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29 July 2025

Victory! The ECB introduces climate factor in collateral framework

The European Central Bank (ECB) has announced a historic climate policy change that introduces climate risk assessment into its collateral framework. This decision marks a significant victory for advocacy and research organisations like us and represents a crucial step towards integrating sustainability into central banking operations.

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What is the ECB climate factor and why does it matter?

The ECB just announced a new climate factor within its collateral framework to manage financial risks better in relation  to the climate crisis. This policy represents one of the first times a major central bank has directly incorporated climate risk assessment into its core operational structure.

The ECB collateral framework is a fundamental mechanism in European banking. 

It allows banks to borrow from the ECB by offering financial assets, such as corporate bonds or government securities, as collateral. This process is similar to how a homeowner uses their property to secure a mortgage. 

When banks offer corporate bonds or other securities as collateral, the ECB will now assess the climate risk exposure of those assets. Assets from companies with higher climate-related risks may face stricter conditions or reduced acceptance, incentivising banks to favour investments in more sustainable businesses. 

Put simply, by determining which assets are acceptable as collateral, the ECB can effectively address the behaviour of banks and the market across the eurozone.


The ECB climate factor is a huge victory - but it can still be improved  

This announcement represents the culmination of years of campaigning by us. We have long called for the ECB to stop supporting polluting industries through its monetary policy operations.

The new climate policy mirrors the report “Nature's Nudge: The Role of Collateral Frameworks in the Transition Towards a Sustainable Economy” that we conducted in partnership with WWF.  

This announcement marks an important step towards the fulfilment of the ECB's primary mandate of price stability and financial stability, as well as its secondary mandate of promoting the general economic policies of the European Union.

By recognising climate risk as a financial risk, the ECB acknowledges that the transition to a sustainable economy is not just an environmental imperative but a financial one as well.

However, the measure currently focuses only on marketable assets issued by non-financial corporations, which represent a smaller portion of the Eurosystem's total collateral.

Also, at present the policy addresses only climate risks, leaving out other critical environmental concerns such as biodiversity loss and ecosystem collapse.

The ECB's decision to integrate climate considerations into its collateral framework may set a precedent for other major central banks worldwide. 

This move demonstrates that central banks can play an active role in climate policy without overstepping their mandates.


What could the ECB do to ‘green’ monetary policy, beyond considering the climate factor?

The ECB can and should:

  • expand the scope of its climate considerations, by incorporating biodiversity risks

  • implement more ambitious measures such as preferential rates for green investments

As the climate crisis and the need for clean energy solutions both accelerate, the pressure on central banks to take bolder action will only intensify… and we will keep an eye on what is happening!

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