Extreme heat in Europe: Which countries face the biggest costs?

Extreme Heat in Europe: Which Countries Face the Biggest Costs?

Extreme heat in Europe - As climate change intensifies, Europe's leading economies are bracing for significant economic challenges due to rising temperatures, according to a recent report by Allianz Trade. The study highlights how extreme heat could act as a growing obstacle to growth, primarily through diminished worker efficiency and heightened energy demands. By 2030, the cumulative loss of GDP in the nations most vulnerable to heatwaves may reach between 5% and 7%, with France emerging as the country at highest risk. The report forecasts a potential $240 billion in economic losses for France over the next five years, followed closely by Italy at $147 billion, Germany at $131 billion, and Spain at $120 billion. In contrast, Japan’s projected losses are even more substantial, estimated at $354 billion.

Methodology and Climate Trends

The analysis by Allianz Trade is grounded in projections of steady temperature increases between 2026 and 2030. Researchers simulated scenarios where conditions mirror the peak heat levels recorded in each country’s five hottest years from 2014 to 2024. This approach allows for a realistic assessment of future impacts, emphasizing the growing frequency and intensity of heatwaves. The findings align with warnings issued by the European Central Bank (ECB), which has long recognized the economic consequences of climate-related disruptions.

"Global warming and the increase in extreme weather events cause substantial economic damage," said ECB Chief Economist Philip R. Lane at the Climate, Nature and Monetary Policy Conference in Frankfurt in May. He noted that recent studies indicate global GDP per capita would be over 20% higher today if warming had not occurred since 1960. This translates to a 0.3% annual reduction in growth rates during that period, underscoring the long-term impact of climate change on economic performance.

The report identifies several sectors where heatwaves exert their most severe toll. Labor productivity, for example, is expected to decline sharply as temperatures surpass 30°C. For every additional degree above this threshold, productivity falls by approximately 3%, while energy demand increases by 1.2%. These effects are driven by physical exhaustion, mental fatigue, and disrupted sleep patterns among workers. Industries reliant on human labor—such as construction, manufacturing, logistics, and agriculture—are particularly at risk.

Energy systems also face mounting pressure. With heatwaves driving up electricity consumption, the demand for cooling surges, straining power generation capacity. Europe’s current energy mix, which depends heavily on thermoelectric sources like gas (51%), nuclear (18%), and coal (17%), becomes increasingly vulnerable. In 2019, for instance, France’s nuclear plants experienced reduced output due to cooling constraints, exacerbating supply shortages and causing electricity prices to spike. Such events highlight the fragility of energy infrastructure in a warming world.

Broader Economic Implications

The economic consequences of extreme heat extend far beyond immediate productivity losses. The report warns that investment is likely to suffer more than consumer spending, with fixed capital formation projected to drop by an average of 8% in affected countries. This decline occurs as businesses delay major projects or reduce spending in response to uncertain returns on capital, creating a self-sustaining cycle that weakens long-term growth prospects.

Heat-related shocks may also fuel stagflationary pressures, combining inflation with rising unemployment. Inflation could climb as energy and cooling costs increase, while unemployment may rise due to reduced labor availability during peak heat periods. Central banks, particularly those in the eurozone, face complex trade-offs as they attempt to balance inflation control with growth stimulation in economies experiencing varying levels of climate exposure.

Public finances are expected to feel the strain as well. Lower economic output translates into diminished tax revenues, while governments must allocate more funds to inflation-linked benefits, healthcare services, and emergency repairs. The report estimates annual tax revenue losses of 1.8% in France, 1.3% in Italy and Spain, and 0.7% in Germany. These losses could worsen fiscal balances, with the average annual GDP decline projected to be around 0.5% for affected nations.

Risk of Fiscal Crises

Italy and Spain are especially vulnerable to breaching the EU’s Maastricht deficit limit when heat-related costs are factored in. France, already anticipated to have a budget deficit of 4.9% of GDP, could see an additional burden equivalent to several percentage points in losses. The combination of reduced economic output and rising public expenditures threatens to destabilize national budgets, requiring policymakers to rethink fiscal strategies.

Transport infrastructure is another critical area at risk. High temperatures can damage roads, railways, and other systems, leading to service interruptions and higher maintenance costs. These disruptions may further hamper supply chains and increase transportation expenses, compounding the economic strain. The report also points to the need for increased resilience in infrastructure planning to mitigate future risks.

As the climate crisis accelerates, the economic toll on Europe’s major economies is set to intensify. The interplay of falling productivity, rising energy demands, and infrastructure vulnerabilities creates a multifaceted challenge. While the report focuses on GDP losses, it also underscores the broader implications for investment, inflation, and public finance. These factors collectively threaten to slow growth and create new economic pressures, requiring coordinated responses from governments and central banks.

Global Perspective

On a global scale, the report notes that the proportion of working hours lost to heat stress is projected to rise from 1.4% in 1995 to 2.2% by 2030. South Asia and West Africa are identified as regions with even higher losses, at 5.3% and 4.8%, respectively. This regional disparity underscores the uneven distribution of climate risks, with Europe’s economies facing a unique set of challenges due to their reliance on thermoelectric power and labor-intensive industries.

For policymakers, the key takeaway is the urgent need to integrate climate adaptation into economic planning. Addressing the immediate effects of heatwaves while preparing for long-term shifts in productivity and energy demands will be critical in safeguarding economic stability. The report serves as a stark reminder that climate change is not just an environmental issue but a profound economic one, demanding proactive measures and strategic investments to mitigate its impact.