Myth-busting Climate risk & financial regulation: separating hype from reality

The US climate risk disclosure landscape shifted dramatically in 2025 when the SEC's final climate disclosure rules survived legal challenge and large accelerated filers began preparing their first mandatory reports for fiscal year 2025. Yet a 2025 survey by Deloitte found that 58% of US financial executives still described their understanding of regulatory requirements as "moderate or low," and 43% believed climate risk regulation would be rolled back before enforcement began. This confidence gap between regulatory reality and institutional preparedness represents one of the most consequential blind spots in American financial services today.

Why It Matters

Climate-related financial losses in the United States reached $92.9 billion in 2024, according to NOAA's National Centers for Environmental Information, making it the fifth consecutive year with losses exceeding $80 billion. The Federal Reserve's 2025 Financial Stability Report identified climate risk as a "material and growing threat to financial system stability," noting that 67% of US bank holding companies with assets over $100 billion now incorporate climate scenarios into their capital planning processes.

The regulatory architecture is no longer hypothetical. The SEC's climate disclosure rules require Scope 1 and Scope 2 emissions reporting for large accelerated filers beginning with fiscal year 2025, with Scope 3 reporting phased in for subsequent years. California's SB 253 mandates comprehensive greenhouse gas disclosure for companies with revenues exceeding $1 billion that do business in the state. The European Union's Corporate Sustainability Reporting Directive (CSRD) applies to US-headquartered companies with significant EU operations, creating extraterritorial compliance obligations. Meanwhile, the International Sustainability Standards Board (ISSB) IFRS S1 and S2 standards have been adopted or referenced by regulators in over 20 jurisdictions, establishing a global baseline that US multinationals cannot ignore.

For product and design teams building compliance infrastructure, the implications are immediate. Financial institutions need integrated risk management platforms, automated data pipelines for emissions accounting, scenario analysis tools aligned with regulatory specifications, and audit-ready reporting systems. The total addressable market for climate risk analytics and compliance technology reached $4.2 billion in 2025, growing at 32% annually according to Verdantix. Understanding which regulatory requirements are real, which are evolving, and which are misunderstood is essential for building products that meet actual market needs rather than chasing phantom mandates.

Key Concepts

Climate Stress Testing applies scenario analysis to assess how climate-related physical and transition risks could affect financial institution balance sheets, capital adequacy, and profitability under different warming pathways. The Federal Reserve piloted its first climate scenario analysis exercise in 2023 with six of the largest US bank holding companies, though results were qualitative rather than tied to capital requirements. The Bank of England's Climate Biennial Exploratory Scenario (CBES) and the European Central Bank's climate stress tests represent more advanced implementations with direct supervisory consequences.

Transition Risk encompasses financial losses arising from the shift to a low-carbon economy, including asset stranding (fossil fuel reserves that become uneconomic to extract), policy-driven cost increases (carbon pricing, emissions standards), and market shifts (changing consumer preferences, technology substitution). McKinsey estimated in 2025 that $8-12 trillion in global fossil fuel assets face potential stranding under net-zero scenarios by 2040, with US oil and gas companies holding approximately $2.4 trillion of exposed reserves.

Physical Risk includes both acute events (hurricanes, floods, wildfires) and chronic changes (sea level rise, temperature increases, water stress) that affect asset values, insurance costs, and operational continuity. First Street Foundation's 2025 National Risk Assessment found that 14.6 million US residential properties face substantial flood risk not captured by FEMA flood maps, with aggregate property value exposure exceeding $3.2 trillion.

Double Materiality is the principle that companies must report both how sustainability issues affect their financial performance (financial materiality) and how their operations affect society and the environment (impact materiality). The CSRD requires double materiality assessment, while the SEC's rules focus primarily on financial materiality. This distinction creates compliance complexity for US companies subject to both frameworks.

Climate Value-at-Risk (CVaR) quantifies the potential loss in portfolio value from climate-related risks under specified scenarios and time horizons. Unlike traditional VaR, CVaR must incorporate physical risk projections, transition policy assumptions, and technology development pathways over decades-long time horizons, introducing modeling uncertainties that far exceed conventional financial risk assessment.

