The effectiveness of microprudential regulation
In this paper, Lena Schreiner and Andreas Beyer provide an empirical analysis of the ECB’s climate-risk-related supervisory efforts on banks. The authors use a difference-in-difference approach to compare the changes in climate risk exposure and green finance activities between banks subject to ECB supervision (Significant Institutions or SIs) and those that are not (Less Significant Institutions or LSIs). Their empirical findings are robust across various specifications and control variables, indicating that the observed effects are not driven by other factors.
Impact on Climate Risk Exposure and Management
- Reduction in Climate Risk Exposure: The ECB’s climate-risk-related supervisory efforts have significantly reduced the climate risk exposure of the banks that were subject to these efforts. This is evidenced by an improvement in the banks’ Bloomberg Environmental Scores (E-Scores), which measure environmental risk exposure and management.
- Enhanced Risk Management: Banks have improved their climate risk management practices as a result of the ECB’s supervisory measures. This includes better integration of climate risks into their risk assessment and management processes.
Impact on Green Finance Activities
- Increase in Green Bond Issuance: There has been a significant increase in the issuance of green bonds by banks subject to the ECB’s climate-risk-related supervision. Green bonds are used to finance environmentally sustainable projects.
- Growth in ESG Assets Under Management: Banks have increased their investments in ESG (Environmental, Social, and Governance) assets, reflecting a broader commitment to sustainable finance.
- Rise in Green Lending: The supervisory efforts have led to an increase in green lending activities by banks. This means banks are providing more loans to projects and companies that meet environmental sustainability criteria.
Policy Implications
The paper recommends that the ECB continue its climate-risk-related supervisory efforts due to their positive impact on reducing climate risk and promoting green finance. Announcing supervisory measures early can have positive anticipatory effects on banks’ behavior, leading to better preparedness and proactive.
The impact of ECB Banking Supervision on climate risk and sustainable finance
Authors: Lena Schreiner, Andreas Beyer
From: ECB
The need for macroprudential regulation
In this paper, Kim et al. investigate how competition among U.S. banks affects their strategic adaptation to climate change, particularly focusing on how banks update their internal risk models and lending behaviors in response to emergent climate risks. The study uses detailed supervisory data on U.S. home equity lines of credit (HELOCs) and high-resolution flood projections to analyze these dynamics. Their key findings include:
Bank Learning and Adaptation
- Learning from Hurricane Harvey: Banks exposed to Hurricane Harvey updated their internal risk models to better reflect flood risk projections. This learning was not limited to areas directly affected by the hurricane but extended to other regions as well.
- Structural Break in Risk Models: There was a notable structural break in how banks considered climate risks in their internal models post-Hurricane Harvey, indicating a significant learning event.
- Heterogeneity in Learning: Banks with greater exposure to the hurricane showed more pronounced updates in their risk models. This suggests that proximity to the disaster provided informational advantages that were incorporated into risk assessments.
Impact of Competition on Adaptation
- Reduced Lending in Less Competitive Markets: Banks exposed to the hurricane reduced lending to areas with higher flood risks, but this behavior was primarily observed in less competitive markets. In more competitive markets, banks were less likely to curtail risky lending.
- Strategic Complementarity: Banks were less likely to adapt in markets where competitors were also less likely to do so, indicating a strategic complementarity. This suggests that banks’ adaptation behaviors are influenced by the actions of their competitors.
Mechanisms and Spillovers
- Durability of Informational Advantages: The learning effects were durable and did not reverse over time, suggesting that the observed changes were due to informational advantages rather than transient salience biases.
- Spillover Effects: There is evidence of spillover effects in bank adaptation strategies. Banks were more likely to reduce risky lending when competitors also adapted, indicating a positive externality in adaptation efforts.
Policy Implications
Macroprudential Considerations: The findings highlight the need for regulatory frameworks to consider macroprudential consequences of climate risks. Individual banks’ adaptation strategies can have broader implications for the financial system, necessitating a coordinated approach to managing climate-related risks.
Bank Competition and Strategic Adaptation to Climate Change
Authors: Dasol Kim, Luke M. Olson, Toan Phan
From: Office of Financial Research, Federal Reserve Bank of Richmond
