Natural Catastrophe Exposure: A Critical Inflection Point for Digital Infrastructure

Natural Catastrophe Exposure: A Critical Inflection Point for Digital Infrastructure
April 15, 2026 11 mins

Natural Catastrophe Exposure: A Critical Inflection Point for Digital Infrastructure

Natural Catastrophe Exposure: A Critical Inflection Point for Data Centers

Natural catastrophe risk is becoming a defining constraint of digital infrastructure development. Early planning decisions can make or break insurability — dictating how facilities withstand extreme weather and secure insurance capacity in a rapidly expanding market.

Key Takeaways
  1. Nat cat exposure is rising sharply: By 2050, 20-64% of global data center campuses could face high physical damage risk from extreme weather.1
  2. Growth has already brought unprecedented insurance capacity needs. While those are being addressed successfully today, future loss activity and further growth necessitate continued action and innovation.
  3. Working with the right risk and insurance partners to embed nat cat risk management early on can unlock favorable insurance terms on a sustainable basis, enabling long-term operational continuity.

Table of Contents

  1. Introduction

  2. How Nat Cat Risks Uniquely Disrupt Data Centers

  3. When Location Becomes a Liability: Data Center Hubs and Nat Cat Risks

  4. Key Questions as Nat Cat Risks Strain Digital Infrastructure Insurance Limits

  5. Nat Cat Risk Management Strategies for Tomorrow’s Data Centers

Climate change and natural disasters are now in the top 10 global risks facing businesses — with digital infrastructure in the eye of the storm.

Amid the artificial intelligence boom, campuses and portfolios regularly reach $10-50 billion in total replacement value, sometimes concentrated at a single site. Campuses developed in high-risk regions are uniquely exposed to losses from natural catastrophes, as well as growing climate risk.

Severe convective storms — including tornadoes, thunderstorms and hail — as well as earthquakes, hurricanes, floods and wildfires can instantly derail construction, disrupt operations, and drive up insurance costs and capacity balances. Some of the largest projects are seeking unprecedented levels of insurance capacity, where even modest nat cat exposure can push cost and market friction higher than anticipated.

Stakeholders must consider nat cat exposure from the very beginning of a project. This means risk modeling in site selection, building separation, and overall resilient design and engineering — which are key because:

  • Relocating projects from high-risk regions can be difficult if skilled labor, power infrastructure, water and land in lower-risk areas are unavailable.
  • Foreseeable regional events may not be fully excluded under force majeure in some service-level agreements, so the tenant would expect the owner to invest in design and mitigation.

Establishing an informed nat cat strategy and gaining the support of trusted insurance advisors can help future-proof digital infrastructure projects — safeguarding insurability and long-term operational continuity.

$127B

Global insured losses in 2025 were 27% above the 21st century average — driven by the third-highest severe convective storm losses on record in the U.S.

Source: Aon’s 2026 Climate and Catastrophe Insight

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The significance of natural catastrophe risk for data centers is often overlooked because we haven’t yet seen a precedent-setting major loss event. Risk assessment today is often oversimplified and traditional solutions don’t cut it for the scale and complexity of the assets and values at risk. Stakeholders need bespoke risk management strategies tailored to each company and campus’ exposures.

Daniel Raizman
Managing Director and Global Head of Client Engagement, Climate Risk Advisory

Impact Pathways: 5 Ways Nat Cat Risks Uniquely Disrupt Data Centers

  • 01
    Engineering and Design Sensitivities

    Data centers require more rigorous design and construction standards than typical commercial properties — including specialized building separation, resilient materials and nat cat‑oriented engineering — all of which significantly influence insurability.

  • 02
    Concentrated Value

    Single sites can hold unprecedented concentrations of high-value equipment (e.g., core and shell, support structures and chips/GPUs), making even localized nat cat events capable of producing multi‑billion‑dollar losses.

  • 03
    Downtime and Business Interruption Exposure

    Even brief outages carry severe financial and reputational consequences for operators. Nat cat hazards heighten the risk of prolonged downtime and raise the stakes for robust risk assessment and mitigation.

  • 04
    Aggregation Risk

    Closely clustered campuses amplify the potential for correlated losses. Insurers are increasingly sensitive to aggregation, especially where nat cat hazards are the primary drivers of probable maximum loss.

