Alternative Capital Steps In for Data-Center Catastrophe Coverage
Insurance-linked securities (ILS) providers are entering a widening gap in the re/insurance sector as the need for catastrophe coverage rises alongside the boom in AI-driven data centers. The swift expansion of these facilities—now among the largest new categories of insured property value in the U.S.—has created demand for alternative capital sources to cover risks that traditional insurers often cannot fully absorb.
Lenders frequently require full insurance and reinsurance coverage for these projects, which can individually represent tens of billions of dollars in value. Clusters of facilities in the same regions face shared exposure to localized weather threats, including hail, tornadoes, and severe storms.
Michael Stahel, a partner and portfolio manager at LGT ILS Partners, explains that while operational hazards, such as cyber incidents or equipment failures, are handled by specialized insurers, the physical risk exposure is far broader. “Data centres are becoming one of the largest new sources of insured property value in the US. The rapid expansion of AI and cloud infrastructure is driving massive investment into hyperscale campuses, creating substantial demand for insurance and reinsurance coverage,” Stahel said. “Adding: ‘As project sizes continue to increase, alternative capital is well positioned to complement the need imposed on traditional insurers and reinsurers.’”
ILS Market Targets Data-Center Risks
The ILS market, which focuses on rare but severe natural catastrophe events, is well-suited to meet this demand. Stahel notes that traditional reinsurers are constrained by capacity issues as data center values climb. Brokers have already formed specialized teams to manage these submissions, indicating a shift toward treating data centers as a distinct business segment.
“Supporting that growing demand for catastrophe capacity is where we believe alternative capital can play a particularly important role,” Stahel told Artemis.
Accumulation Risk Threatens Multiple Facilities
However, accumulation risk poses the most significant challenge. Many hyperscale campuses are built in the same regions due to energy availability and land costs, increasing the chance of simultaneous losses from extreme weather. “Understanding and controlling accumulations is the defining underwriting challenge of this business line,” Stahel said. “Hence, large severe weather events could potentially affect multiple facilities simultaneously.”
Data centers also present unique risk profiles that standard catastrophe models do not fully address. Unlike traditional property portfolios, these facilities feature concentrated values and operational dependencies requiring customized underwriting approaches. LGT ILS is developing its own risk assessments alongside vendor models, with a focus on location-specific threats and portfolio-wide accumulations.
Investors Weigh Profit vs Underwriting Discipline
For ILS investors, this new market segment offers both opportunity and risk. While the sector could absorb growing demand for catastrophe coverage, profitability depends on disciplined underwriting, not just increased capacity. Stahel stresses that strict risk selection, clear coverage terms, and tight accumulation controls will determine whether this emerging line remains viable. “The insurance industry is already facing situations where a meaningful portion of data centre values remains difficult to place in the traditional market due to capacity constraints and concentration concerns,” he said. “As project sizes develop and continue to increase, we expect alternative capital to play an increasingly important role alongside traditional insurers and reinsurers.”
LGT ILS has assembled a specialized team to analyze data center exposures in detail. The initiative aims to evaluate risk factors, accumulation patterns, and capital needs before allocating funds. “At LGT ILS, we have established a dedicated task force to assess this emerging business line in greater depth,” Stahel said. “The objective is to understand the risk characteristics, accumulation trends and capital requirements of data centre exposures, and to determine where and how we can prudently allocate capital within this growing market opportunity.”
The team’s findings will determine whether ILS providers can expand their involvement. Stahel acknowledges that some data center projects may already surpass traditional reinsurance limits, pushing brokers to explore alternative solutions. “The key is not simply to model the hazard, but to understand how these very large values interact with the rest of the portfolio,” he said.
