Marsh Risk, an insurance brokerage, risk advisor and business unit of Marsh plc, has added significant underwriting capacity to its large data center construction insurance arm Nimbus, which currently provides up to $2.7 billion in limits, including start-up delay and business interruption coverage, for major projects in the UK, US, Canada, Europe, Australia and New Zealand.
Marsh Risk launched Nimbus in June 2025 as a “one-of-a-kind insurance provider” for large data center construction projects.
The facility supports digital infrastructure development while mitigating critical risks and providing stronger financial protection for Marsh Risk’s clients and their capital providers.
Nimbus is currently being deployed on numerous projects in the US, UK and the Netherlands.
Mike Mathews, global head of digital infrastructure at Marsh, commented: “The demand for more powerful and efficient data centers is accelerating technological innovation, especially around artificial intelligence and machine learning, which will revolutionize the way we live and work and reshape the economic landscape over the next decade.
“Marsh is helping clients in the industry develop business strategies in partnership with communities that enable them to grow sustainably.
“By leveraging our global resources in critical interconnect areas such as capital management, construction, off-site power generation, environmental risk and operational resiliency, Marsh helps data center developers, operators and owners enhance their delivery capabilities and resiliency as the Industry 4.0 era dawns.”
In addition to providing significant London market capacity through A-rated insurance companies, Marsh’s global digital infrastructure team provides expertise in construction, cybersecurity, energy and power to help clients protect capital, manage assets and expand.