What's Working

Federal Reserve Scenario Analysis Integration

The Federal Reserve's 2023 pilot climate scenario analysis exercise, though limited in scope, established a supervisory expectation that large bank holding companies develop climate risk assessment capabilities. By 2025, all six participating institutions (Bank of America, Citigroup, Goldman Sachs, JPMorgan Chase, Morgan Stanley, and Wells Fargo) had embedded climate scenario analysis into their annual CCAR (Comprehensive Capital Analysis and Review) processes, with dedicated teams of 15-40 climate risk specialists per institution. JPMorgan Chase's climate risk team grew from 12 people in 2022 to 85 by 2025, with annual budget allocation exceeding $120 million for data, models, and technology infrastructure.

California's Disclosure Requirements Driving National Compliance

California's SB 253 and SB 261, signed into law in October 2023, effectively created a national disclosure standard by capturing any company with over $1 billion in revenues doing business in California. A 2025 analysis by Ceres identified over 5,300 companies subject to SB 253's requirements, representing approximately 80% of US corporate emissions. Rather than maintaining separate reporting frameworks, many affected companies are adopting unified disclosure approaches that simultaneously satisfy SEC, California, and ISSB requirements. Microsoft, Salesforce, and Apple published integrated climate disclosures in 2025 that explicitly mapped to all three frameworks.

European Regulatory Spillover Effects

The EU's CSRD, effective for the largest companies from fiscal year 2024, has forced US multinationals with significant European operations to build comprehensive sustainability reporting capabilities. A 2025 PwC survey found that 72% of US companies subject to CSRD were applying the same reporting standards globally rather than maintaining separate US and EU systems. This "Brussels effect" has accelerated US corporate climate disclosure quality beyond what domestic regulation alone would have achieved, with average disclosure completeness scores improving from 42% to 67% between 2023 and 2025 as measured by CDP.

What's Not Working

Data Quality and Availability Gaps

Despite regulatory mandates, the fundamental data infrastructure for climate risk assessment remains inadequate. A 2025 report by the Network for Greening the Financial System (NGFS) found that only 35% of companies in major US equity indices report Scope 1 and Scope 2 emissions using audited data, with the remainder relying on estimates, industry averages, or no disclosure at all. For Scope 3 emissions, the data coverage drops to under 15%. Financial institutions building climate risk models must bridge these gaps with estimated data, introducing significant uncertainty into stress testing results and regulatory reporting.

Model Uncertainty and Scenario Limitations

Climate risk models remain in early stages of development compared to traditional financial risk tools. The Federal Reserve acknowledged in its 2025 supervision guidance that "climate scenario analysis tools are not yet sufficiently mature to inform quantitative capital requirements." Key limitations include: physical risk models that cannot reliably project localized impacts below county-level resolution; transition risk models that depend on policy assumptions that shift with each election cycle; and correlation structures between climate variables and financial outcomes that lack sufficient historical calibration data. MSCI's 2025 methodology review revealed that different climate risk models can produce CVaR estimates varying by 300-500% for the same portfolio under identical scenarios.

Political Uncertainty and Regulatory Fragmentation

The US climate risk regulatory landscape remains fragmented and politically volatile. The SEC's disclosure rules faced immediate legal challenges, and scope has been narrowed from the original proposal. State-level initiatives like California's SB 253 face their own legal challenges from business groups arguing preemption by federal securities law. The absence of a unified federal carbon pricing mechanism means transition risk modeling must account for a patchwork of state and regional policies. This uncertainty imposes significant compliance costs: a 2025 survey by the US Chamber of Commerce estimated that large US financial institutions spend $15-35 million annually on climate risk compliance across multiple regulatory jurisdictions.

Myths vs. Reality

Myth 1: Climate risk regulation will be reversed before it matters

Reality: While political cycles create uncertainty around specific rules, the structural trajectory is toward more disclosure, not less. Even under administrations skeptical of climate regulation, the SEC's investor protection mandate requires disclosure of material financial risks, and climate physical losses clearly meet that threshold at $93 billion annually. California's laws create durable state-level requirements. The ISSB baseline is being adopted globally, making international capital markets inaccessible without climate disclosure regardless of domestic US policy. Financial institutions that delay preparation face compressed implementation timelines and higher costs when compliance deadlines arrive.

