## Climate Change and Monetary Policy

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**Canonical URL:** [Climate Change and Monetary Policy](https://www.imf.org/en/publications/fandd/issues/2021/09/isabel-schnabel-ecb-climate-change)

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## Bibliographic details
- Authors: ISABEL SCHNABEL
- Published: September 2, 2021

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### Overview
- Author: ISABEL SCHNABEL, member of the executive board of the European Central Bank.
- Publication: F&D Magazine, September 2021.
- Core argument: Central banks must "do their part in fighting global warming" because climate change materially affects central banks’ ability to achieve their mandates, including price stability, financial stability, and banking supervision.

### Observed climate change benchmarks
- The past six years have been the hottest six on record.
- Temperatures in 2020 exceeded the 1850–1900 average by 1.25°C (2.25°F).

### ECB economy-wide climate stress test (scope and approach)
- The ECB is conducting an economy-wide stress test to quantify consequences of climate change on companies and banks.
- The exercise draws on a range of climate scenarios developed by the Network for Greening the Financial System (NGFS).
- The scenarios are used to assess the potential impact on roughly 4 million companies worldwide and nearly 2,000 banks in the euro area.
- NGFS membership evolution: established with eight members in 2017; now has 95 members and 15 observers. The IMF joined as an observer in 2019.

### Preliminary stress-test findings and model results
- Without further mitigation policies, physical risks (heat waves, windstorms, floods, droughts, and the like) will probably increase substantially (Alogoskoufis and others 2021).
- The average default probability of the credit portfolios of the 10 percent of euro area banks most vulnerable to climate risks could rise substantially—up 30 percent by 2050.
- Firms across Europe are exposed to physical risks from climate change, although risks are distributed unevenly.
- Compared with physical risks, the costs of transitioning to a carbon-neutral economy appear relatively contained (de Guindos 2021).
- Recent IMF research (IMF 2020) echoes the finding that up-front investment in mitigation will likely be more than offset over the long run as firms avoid aggravated physical risk and reap economic rewards of mitigation.

### Channels through which climate change affects central bank mandates
- Transmission channel:
  - Losses from materializing physical risks or stranded assets could weigh on financial institutions’ balance sheets.
  - Reduced balance-sheet health may reduce the flow of credit to the real economy and weaken transmission of monetary policy to consumption and investment.
  - Central banks are exposed to potential losses from securities acquired in asset purchase programs and on collateral provided by counterparties.
- Equilibrium real interest rate channel:
  - Climate impacts (e.g., impaired labor productivity, increased morbidity and mortality) and reallocation of productive resources to adaptation could lower the equilibrium real rate of interest.
  - Increased precautionary savings and reduced incentives to invest could further lower the equilibrium rate, increasing the likelihood that policy rates will be constrained.
  - Countervailing possibility: green innovation and investment might raise equilibrium rates and help exit the low-inflation, low-interest-rate environment.
- Inflation dynamics channel:
  - Greater incidence of physical risks can cause short-term fluctuations in output and inflation that amplify longer-term macroeconomic volatility.
  - Mitigation policies (for example, carbon pricing programs) can affect price stability by precipitating large and long-lasting trends in relative prices and driving a wedge between headline and core measures of inflation.

### Policy implications and central bank responses
- Timing: There are clear benefits to acting early—short-run transition costs can be offset over the long run by avoided physical risk and mitigation benefits.
- Role of central banks:
  - Central banks cannot remain on the sidelines; a consensus is building that they should increase attention to climate change given its implications for mandates.
  - Central banks are starting to integrate climate-related risks into their monetary policy operations.
- Strategic message: Now is the time to undertake ambitious and broad-based action to ensure an orderly transition and mitigate the effects of climate change.

### Key citations and referenced works (as cited in the source)
- Alogoskoufis, S., and others. 2021. “Climate-Related Risks to Financial Stability.” Financial Stability Review, European Central Bank, Frankfurt.
- de Guindos, L. 2021. “Shining a Light on Climate Risks: The ECB’s Economy-wide Climate Stress Test.” ECB Blog, March 18.
- International Monetary Fund (IMF). 2020. “Mitigating Climate Change—Growth- and Distribution-Friendly Strategies.” World Economic Outlook, Chapter 3, Washington, DC, October.
- Papoutsi, M., M. Piazzesi, and M. Schneider. 2021. “How Unconventional Is Green Monetary Policy?” Stanford University working paper, Stanford, CA.
- Schnabel, I. 2021. “From Market Neutrality to Market Efficiency.” Welcome address at the ECB DG-Research Symposium “Climate Change, Financial Markets and Green Growth.” Frankfurt, June 14.

*Source: Climate Change and Monetary Policy, ISABEL SCHNABEL, F&D Magazine, September 2021.*

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_Source: https://www.imf.org/en/publications/fandd/issues/2021/09/isabel-schnabel-ecb-climate-change_
