Why Private Capital Is Flooding Global Infrastructure: Key Takeaways from McKinsey’s 2026 Report

Global Infrastructure Investment Demand Is Unprecedented

The McKinsey Global Private Markets Report 2026 estimates that by 2040 the world will need about $106 trillion of infrastructure investment to support population growth and technological progress. The required capital spans traditional assets such as roads, ports, bridges, and power grids, as well as emerging cross‑sector projects like charging stations, fiber‑optic networks, and data centers. Energy and power alone demand roughly $23 trillion, driven by the global energy transition and rising consumption.

2025 Private Capital Inflows Reach Record Levels

Private capital is moving quickly to fill the gap. In 2025, global infrastructure closed‑end funds raised close to $200 billion, a 60 % increase over 2024 and surpassing the 2022 record of $1.8 trillion. Deployments accelerated from $95 billion in 2023 and $126 billion in 2024 to nearly $200 billion in 2025. Regional performance varied: North America saw fund‑raising surge by about 285 %, Europe grew 65 %, while Asia‑Pacific experienced a slowdown. Large “mega‑funds” with committed capital over $5 billion are driving these flows.

Why Investors Are Boosting Infrastructure Allocation

McKinsey surveyed roughly 300 global limited partners. Fifty‑one percent plan to increase infrastructure allocations over the next three years, outpacing intentions for acquisitions (35 %) and real estate (30 %). The main motivations are portfolio diversification (68 %), higher expected returns (52 %), and strong asset performance (48 %). Limited partners are shifting from traditional “core” strategies toward “core‑plus” and “value‑added” approaches. In 2025, core‑plus funds grew about 390 % while value‑added strategies rose roughly 30 %; core‑only allocations modestly declined.

Signals of a Maturing Infrastructure Market

The report shows the sector is entering a mature phase. Unallocated capital (“dry powder”) fell to 23 % of assets under management by mid‑2025, roughly half the peak of the previous decade. Transaction volume grew 23 % in 2025, even though the number of deals fell 24 %; average deal size rose 78 %, and large‑fund raises above $10 billion accounted for a sizable share of capital. Investment themes have broadened from traditional assets to cross‑sector projects such as energy‑digital, digital‑transport, and energy‑transport integrations (e.g., data‑center power supply, 5G corridors, sustainable aviation fuel from waste).

Longer Holding Periods Bring New Challenges

Infrastructure projects now have longer lifecycles. The average holding period increased from 3.1‑3.3 years (2017‑2022) to 3.5‑3.8 years (2023‑2024). Liquidity pressure is rising; the median distributed‑to‑paid‑in (DPI) fell to about 13 %, a multi‑year low. Investors are focusing more on net cash returns and internal rate of return (IRR).

Active Value Creation Becomes Critical

Leading fund managers are accelerating the shift toward active value creation rather than relying solely on market tailwinds. They are using operational improvements and capital productivity to generate real alpha. The report highlights that infrastructure, once lagging in digitalization, is now a prime AI application arena. Generative AI scheduling tools can simulate multiple project scenarios, optimize resource allocation, and shorten construction cycles for renewable energy projects, directly boosting IRR. AI is being applied across the asset lifecycle—from site selection and permitting to predictive maintenance, pricing strategies, and business expansion.

Private Capital Will Continue to Power Global Growth

Overall, McKinsey paints a clear picture: massive infrastructure funding needs are being met by private capital at record speed, and the market is maturing. Despite longer holding periods and higher return expectations, leading investors are leveraging scale, cross‑sector innovation, and AI‑enabled solutions to drive sustainable value creation. Private capital is set to remain a key engine for global economic growth, helping the world navigate energy transition, digitalization, and sustainability challenges.