Myth 2: Climate stress tests will drive immediate capital requirements

Reality: No US regulator has linked climate scenario analysis to binding capital charges, and the Federal Reserve has explicitly stated this is not the near-term intent. The 2023 pilot exercise was exploratory, with results used for supervisory understanding rather than capital adequacy determinations. The European Central Bank has moved further, incorporating climate risk into Pillar 2 supervisory reviews, but even there, capital add-ons remain modest (10-30 basis points for the most exposed institutions). Climate stress testing will influence supervisory dialogue and risk management expectations long before it affects capital ratios.

Myth 3: Only large financial institutions need to worry about climate risk regulation

Reality: While SEC disclosure rules apply initially to large accelerated filers (public float exceeding $700 million), the downstream effects reach much further. Community banks and regional lenders face indirect exposure through CRA (Community Reinvestment Act) expectations, FDIC examination guidance, and state banking department inquiries. Insurance companies face state-level climate risk disclosure requirements in California, New York, and Connecticut. Private companies above $1 billion in revenues face California SB 253 requirements regardless of public filing status. Supply chain data demands from large regulated companies cascade to their counterparties and vendors.

Myth 4: Existing ESG ratings adequately capture climate financial risk

Reality: ESG ratings and climate financial risk assessment are fundamentally different exercises. A 2025 study by the Journal of Financial Economics found near-zero correlation between ESG rating agency scores and actual climate-related financial losses across a sample of 3,200 US companies over 2019-2024. ESG ratings aggregate dozens of environmental, social, and governance factors into composite scores that dilute climate-specific risk signals. Regulatory climate risk assessment requires granular, forward-looking scenario analysis of specific physical and transition exposures, a capability that existing ESG data providers are only beginning to develop.

Key Players

Established Leaders

MSCI provides Climate Value-at-Risk analytics covering 10,000+ companies, with models integrating physical risk, transition risk, and litigation risk. Their Real Estate Climate Risk tool covers 90,000+ commercial properties across the US.

S&P Global Sustainable1 offers climate scenario analysis tools aligned with NGFS scenarios, with physical risk data at asset-level granularity covering 5 million+ locations globally.

Moody's Analytics integrates climate risk into credit analysis through its RMS climate models, with particular strength in physical risk assessment for insurance and banking sectors.

Bloomberg provides TCFD-aligned climate data and analytics through the Bloomberg Terminal, with coverage of 11,500+ companies and integration with portfolio risk management workflows.

Emerging Startups

Jupiter Intelligence delivers hyper-local physical risk analytics using proprietary climate models with resolution down to 90 meters, serving banks, insurers, and real estate investors requiring asset-level risk assessment.

Persefoni provides carbon accounting and climate disclosure management software that automates SEC, CSRD, and ISSB reporting requirements, with over 200 enterprise customers by 2025.

Watershed offers enterprise carbon management with audit-grade emissions measurement and regulatory reporting, backed by $100 million+ in venture funding and partnerships with major financial institutions.

Cervest (now part of Moody's) developed EarthScan, an AI-powered platform providing climate risk intelligence at individual asset level, with coverage spanning flood, heat, drought, and wind risks.

Key Investors and Funders

Brookfield Asset Management has committed $7.5 billion to its Global Transition Fund, the largest private fund dedicated to facilitating the transition to a net-zero economy.

Generation Investment Management (co-founded by Al Gore) integrates climate risk analysis into its $40+ billion investment strategy, advocating for enhanced climate disclosure through active ownership.

US Department of the Treasury through its Financial Stability Oversight Council (FSOC) directs attention and resources to climate risk in the financial system, with its 2024 report identifying climate as a systemic risk priority.

