The built environment under strain
For decades, buildings and infrastructure have been designed around a relatively stable set of climatic assumptions. Drainage systems were engineered for expected rainfall patterns, cooling systems designed for historical temperatures, and transport, energy, and water networks built around an environmental landscape of gradual change. Global heating defies these assumptions. As temperatures rise, rainfall becomes more volatile, and extreme weather events intensify, organizations are increasingly dependent on infrastructure that was designed for a different climate. The consequences of this extend well beyond physical damage, encompassing higher operating costs, increased business interruption risk, and greater workforce strain.
For buildings and infrastructure, perhaps one the most direct consequence of extreme heat consists of structural damage. Building materials, like all matter, are subject to thermal expansion: Temperatures increase, they expand; when temperatures drop, those same materials contract. As this cycle repeats, it weakens the material, eventually leading to cracks, faults, or failure. As temperatures become more extreme, these cycles become more pronounced, placing greater strain on materials, and increasing the risk of structural damage. Extreme temperatures can also age plastics, and accelerate metal corrosion, such as the steel beams that reside within many residential and commercial properties, and damage core equipment. Similarly, prolonged dry periods can cause soil shrinkage, further increasing the risk of destabilization and subsidence, especially in the case of older properties.
Despite this, the biggest threat from heat comes not through direct physical damage, but disruption. This can take various forms. For instance, where buildings are poorly ventilated, lack insulation, or are designed to be airtight, they often retain excessive levels of heat during periods of high temperatures. This can lead to the failure of heating, ventilation, and air conditioning (HVAC) systems, contributing to downtime, contractual disputes, or even reputational harm.
Disruption can also arise from outside the asset itself. Sectors such as steel manufacturing or conventional power generation are heavily reliant on water for cooling, often draw from rivers or desalinated seawater. As water temperatures increase, such as during periods of extreme heat, that cooling resource becomes less effective. In 2026, these conditions enforced shutdowns of multiple power plants across Europe, including those in France, Hungary, and Romania. Likewise, record low water levels in the Rhine have forced chemical and steel manufacturers to curb production – and even declare force majeure for certain product orders. These measures may limit damage in an emergency, but they can enact a significant toll on companies’ bottom lines. In July, French energy provider EDF announced that it expected a 10 per cent fall in earnings, citing heatwaves and reduced market prices among the drivers.
The consequences extend well beyond physical damage, encompassing higher operating costs, increased business interruption risk, and greater workforce strain.
Infrastructure and supply chain stress
The example of the Rhine illustrates a broader consequence of a hotter globe: infrastructure and supply chain fragility. Recent train derailments in the UK and Montreal have highlighted the threat of thermal misalignment, whereby extreme temperatures cause tracks to buckle – paralyzing the flow of goods and people. But it is waterways that are hardest hit. Prolonged droughts can reduce river discharge, increase sediment build-up, and expose submerged obstructions or bare sandbanks that cause vessels to run aground. This creates delays, disruption, and costly recoveries.
For organizations that depend on these waterways, the remedies are few. Lighter cargo may help to avoid grounding; in Europe, one chemicals manufacturer is reported to have reduced its loads by up to 70 per cent following record low water levels in the Danube. But this brings its own problems – including higher costs, longer lead times, and increased traffic. The same challenges face cargoes diverted via road and rail networks.
Such is the interconnectivity of global supply chains. A specific incident can have significant ripple effects, even for businesses located far away from the incident itself. Returning to the Danube, restrictions on river transit have driven up the cost of moving grain, oil, fuel, chemicals, and other bulk commodities to the Black Sea – costs which are passed on to buyers and end consumers. Similarly, seasonal low- and high-water conditions in North America are resulting in frequent draft restrictions and closures along parts of the Lower Mississippi – a major artery for goods moving from the US heartlands to New Orleans for international shipment. A recent report from the non-profit Big River Coalition (BRC), estimates the cost of a single 12-hour closure at as much as $3.8 million in lost economic output, escalating to $194.8 million over two weeks.
Human and behavioral impacts
People, as well as businesses, are bearing the brunt of a changing climate. As temperatures escalate, workforces face greater threats of heat exposure, dehydration, and associated risks. Affected employees may be more likely to perform poorly, and make errors that jeopardize the safety of themselves and their colleagues.
The threat is particularly high for employees in construction, agriculture, and manufacturing, where working patterns can regularly involve extended shifts under direct sunlight, creating significant risk of heat exertion or heatstroke. Many businesses in these sectors also employ transitional workforces, who may face greater risk if not properly acclimatized to extreme conditions. But employees across other industries are also affected – including those working in schools, hospitals, and other properties that may lack effective systems to regulate temperature conditions.
The same trends can also redefine consumer behaviors. In Europe, excessive temperatures in traditional summer holiday destinations are already forcing tourists to reconsider when, and where, they travel. In 2026, this has driven an uptick in travel to Nordic destinations, where so-called ‘cool-cations’ allow travelers to escape the heat. This has a rebounding impact on business models: Hotels in hotter locations may suffer reduced footfall, or consider investing in cooling technologies to ensure travel remains viable; meanwhile, the influx of tourists to previously quieter destinations is likely to impose additional operational strain.