The Next Evolution of Infrastructure Financing

Introduction

The foundations of Infrastructure debt are shifting. Infrastructure funding needs are accelerating, McKinsey estimates $106 trillion will be required by 2040 to fund new and upgraded infrastructure. Debt financing will represent the largest share of this funding requirement and it is the segment most constrained. The answer to meeting this demand, put simply, is that capital must be used as efficiently as possible. Capital is available, yet usable balance sheet and capital regulatory constraints mean it needs to be well structured and correctly targeted to maximise capacity. 

This article is written following extensive conversations with professionals across the infrastructure debt ecosystem. These discussions include both European and global participants, covering traditional project finance lenders as well as newer institutional entrants shaping the next phase of the market. The findings set out here reflect the first-hand insight these leaders have brought to discussions with Mondrian Alpha, and a consistent message emerged: structural change is no longer optional, it is being forced by scale.

Originate-to-distribute models, fund-level tranching, and securitisation are not financial innovation for its own sake. They are responses to an unavoidable misalignment between rising infrastructure demand and the constrained capacity of traditional holders of long-dated risk. 

What is less visible and what we see early through our position is how quickly this shift is beginning to reshape organisations and talent. The winners will not be determined solely by balance sheet size or cost of capital, but by who can adapt fastest. Who can build platforms, structure risk, run distribution engines, and align underwriting, capital markets, and investor appetite into a coherent system. The losers will be those who remain built for a bilateral lending world while the market evolves into a capital markets enabled ecosystem.

The next phase of infrastructure debt will be defined by the firms and talent that reposition themselves accordingly around what is changing, why it is changing, and how these shifts are already altering competitive dynamics, not just between institutions, but between individuals.

Bank’s Strategic Pivot: Capital Efficiency Over Balance Sheet 

Banks remain central to infrastructure financing in Europe, continuing to play a leading role in project origination and structuring, even as their function as long-duration holders of risk has diminished. While 2025 has been a record year for many banks, the strategic focus has shifted toward improving capital efficiency and profitability. 

As banks adjust strategies and begin operating to maximise their efficiency, this has encouraged the reemergence of the originate-to-distribute model, but the deeper implication is that this model alone cannot absorb the scale of capital required and banks are having to think creatively about how they become capital efficient. Back-leverage has emerged as a recurring theme in our discussions and is now increasingly prevalent, particularly among US banks, which typically adopt more aggressive structuring approaches. Its use reflects the need to blend large pools of capital raised in higher yield strategies with more conservative financing, enabling managers and banks to optimise returns while efficiently deploying distinct sources of capital within a single structure.

Another notable trend is the growth of partnerships between asset managers and banks. As we have seen, there has been an increase in asset managers competing with banks, albeit that comes with a premium, it is beginning to happen. Strategic integrations and collaboration will allow platforms to offer speed, scale and deliverability. 

Others are exiting legacy infrastructure exposures or reducing concentration in specific sub-sectors, through large back-book sales, which we’ve seen increase, reflecting deliberate optimisation and a rerouting of capital. When discussing with the market, what was most interesting was the opportunity for banks to selectively acquire undervalued exposures and actively manage the distribution of that risk balance sheet and how that might shift in the market through securitised structures or the gradual development of a more liquid loan market. 

These methods are also becoming increasingly complemented by securitisation through structured credit solutions. Banks need scalable mechanisms to originate and distribute smaller and mid-sized loans to manage balance sheet constraints more efficiently. Institutions without these capabilities will find themselves structurally disadvantaged. 

After speaking with someone based in a large US investment bank, who historically viewed securitisation as rigid, he agrees. After seeing the way capital can flow, he and others, sitting within more typical buy and hold to maturity positions in the market, expressed the tool's ability to offer flexibility and operate as a scalable risk management tool. 

 Unlike the corporate credit and leveraged finance markets, infrastructure debt does not yet benefit from a deep, standardised secondary or securitisation framework. However, we've discussed with many that there is a growing consensus that a connectivity mechanism with asset managers will be necessary. This would allow banks to access non-bank capital systematically, without retaining exposure and crucially, outside traditional banking channels.

SRTs (Synthetic Risk Transfers), which the market is familiar with, support greater standardisation of infrastructure loans, enabling leverage, ratings, and ultimately the development of a functioning infrastructure CLO (Collateralised Loan Obligation). The result would be a more efficient distribution model, broader investor participation, and the further creation of investable, rated products. Which, from our conversations, is highly welcomed in the market. 

