |
| Nature/TNFD | Under consideration | Biodiversity guidance published 2024 | Not yet addressed |
| Key driver | 2011 flood experience | Financial center competitiveness | World Bank technical assistance |
Discussion Questions
Key Concepts
Glossary (17 Terms)
- Basel III/IV
- International regulatory framework for banks setting minimum capital, leverage, and liquidity requirements. Climate risk integration is addressed through all three pillars: capital (Pillar 1), supervisory review (Pillar 2), and disclosure (Pillar 3).
- Climate risk assessment
- The systematic process of identifying, analyzing, and evaluating climate-related risks to an organization's financial performance, strategy, and operations across multiple time horizons and scenarios.
- Double materiality
- The EU CSRD framework requiring assessment of both how climate/nature affects firm value (financial materiality) and how the firm's activities affect climate/nature outcomes (impact materiality).
- Enterprise Risk Management (ERM)
- An integrated framework for managing all risks facing an organization through a unified risk appetite, risk register, committee structure, and reporting process. Climate risk should be embedded within ERM, not managed separately.
- Financial materiality
- The ISSB/IFRS approach: a climate or nature risk is material if it could reasonably influence investor decisions about enterprise value. Outside-in perspective focused on risks to the firm.
- Governance pillar
- TCFD Pillar 1: the organization's board-level oversight and management's role in assessing and managing climate-related risks and opportunities.
- ICAAP
- Internal Capital Adequacy Assessment Process. A Basel Pillar 2 requirement where banks assess their own capital needs, including for climate-related risks, subject to supervisory review and potential capital add-ons.
- Impact materiality
- The GRI/ESRS approach: a firm's climate or nature impacts are material regardless of whether they affect the firm's own financial performance. Inside-out perspective focused on the firm's effects on the world.
- ISSB S2
- IFRS S2 Climate-related Disclosures, published 2023. The global baseline standard for climate disclosure, building on and superseding the TCFD recommendations. Focuses on financial materiality for investor decision-making.
- LEAP approach
- The TNFD's four-phase process for nature-related risk assessment: Locate (spatial mapping), Evaluate (dependencies and impacts), Assess (risks and opportunities), Prepare (respond and report).
- Metrics & Targets pillar
- TCFD Pillar 4: the quantitative indicators used to assess and manage climate-related risks, including GHG emissions (Scope 1, 2, 3), climate-related targets, and performance tracking.
- Nature-related financial risk
- Financial risks arising from biodiversity loss, ecosystem degradation, and natural resource depletion. Includes dependency risks (reliance on ecosystem services) and impact risks (regulatory and reputational consequences of harming nature).
- Risk Management pillar
- TCFD Pillar 3: the operational core of the TCFD framework. Covers processes for identifying, assessing, and managing climate-related risks, with three sub-recommendations (identify, assess, manage).
- Scenario analysis (TCFD)
- The use of hypothetical future climate pathways (e.g., NGFS scenarios) to assess how climate risks would affect an organization's strategy, financial performance, and resilience under different temperature outcomes.
- Strategy pillar
- TCFD Pillar 2: the actual and potential impacts of climate-related risks and opportunities on the organization's business model, strategy, and financial planning across time horizons.
- TCFD
- Task Force on Climate-related Financial Disclosures. Established by the FSB in 2015, published recommendations in 2017, disbanded in 2023 with mission transferred to the ISSB. The four-pillar structure (Governance, Strategy, Risk Management, Metrics & Targets) remains the global standard.
- TNFD
- Taskforce on Nature-related Financial Disclosures. Published recommendations in 2023, extending the TCFD approach to nature-related risks using the LEAP framework. Addresses biodiversity loss, ecosystem degradation, and nature dependencies.
References
Key References
- 2023 TCFD. "Final Report: Recommendations of the Task Force on Climate-Related Financial Disclosures." Financial Stability Board.
- 2023 TNFD. "Recommendations of the Taskforce on Nature-related Financial Disclosures." TNFD.
- 2020 Krueger, P., Sautner, Z., & Starks, L.T. "The Importance of Climate Risks for Institutional Investors." Review of Financial Studies, 33(3), 1067–1111.
- 2023 Bank of Thailand. "Sustainable Finance Framework and TCFD Guidelines for Financial Institutions." BOT.
- 2022 MAS. "Guidelines on Environmental Risk Management for Banks." Monetary Authority of Singapore.
- 2022 BCBS. "Principles for the Effective Management and Supervision of Climate-Related Financial Risks." Basel Committee on Banking Supervision.
- 2020 WEF. "Nature Risk Rising: Why the Crisis Engulfing Nature Matters for Business and the Economy." World Economic Forum.
- 2023 ISSB. "IFRS S2: Climate-related Disclosures." International Sustainability Standards Board.