Carbon Risk Assessment in Financial Decision-Making
Summary
Carbon risk assessment has emerged as a central component of contemporary financial analysis, reflecting the material impact of greenhouse gas emissions on firm value and portfolio resilience. It encompasses two primary dimensions: transition risk arising from policy shifts, technological advances and market reallocation towards low-carbon pathways, and physical risk arising from the increasing frequency and severity of climate-driven hazards. Financial institutions now employ scenario analysis and climate stress–testing frameworks to quantify exposures under varying trajectories of carbon prices, regulatory tightening and energy-sector decarbonisation. These approaches integrate forward-looking metrics such as portfolio carbon footprints, emission intensity ratios and forward default probabilities to inform lending, investment and underwriting decisions. Carbon-related risks feed directly into cost of capital estimations by altering expected cash flows, collateral valuations and default probabilities. As global regulators advance mandatory disclosure regimes and supranational bodies refine climate risk guidelines, robust carbon risk assessment facilitates strategic asset allocation, drives engagement with high-emitting issuers and underpins the development of transition-aligned financial products. In this way, it serves both risk-management objectives and broader policy goals of steering capital towards net-zero outcomes.
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Carbon Risk Assessment in Financial Decision-Making publication trend
The graph below shows the total number of articles in carbon risk assessment in financial decision-making across all publications each year (not limited to Nature Index journals).
Technical terms
Carbon risk: The financial exposure arising from a firm’s greenhouse gas emissions, encompassing both policy-induced transition costs and losses due to climate-driven physical events.
Transition risk: The potential financial impact on firms stemming from shifts to a low-carbon economy, including regulatory measures, technology disruption and changes in consumer preferences.
Physical risk: The potential economic losses resulting from climate-related hazards, such as floods, wildfires or extreme weather events, affecting asset values and operational continuity.
Idiosyncratic risk: The risk specific to an individual firm or asset, here influenced by its carbon profile and susceptibility to climate-related factors, distinct from broader market movements.
Cost of debt: The effective interest rate a firm pays on its borrowed funds, which can be adjusted upward by lenders to reflect elevated carbon or climate risk.
References
- Dealing with Carbon Risk and the Cost of Debt: Evidence from the European Market. International Journal of Financial Studies (2020).
- Do corporate carbon emissions affect risk and capital costs?. International Review of Economics & Finance (2024).
- Will the Reduction of CO2 Emissions Lower the Cost of Debt Financing? The Case of EU Countries. Energies (2021).
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