This shift in mindset also changes the skill set required for teams to succeed. Teams must shift from balance sheet lenders to capital efficient risk managers, structuring infrastructure debt for distribution, securitisation, and rapid capital recycling from origination. With headcounts tight, success depends on fewer, more versatile experts who understand balance-sheet constraints, capital markets tools, and how to use technology to scale output. Competitive advantage is no longer about deal access, but the ability to deploy, transfer, and redeploy capital efficiently and with discipline.

An example of successful implementation of securitisation in the European market is Infrastructure Asset-Backed Securities (ABS) structures. Whilst it remains narrow and is currently most visible in digital infrastructure, particularly hyperscale data centres, a precedent is forming. A senior professional within the market shared that a European sponsor originally requested the use of ABS structuring. Having seen the success in U.S. regions, where it has been demonstrated that once an asset class becomes scalable and financeable through repeat issuance, infrastructure debt ceases to depend on bank balance sheets and functions as a true capital markets product. 

Whilst there are still regulatory constraints and jurisdictional differences, certain products in the market can fit these newer structures, which, in turn, will support market flexibility. 

 Asset Manager Innovation: Discipline within a Dynamic Market 

Infrastructure debt in Europe has moved well beyond its origins as a conservative substitute for bank-led project finance. What began as a buy-and-hold, capital-preservation strategy has matured into a competitive, institutionalised asset class sitting at the centre of energy transition and essential infrastructure financing. 

Discussions with managers specialising in investment grade infrastructure debt highlight growing frustration as intense competition compresses pricing, creating a persistent “race to the bottom.” This dynamic is not unique to infrastructure debt, but reflects broader conditions across private credit, where elevated investor demand is driving tighter margins and a general weakening of covenant protection. In response, some senior debt platforms have expanded into higher-yield strategies to preserve returns, but for insurance capital, rated senior debt remains essential, not optional and platforms able to deliver investment-grade structures at scale are advantaged both in accessing cheaper capital and in maintaining long-term relationships. As the market becomes more structurally complex and if banks are increasingly producing structured tranches, those we have connected with have said they would actively purchase/participate in purchasing these opportunities. The senior debt market is therefore not only competitive but evolving. Differentiation will increasingly be defined not by deal access, but by the ability to structure insurance friendly, investment grade debt, deploy capital at scale efficiently, and navigate a landscape where access to the right type of capital, rather than yield alone, dictates opportunity.

It can also be said that the market is exhibiting pronounced cyclical behaviour. The enthusiasm for investment grade infrastructure debt that dominated 2021 has given way, in 2025, to a shift toward higher yield strategies. This is being driven less by a change in infrastructure fundamentals and more by relative value dynamics across credit markets. As yields have repriced upwards, investment grade infrastructure debt has struggled to compete on a standalone return basis, prompting capital to reallocate elsewhere unless structures or pricing adjust accordingly. Therefore, as opportunities expand further down the capital structure and deal structures become more complex, competitive advantage increasingly rests not on capital availability alone, but on origination capability, structuring expertise, and the ability to position platforms and teams ahead of the cycle rather than respond to it reactively. 

Managers are becoming creative in different ways, some have reviewed the fee structures, taking up front fees or ongoing management fees. Whilst others are incorporating blended finance and multi-tranche structures, allowing asset managers to invest across the capital stack from senior to mezzanine and, in some cases, preferred equity, while syndication capabilities historically reserved for banks are now increasingly in-house. Closer collaboration with private credit teams and the willingness to underwrite full ticket sizes have made institutional investors more competitive with traditional lenders. At the same time, managers from corporate credit are entering infrastructure, attracted by scale, duration, and liquidity, reflecting both excess capital in their original markets and the growth potential of infrastructure sub-strategies. One senior professional we connected with who made this transition shared that whilst there is a mindset shift, tool kits are, in his words easily applicable to the infrastructure market. 

This has driven greater creativity in structuring, including junior debt and structured equity solutions designed to enhance returns while preserving credit ratings. These structures are gaining traction, particularly in capital-intensive sectors, as they address funding requirements without unduly stressing balance sheets.

This evolution raises a broader question around team composition and skill sets. As structuring becomes more complex, there is a growing case for more diversified investment teams that incorporate professionals with corporate credit backgrounds and experience across CLO, ABS, and LBO structures. We believe this trend will continue and should be considered across platforms seeking to remain competitive in an increasingly sophisticated infrastructure debt market.

