The $US150+ trillion infrastructure financing gap

The world needs an estimated $US151.1 trillion of infrastructure investment by 2050¹. Meeting this demand will require significant amounts of long-term capital.

What is driving demand for new capital?

Infrastructure investment needs are accelerating around the world. Power networks are expanding, digital infrastructure is scaling rapidly, and ageing assets require significant renewal. The scale of investment required has outgrown what traditional lenders can provide alone. As banks continue to reduce long-term infrastructure lending, private capital is playing an increasingly important role in financing the essential assets that support economic growth. Structural megatrends are reshaping infrastructure needs globally, driving demand for both investment and the capital required to finance it: digital expansion, power demand and infrastructure renewal.

Digital expansion | Funding the infrastructure behind a connected world

$US 7.4 t

in digital infrastructure investment is projected by 2050¹

AI, cloud computing and growing data consumption are driving demand for data centres, fibre networks and communications infrastructure at an unprecedented scale.

These assets are typically underpinned by long-term contracts with blue-chip counterparties, creating the stable cash flows that infrastructure debt is designed to finance.

Power demand | Financing the energy systems of the future

$US 25 t

in energy infrastructure investment is projected by 2050¹

Electrification, the energy transition and rising demand from data centres and manufacturing are driving investment across generation, storage, transmission and grid infrastructure.

The scale and duration of these investments are supporting growing demand for private infrastructure financing.

Infrastructure renewal | Upgrading the assets the world depends on

$US 50 t

in transportation infrastructure investment is projected by 2050¹ – the single largest sector need

Ageing roads, rail networks, airports and ports across developed markets require significant investment to maintain, modernise and expand capacity, while rising populations continue to drive demand across water, utilities and social infrastructure.

Together, these dynamics are creating a growing need for the long-term capital that infrastructure debt can provide.

What is infrastructure debt?

Infrastructure debt refers to loans made directly to the owners and operators of essential assets – energy networks, data centres, roads, fibre, airports and utilities. Where infrastructure equity means owning these assets, infrastructure debt means financing them. It sits senior in the capital structure, with a focus on income over capital growth.

Unlike corporate loans, infrastructure debt is secured against physical assets with long operational lives, predictable contracted cash flows and, in many cases, regulated or government-backed revenue streams.

Essential services with inelastic demand: Infrastructure assets provide fundamental services – clean water, reliable electricity, connectivity, transport – that are critical to economic activity. Because these services are indispensable, demand has historically been steady across economic conditions.

Regulated or contracted cash flows: Many infrastructure assets operate under regulatory frameworks or long-term contractual arrangements, providing greater visibility into future cash flows and insulating revenues from short-term market volatility.

Predictable, inflation-linked income: Infrastructure cash flows are often forecastable and, in many cases, linked to inflation through contractual or regulatory mechanisms – helping preserve real income over time.

High barriers to entry: Infrastructure assets typically require substantial upfront investment, limiting competitive pressures and helping protect the revenue streams of established assets.

How infrastructure debt works

1. Identify the asset

An owner or operator of an essential infrastructure asset – such as a data centre, power network or transportation facility – requires long-term financing to develop, refinance or expand.

2. Structure the loan

The lead or sole lender works directly with the borrower to structure a loan, negotiating terms such as security over the asset, covenant protections and repayment schedules.

3. Earn contracted income

Investors receive regular income payments from the loan, backed by the cash flows of the underlying asset and supported by a senior position in the capital structure.

Explore what infrastructure debt can bring to portfolios

Infrastructure debt can offer a combination of income potential and resilience, underpinned by essential assets that support everyday economic activity

Read the insight

Connect with our private markets specialists to learn more about our solutions.

View all infrastructure insights

PwC, ‘Global Infrastructure Outlook 2025–50: Investing in infrastructure, the platform for accelerating human progress’, 2026

Macquarie Asset management is a leading global asset manager offering a diverse range of investment solutions, including real assets, real estate, and credit.

This information is a general description of Macquarie Asset management only. The views expressed in this website represent those of the relevant investment team and are subject to change. No information set out above constitutes advice, an advertisement, an invitation, a confirmation, an offer or a solicitation, to buy or sell any security or other financial product or to engage in any investment activity, or an offer of any banking or financial service. Some products and/or services mentioned on this website may not be suitable for you and may not be available in all jurisdictions.

Investing involves risk including the possible loss of principal. The investment capabilities described in this website involve risks due, among other things, to the nature of the underlying investments. All examples herein are for illustrative purposes only and there can be no assurance that any particular investment objective will be realized or any investment strategy seeking to achieve such objective will be successful. Past performance is not a reliable indication of future performance.

Before acting on any information, you should consider the appropriateness of it having regard to your particular objectives, financial situation and needs and seek advice.

Other than Macquarie Bank Limited ABN 46 008 583 542 (“Macquarie Bank”), any Macquarie Group entity noted in this website is not an authorized deposit-taking institution for the purposes of the Banking Act 1959 (Commonwealth of Australia). The obligations of these other Macquarie Group entities do not represent deposits or other liabilities of Macquarie Bank. Macquarie Bank does not guarantee or otherwise provide assurance in respect of the obligations of these other Macquarie Group entities. In addition, if this website relates to an investment, (a) the investor is subject to investment risk including possible delays in repayment and loss of income and principal invested and (b) none of Macquarie Bank or any other Macquarie Group entity guarantees any particular rate of return on or the performance of the investment, nor do they guarantee repayment of capital in respect of the investment.

Additional important information (including regional disclosures)

[3246420]