  • 05
    Power Vulnerability

    Floods, earthquakes, hurricanes, tornados, wildfires and ice storms can cause extended power outages. Understanding the level of resilience and redundancy of the power grid is important for both site selection and backup power planning.

When Location Becomes a Liability: Data Center Hubs and Nat Cat Risks

  • 10%+

    Asia Pacific is the fastest growing region for data centers globally, yet it has some of the greatest risks. More than 10% of data centers in-region are already considered high‑risk due to nat cat exposures.

  • 3-4x

    Insurance costs for data centers around the world could triple or quadruple by 2050 without adequate mitigation and adaptation.

    Source: XDI Systems

Key Questions as Nat Cat Risks Strain Digital Infrastructure Insurance Limits

  • What's the current state of the digital infrastructure insurance market?

    Digital infrastructure is widely viewed as a once‑in‑a‑generation growth engine — and many insurance markets are eager to participate. Yet the scale of new developments is already testing the limits of what the market can sustainably support. Builders risk placements for today’s large campuses often exhaust insurer capacity, with the traditional market topping out at $8-9 billion per project. Anything larger becomes challenging to insure — and that's before accounting for nat cat exposure.

    Terence Bohan, Property Broking Officer at Aon Risk Solutions in the United States, summarizes the market dynamics: “We are in the next industrial revolution. Risk and capital demands for data center projects are reaching heights never seen before in property insurance markets.”

  • How do nat cats add pressure to the market?

    While some insurers are “all in” on the boom, especially with the current soft property market, others are more conservative. Underwriting teams know they’re venturing into uncharted territory with billions concentrated in single locations where aggregation risk is unprecedented. A tornado, hailstorm, earthquake or wildfire could severely damage a data center in minutes — a problem that becomes exponential in mega‑campus clusters.

    Even a nat cat loss that doesn't specifically impact any major data centers could dramatically shift the current market, leading to sharp reductions in line sizes or total available capacity globally. Insurance markets need to adapt: Shifting digital infrastructure into mainstream asset classes could enable access to larger and more conservative pools of capital, in turn reshaping nat cat capacity and ensuring sustained growth.

  • Why should nat cat resilience be embedded into data centers today?

    The market is already signaling what’s coming next. Data centers located in high-risk nat cat zones could soon see elevated insurance premiums and challenging negotiations with underwriters that ultimately affect operations and financial planning.

    Reinsurers are already requesting more granular data on site clustering, project size and line sizing due to growing concerns about risk accumulation. Treaty renewals were stable this year, but that stability may not hold as concentration risk grows.

    Brian Hearst, Aon’s Global Digital Infrastructure CAR/Builders Risk Leader, observes that reinsurers will likely reduce capacity over time unless stakeholders can demonstrate meaningful mitigation. Carriers, in turn, may demand stricter risk mitigation strategies.

Engage Early with Insurance Advisors to Get Ahead of Market Challenges

Early involvement of experienced broker and climate risk teams equips digital infrastructure stakeholders to negotiate more favorable insurance terms and better evaluate physical risk exposures.

Here’s how Aon can help:

  1. Campus Design: Aon specialists map and analyze campus configurations to potentially classify buildings as separate insured locations — expanding available coverage limits by enabling each location to attract its own line from the same carriers. This design‑led approach helps maximize capacity for large or clustered projects for both construction and operational property coverage. Mapping out how a business interruption (BI) policy would respond to natural catastrophe and climate-driven scenarios in the design stage is also key to ensure that a robust post-loss strategy is in place.
  2. Financing Review: In reviewing loan covenants, lease agreements and lender insurance requirements, Aon frequently identifies misalignments between project expectations and what the market can realistically support. Early broker involvement helps address unrealistic insurance requirements upfront and ensure funding without costly delays.
  3. Insurance Structuring: Aon aligns builders risk and first‑year operational property placements on a lifecycle basis with the same carriers to avoid a mid-project capacity shortfall. In parallel, Aon brokers engage global capital markets, institutional investors and alternative capital providers to create new risk‑bearing structures capable of supporting multi-billion-dollar limits.
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The sooner we get in the door, the better — so that digital infrastructure stakeholders have their eyes wide open to risk, are better prepped for tough negotiations and can unlock capacity that might otherwise be out of reach.