Action Checklist

• Map all applicable climate risk disclosure requirements (SEC, California SB 253/261, CSRD, ISSB) and identify overlapping obligations
• Establish baseline Scope 1 and Scope 2 emissions inventory using audited data, not estimates or industry averages
• Develop Scope 3 emissions measurement capability for material upstream and downstream categories
• Build or procure climate scenario analysis tools aligned with NGFS scenarios for both physical and transition risk
• Create cross-functional climate risk governance with board-level oversight and clear accountability structures
• Integrate climate risk data into existing enterprise risk management frameworks rather than maintaining separate systems
• Engage external auditors early to establish assurance readiness for climate disclosures
• Design product and technology infrastructure to accommodate evolving regulatory requirements without complete rebuilds

FAQ

Q: When do US companies actually need to start reporting climate data under the SEC rules? A: Large accelerated filers (public float over $700 million) must include climate disclosures beginning with fiscal year 2025 annual reports, filed in early 2026. Accelerated filers phase in for fiscal year 2026 filings. Scope 1 and Scope 2 emissions reporting includes a phase-in period with limited assurance initially, transitioning to reasonable assurance. Scope 3 reporting requirements have been significantly scaled back from the original proposal, with the final rule making Scope 3 disclosure voluntary but requiring disclosure of material Scope 3 targets if they exist.

Q: How do SEC rules interact with California's SB 253 and SB 261? A: There is no formal harmonization between SEC and California requirements. SB 253 applies to public and private companies with over $1 billion in revenues doing business in California, requiring Scope 1, 2, and 3 emissions disclosure. SB 261 requires climate risk reports from companies with over $500 million in revenues. These state requirements apply regardless of SEC filing status. Most compliance teams are building unified data systems that satisfy both frameworks simultaneously. Legal challenges to SB 253 on preemption grounds remain pending as of early 2026.

Q: What technology infrastructure do financial institutions need for climate risk compliance? A: At minimum: a carbon accounting platform capable of calculating financed emissions across loan and investment portfolios; physical risk analytics with asset-level geographic resolution; transition risk scenario modeling aligned with NGFS scenarios; data integration capabilities linking climate data to existing risk management and financial reporting systems; and audit trail documentation supporting regulatory assurance requirements. Most institutions are spending $5-20 million on initial technology buildout, with ongoing annual costs of $3-10 million for data, modeling, and compliance operations.

Q: Are climate risk models reliable enough for financial decision-making? A: Current models provide directionally useful signals but carry significant uncertainty. Physical risk models are most reliable for well-studied perils (coastal flooding, hurricane wind) and least reliable for emerging risks (compound events, tipping point cascades). Transition risk models depend heavily on policy assumptions that shift frequently. The best practice is to use model outputs as one input among several in risk assessment, stress testing across multiple scenarios rather than relying on single point estimates, and clearly documenting model limitations and uncertainty ranges in disclosures.

Q: How are non-US regulations affecting US companies? A: The EU's CSRD applies to US companies with EU subsidiaries generating over EUR 150 million in EU net turnover, or with EU-listed securities. An estimated 3,000+ US-headquartered companies fall within CSRD scope. The ISSB standards, while not directly enforced in the US, are being adopted by regulators in the UK, Canada, Japan, Australia, and other major markets, meaning US multinationals must provide ISSB-aligned disclosures to access those capital markets. This international convergence is the primary driver of US corporate climate disclosure improvement, independent of domestic regulatory developments.

Sources

• Securities and Exchange Commission. (2024). The Enhancement and Standardization of Climate-Related Disclosures for Investors: Final Rule. Washington, DC: SEC.
• NOAA National Centers for Environmental Information. (2025). U.S. Billion-Dollar Weather and Climate Disasters: 2024 Annual Report. Asheville, NC: NCEI.
• Federal Reserve Board. (2025). Financial Stability Report, May 2025. Washington, DC: Board of Governors.
• Network for Greening the Financial System. (2025). Progress Report on Bridging Data Gaps for Climate Risk Assessment. Paris: NGFS Secretariat.
• Deloitte. (2025). Climate Risk and Regulatory Preparedness Survey: US Financial Services. New York: Deloitte Center for Financial Services.
• First Street Foundation. (2025). 9th National Risk Assessment: The Cost of Climate Change to the American Homeowner. Brooklyn, NY: First Street Foundation.
• Verdantix. (2025). Market Size and Forecast: Climate Risk Analytics and Compliance Software 2023-2028. London: Verdantix.