Key Takeaways
Severe weather has overtaken construction accidents and equipment failure as the primary threat to the $3 billion data center builders' risk portfolio at Zurich Insurance, forcing the AI infrastructure industry to rethink where and how it builds.
"Severe weather is no longer something that can be treated as a background exposure," Patrick McBride, Head of International Construction at Zurich, said. "It is one of the first things we and the owners we work with look at."
The shift comes as 64 percent of data center capacity under construction this year is moving outside traditional hubs like Northern Virginia into so-called frontier markets such as West Texas, Tennessee, Wisconsin and Ohio, McBride said. These areas face heightened risk of tornadoes, hail and high winds that can damage vast roofs with exposed HVAC systems, cooling towers and solar installations. A study by climate risk analytics firm First Street found that 79 percent of global data center capacity faces elevated risks from acute climate hazards including flooding, extreme winds and wildfires that can disrupt operations and drive up insurance and repair costs.
The stakes extend beyond construction insurance. Cooling already accounts for roughly 40 percent of data centers' energy use under normal conditions, and that share rises during extreme heat events — precisely when air conditioning demand strains the same power grids. "Data centers need the most energy exactly when the grid has the least available to give," Mishal Thadani, CEO and co-founder of AI software platform Rhizome, said. He pointed to Turin, Italy, where 38-degree-Celsius temperatures in May caused repeated blackouts by putting underground cables under thermal stress. "Now add facilities that each pull as much power as a hundred thousand homes," Thadani said.
The Insurance Calculus Shifts
Zurich's data now shows that severe weather drives a third of all losses in its U.S. data center builders' risk portfolio, up from a minor factor just a few years ago. The trend is forcing insurers to reassess premiums for facilities in regions with limited historical weather data — precisely the frontier markets where much of the new AI buildout is concentrated. "Now we have $3 billion worth of assets with over a mile worth of exposure to these events," McBride said.
"It's not a matter of 'if' climate risks will impact the digital infrastructure revolution," Joe Macejak, U.S. property digital infrastructure leader at Marsh Risk, said. "But rather how clients and stakeholders in the digital infrastructure industry identify, quantify, and manage these climate risks within their respective tolerances." Failure to do so, he added, could threaten "the capital stacks that are fueling the AI-driven data center revolution."
Cooling Innovation as a Competitive Edge
Hyperscalers and their suppliers are responding with design changes. Microsoft told CNBC it designs data centers to operate "reliably in a wide range of environmental conditions" using site selection, redundant systems and real-time monitoring. Nvidia said last week that its new AI servers can run their cooling liquid at 45 degrees Celsius, up from previous lower thresholds. The company noted that raising chiller temperatures by just one degree can cut cooling energy costs by about 4 percent.
Aaron Lewis, chief commercial officer at HVAC company Johnson Controls, said he recently saw a client in Europe add a "climate change factor" to its data center specifications for the first time, designing facilities for projected temperature rises rather than historical averages. "The pace of innovation driven by the data center boom is going to allow us to operate under some of these conditions far into the future," Lewis said.
For investors, the implications cut both ways. Data center REITs such as Digital Realty and Equinix face potential margin pressure from rising insurance premiums and cooling costs in frontier markets. At the same time, companies providing climate-resilient infrastructure — from advanced cooling systems to weather risk modeling — stand to benefit as operators race to harden their facilities against a threat that is no longer theoretical.
This article is for informational purposes only and does not constitute investment advice.
