Marsh Risk Scales Nimbus Facility to $2.7bn for Data Centres

Marsh Risk has scaled up its Nimbus insurance facility in response to accelerating data centre development worldwide.

The facility now provides up to US$2.7bn in project cover and delivers dedicated insurance for large-scale construction projects across the UK, US, Canada, Europe, Australia and New Zealand.

Operating as part of Marsh, the world's leading insurance broker and risk advisor, Marsh Risk introduced Nimbus in June 2025 to address growing demand for purpose-designed cover in digital infrastructure.

The facility could represent the first of its kind specifically structured for large data centre projects.

It is currently being used across construction sites in the UK, US and the Netherlands.

Comprehensive protection for infrastructure projects

Nimbus delivers comprehensive risk protection for clients, including coverage for business interruption and delay in start-up.

According to Marsh Risk, these protections could prove critical for data centre developers and operators navigating distinct challenges during the construction phase.

These challenges range from energy integration requirements to time-sensitive supply chains.

The facility draws on A-rated insurers from the Lloyd's market and additional company providers, offering access to substantial London market capacity.

This structure could enable developers and capital providers to obtain high-limit cover designed for complex construction projects that underpin AI, cloud and enterprise infrastructure.

Marsh Risk also delivers strategic support through its Global Digital Infrastructure team.

Drawing on expertise across cybersecurity, power and construction, the team provides guidance on capital protection and asset resilience throughout the data centre lifecycle.

Digital transformation fuels construction growth

Mike Mathews, Global Digital Infrastructure Leader at Marsh, says: “Demand for more powerful and efficient data centres is accelerating technological innovation, particularly around AI and machine learning.

“This will revolutionise the way we live and work and reshape economic landscapes over the next decade.

“Marsh is helping clients in this sector work with communities to develop business strategies that will enable them to grow sustainably.”

The expansion of digital infrastructure sits at the heart of Industry 4.0, the industrial transformation driven by automation, data and smart technologies.

As governments and businesses expand their digital operations, demand for resilient, energy-intensive data centres continues to rise.

Within this context, large-scale construction projects could carry emerging risks connected to environmental impact, energy access and operational uptime.

Nimbus could address these exposures through a combined facility supporting both developers and investors from project initiation through to delivery.

Mike continues: “By harnessing our global resources in critical interconnected areas such as capital management, construction, off-site power generation, environmental risk and operational resilience, Marsh is enabling data centre developers, operators and owners to strengthen their delivery and resilience.

“We are embracing the age of Industry 4.0.”

According to Marsh Risk, that support includes a coordinated approach to risk management, spanning construction cover and broader asset protection.

The firm positions Nimbus not only as an insurance solution but as part of a wider service offering to guide digital infrastructure clients as they scale operations.

By expanding Nimbus to US$2.7bn, Marsh Risk could increase insurer capacity for clients constructing complex digital infrastructure.

As data centre construction accelerates to meet growing AI and cloud demand, facilities such as Nimbus could help secure capital and reduce exposure across the project lifecycle.