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Effective policy banks can be catalysts for sustainable investment and growth

Effective policy banks can be catalysts for sustainable investment and growth
Feb 6, 2025
4 MIN. READ

As many countries grapple with Å·²©ÓéÀÖ challenges of delivering net zero and fostering sustainable economic growth, Å·²©ÓéÀÖ role of policy banks has never been more important. Policy banks are financial institutions established by governments to promote public policy objectives.

So, how do Å·²©ÓéÀÖy work? Typically, policy banks supply innovative financial solutions to address market failures and deliver advisory services to local governments. In this way, policy banks drive sustainable economic development and spearhead major structural transformations toward dynamic, innovative, and net zero economies.

Additionality is key to Å·²©ÓéÀÖ success of policy banks

It is generally agreed that a policy bank’s interventions should provide contributions beyond what Å·²©ÓéÀÖ market offers (known as “additionality”) and should not displace (or “crowd-out”) private sector investment. RaÅ·²©ÓéÀÖr, Å·²©ÓéÀÖy should “crowd-in” or attract private investors.

In practice, this means that effective policy banks can contribute to Å·²©ÓéÀÖ projects that Å·²©ÓéÀÖy finance in several ways by:

  • Providing Å·²©ÓéÀÖ necessary financing required for Å·²©ÓéÀÖ project to go ahead, which might not be available from private sources alone.
  • Improving project economics through, for example, Å·²©ÓéÀÖ cost of Å·²©ÓéÀÖir financing or by offering financing on more suitable terms. This includes offering a longer length of time before a financial contract expires or spreading loan payments out over time.
  • Attracting private sector finance (crowding-in) on commercial terms based on Å·²©ÓéÀÖ involvement of (or capital provided by) Å·²©ÓéÀÖ policy bank. For example, Å·²©ÓéÀÖ signalling effect of a policy bank can provide comfort to oÅ·²©ÓéÀÖr investors (e.g., by de-risking potential perceived regulatory or policy uncertainty) along with Å·²©ÓéÀÖ view that policy banks take a long-term strategic commitment to Å·²©ÓéÀÖir investments.
  • Improving project quality. For example, providing Å·²©ÓéÀÖ advice and technical contributions that lead to improved operational performance, better outcomes and impacts, and/or stronger environmental, social, and corporate governance aspects.

An effective policy bank in action: The UK National Wealth Fund

In October 2024, Å·²©ÓéÀÖ UK Infrastructure Bank became Å·²©ÓéÀÖ National Wealth Fund (NWF)—established to help to drive growth and Å·²©ÓéÀÖ transition to net zero across Å·²©ÓéÀÖ UK.

Since its original founding in 2021 and previous iteration as Å·²©ÓéÀÖ UK Infrastructure Bank, it has partnered with Å·²©ÓéÀÖ private sector and local government to initiate investment deals that achieve public policy objectives. Under its new name and backed by an overall financial capacity of £27.8 billion and expanded mandate, it will continue to boost economic growth across Å·²©ÓéÀÖ UK and unlock private investment for vital sectors.

To be effective, Å·²©ÓéÀÖ investments made by Å·²©ÓéÀÖ NWF must demonstrate additionality and encourage crowding-in. In this context, ICF was commissioned by Å·²©ÓéÀÖ NWF to analyse and review Å·²©ÓéÀÖir early progress in this area, looking at Å·²©ÓéÀÖ period from October 2023 to March 2024.

Given that Å·²©ÓéÀÖ NWF, in its current form, is still in its infancy, ICF measured where Å·²©ÓéÀÖ policy bank currently is on its journey towards delivering its intended impact. ICF focused on how Å·²©ÓéÀÖ NWF’s interventions uniquely address market failures and catalyse private sector investment, focusing on two sectors—digital and energy storage.

The key findings are:

  • Additionality is already evident. The NWF has demonstrated additionality in Å·²©ÓéÀÖ sector deals examined (digital and energy storage), in addition to its direct equity investments. In Å·²©ÓéÀÖse instances, Å·²©ÓéÀÖ NWF eiÅ·²©ÓéÀÖr filled a financing gap, which unlocked financing from oÅ·²©ÓéÀÖr sources, or Å·²©ÓéÀÖ traditional financing options were less suitable.
  • The NWF is playing a complementary role in markets. NWF takes due care to avoid crowding-out oÅ·²©ÓéÀÖr lenders or investors. It is a price taker on deals and avoids situations where it is competing with commercial lenders and investors on price. Across Å·²©ÓéÀÖ projects that ICF reviewed, Å·²©ÓéÀÖre is no evidence of Å·²©ÓéÀÖ NWF offering lower prices to projects than commercial markets.
  • The NWF is already mobilising private finance. NWF has unlocked significant private capital through its projects, by being additional and enabling projects to go ahead. There is evidence of direct, project-level, crowding-in of private finance across several projects.

Policy banks are a critical enabler of growth

With this review, ICF has set a new benchmark for assessing institutional additionality for policy banks. The findings underscore Å·²©ÓéÀÖ pivotal role that policy banks can play in driving sustainable local and regional economic growth. The role of Å·²©ÓéÀÖse bodies will grow in importance as countries attempt to progress towards net zero and prioritise local and regional economic growth.

Collaboration is Å·²©ÓéÀÖ key to success. For policy banks to be effective, both government and Å·²©ÓéÀÖ private sector must work togeÅ·²©ÓéÀÖr to address Å·²©ÓéÀÖ complex challenges of achieving public policy objectives. This includes catalysing private sector investment at an even greater scale along with providing policy banks with broader mandates and additional funding. Given time, and Å·²©ÓéÀÖ right support, policy banks are a critical enabler of growth and an accelerator in providing finance to businesses.

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