Operating at a different scale, are large asset managers with captive insurance platforms and access to multiple, flexible pools of capital are fundamentally altering how they interact with the broader market. Apollo exemplifies this model, building a multi-channel ecosystem that can internalise capital allocation, selectively remove exposure from bank balance sheets, and dynamically move risk across vehicles in ways banks cannot, while also distributing risk to broader capital markets. This balance sheet flexibility allows them to offer solutions on pricing, tenor, and certainty of execution that banks are often unable to match, albeit at a premium cost. The open question is whether this advantage drives them down the size spectrum or reinforces a partnership model with banks, in which managers increasingly act as capital providers and balance sheet complements rather than direct competitors.

However, something one senior professional doesn’t feel is being considered as thoroughly as it should is the critical issue of governance and risk management. As managers expand across the capital structure, the appropriate design and adherence to governance regimes is essential, particularly where different risk positions are managed by the same party. Investors need to scrutinise these arrangements rather than assume alignment, as the pool of individuals with deep experience managing problem loans or stressed exposures remains limited. Successful platforms will ensure their teams combine personnel with core infrastructure financing fundamentals and regulatory awareness, capable of navigating complex and potentially stressed situations. 

Insurance Capital: The Duration and Structuring Hunt 

Insurance capital has been central to the European infrastructure debt market since its inception, originally as a core source of non-bank senior lending, and it remains a key driver of growth. Beyond funding traditional investment grade senior debt, insurance capital underpins the next wave of infrastructure financing access to low-cost senior debt enables managers to layer more junior or structured solutions, supporting higher-yield strategies and more complex capital stacks.

Insurers continue to view infrastructure debt as a tool for long-duration, yield-enhancing portfolio diversification. While most capital remains invested in investment grade debt, there is growing debate over whether insurers should selectively participate in sub-investment grade strategies. This market is smaller and inherently more complex, but for managers with strong origination capabilities, deep sector expertise, and disciplined risk management, it offers attractive returns. 

Performance in this segment depends heavily on structured underwriting, asset selection, and active lifecycle management, rather than passive allocation. Regulatory and rating considerations remain central to insurer participation and have, particularly in the UK, driven the investment strategy to date. Platforms which integrate captive insurance capital with flexible multi-channel structures illustrate how insurers can optimise balance sheets, improve portfolio ratings, and generate returns that support higher premiums and ongoing capital growth. In turn, this reinforces the cycle of infrastructure market expansion.

Alongside rising allocations to infrastructure, insurers are simplifying internal teams and increasingly outsourcing portfolio construction, asset allocation, and execution. OCIO models, often discreet and substantial, are growing in prevalence. These mandates, frequently in the tens of billions, are increasingly awarded to large global platforms, materially influencing how infrastructure capital is deployed. The rise of OCIOs mirrors structural shifts seen across banks and asset managers capital efficiency is increasingly achieved through organisational design rather than balance-sheet scale. Centralised decision making, platform level underwriting, and scalable deployment enable securitised or structured approaches to infrastructure risk, but they also introduce challenges around governance, concentration, and oversight. 

In this context, competitive advantage is no longer determined solely by access to capital, it depends on the ability to staff teams with the right skill sets, professionals who combine origination, structuring, and capital markets expertise, capable of managing complex multi-tranche portfolios, optimising balance sheets, and executing at scale.

Ultimately, the next phase of infrastructure debt will be defined not just by capital availability, but by the platforms and teams capable of deploying it intelligently. Insurers that align regulatory, rating, and operational considerations with strategic talent will continue to underpin market growth, while those unable to adapt may find themselves structurally constrained.

Concluding Remarks

 What is emerging is a more flexible and institutionalised infrastructure financing ecosystem. Long dated risk is increasingly migrating toward institutions best positioned to hold it, while banks retain origination leadership by focusing on structuring, distribution, and capital efficiency. Infrastructure debt is transitioning from a relationship driven lending product into a scalable asset class supported by capital markets infrastructure. Yet it will remain inherently bespoke, the breadth of assets now classified as infrastructure and the pace of innovation ensure complexity persists. Competitive advantage will accumulate to platforms and teams that can respond quickly, structure creatively, and adapt ahead of new products and capital requirements rather than after they emerge.

Ultimately, the evolution of infrastructure debt is no longer defined by access to capital alone. Senior debt compression, the expansion into higher yield strategies, and multi-tranche structuring are forcing banks, asset managers, and insurers to rethink origination, risk management, and distribution. Insurance capital remains a critical anchor, but its effectiveness depends on regulatory aware, flexible platforms staffed by specialists who combine origination, structuring, and capital markets expertise. The winners will be those who align organisational design, talent strategy, and capital deployment ahead of the cycle. That said, participants will continue to operate with differing styles, constraints, and strategic objectives, and given the scale of capital required across the sector, there is likely capacity for multiple models to coexist, provided they are aligned with the evolving structure of the market.