Marsh Risk has increased the capacity of its Nimbus insurance facility, which now offers limits up to US$2.7 billion for large-scale data centre construction projects. The expanded coverage includes delay in start-up and business interruption protection.
The facility covers projects in the UK, US, Canada, Europe, Australia, and New Zealand. Nimbus first launched in June 2025 as a dedicated insurance product for data centre construction.
According to the company, Nimbus is currently being deployed on projects in the US, UK, and the Netherlands. The facility draws capacity from a panel of A-rated insurers from Lloyd's and company markets.
Marsh's Global Digital Infrastructure team offers services across construction, cybersecurity, energy, and power sectors. The team works with clients across the digital infrastructure ecosystem on capital protection and asset management.
Mike Mathews (pictured above), global digital infrastructure leader at Marsh, said the expansion responds to growing demand in the sector.
"Demand for more powerful and efficient data centres is accelerating technological innovation, particularly around AI and machine learning, which will revolutionise the way we live and work and reshape economic landscapes over the next decade," Mathews said.
He added that Marsh is working with clients to develop business strategies that support sustainable growth within their communities.
Read more: Aon adds US$1 billion to data centre insurance program amid AI boom
Mathews noted that the company is drawing on resources across 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 as we embrace the age of Industry 4.0," he said.
The expanded Nimbus capacity positions Marsh ahead of competitors in the data centre insurance space. Notably, Aon added US$1 billion to its Data Centre Lifecycle Insurance Program in January 2026, bringing its total capacity to US$2.5 billion.