Taronne Tabucchi
Catastrophe Risk Advisor, United States
When Analytics Change the Nat Cat Risk Conversation for Data Centers

Case Study

When Analytics Change the Nat Cat Risk Conversation for Data Centers

A developer faced pushback from lenders and underwriters over tornado and hail exposure at a new data center campus. To shift the conversation, Aon built a customized risk assessment that challenged the third‑party maximum foreseeable loss view and incorporated event probability and cross‑site aggregation. As negotiations progressed, Aon refined the analytics to pinpoint overlapping risks and clarify the true exposure picture. The enhanced insight eased lender concerns, unlocked insurance capacity and set a repeatable workflow for future projects.

Nat Cat Risk Management Strategies for Tomorrow’s Data Centers

In the face of evolving climate and weather patterns, data centers need smarter modeling and scenario-planning to stay insurable — and operational — over the long term.

“Data centers are laser-focused on minimizing operational downtime, but projects need to bring that same rigor to natural catastrophe risk,” explains Daniel Raizman, Managing Director and Global Head of Client Engagement for Aon’s Climate Risk Advisory. “By considering both in a holistic conversation about risk tolerance, stakeholders can make more informed decisions and build resilience from day one.”

Resilience strategies — and their insurance implications — include:

  1. Site Due Diligence
    Evaluating nat cat risks during site selection can unlock insurability and establish long-term resilience before design and construction decisions are finalized. Vulnerability assessment tools can connect identified hazards to the site’s specific weaknesses and identify mitigation strategies.
  2. Risk Modeling
    Accurately quantifying nat cat risks helps stakeholders mitigate potential premium penalties tied to high-risk locations. Organizations can directly compare how much less risky — and thus less expensive to insure — a given site is compared to another, even if they’re only 100 miles apart. Demonstrating variations in risk profiles is particularly important in markets with significant premiums or penalties for high nat cat exposure.
  3. Design and Engineering
    Early consideration of nat cat risks in the engineering, design and zoning of data centers (e.g., campus layout and hall spacing) can mitigate exposure to weather, as can specialized construction methods and nat cat-oriented building standards. When negotiating builders risk, a thorough understanding of nat cat exposures can help secure the right coverage at favorable terms.
  4. Alternative Risk Solutions
    Products like captives and parametric insurance can supplement traditional insurance coverage for data centers in nat cat-prone areas.
  5. Broker Support
    Sophisticated risk quantification backed by practical market knowledge helps stakeholders understand both the severity and likelihood of risks, and how to effectively communicate those risks to underwriters.
  6. Claims Preparation
    Effective claims preparation — especially around BI and aggregation losses — ensures stakeholders can evidence the full impact of nat cat disruptions and recover more quickly.

“Risk management runs through every phase of the digital infrastructure lifecycle, from design to policy negotiation to operations,” explains Taronne Tabucchi, Catastrophe Risk Advisor for Aon in the United States. “Aon’s value is in being plugged in at every step.”

Contact us to unlock growth, resilience and strategic advantage for the full digital infrastructure lifecycle — from planning and construction through operation.

Aon’s Thought Leaders

Paulo André Correia De Novaes
Managing Director of Digital Infrastructure, Latin America

Vincent Banton
Head of Construction & Infrastructure, Asia Pacific

Terence Bohan
Property Broking Officer, Aon Risk Solutions, United States

Jon Chapman
Head of Construction & Infrastructure Industry Specialty, Europe, the Middle East and Africa

Mark Ellis
Director, Property Risk Consulting, Natural Hazards, United States

Brian Hearst
Global Digital Infrastructure CAR/Builders Risk Leader

Daniel Raizman
Managing Director and Global Head of Client Engagement, Climate Risk Advisory

Caroline St. Clair
Digital Infrastructure Practice Leader, North America

Taronne Tabucchi
Catastrophe Risk Advisor, United States

1 2025 Global Data Centre Physical Climate Risk and Adaptation Report, XDI Systems

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This document is not intended to address any specific situation or to provide legal, regulatory, financial, or other advice. While care has been taken in the production of this document, Aon does not warrant, represent or guarantee the accuracy, adequacy, completeness or fitness for any purpose of the document or any part of it and can accept no liability for any loss incurred in any way by any person who may rely on it. Any recipient shall be responsible for the use to which it puts this document. This document has been compiled using information available to us up to its date of publication and is subject to any qualifications made in the document.

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