Going Beyond: The Economic Case for Climate Resilience

Introduction

Climate change is becoming a material economic and investment consideration across Europe, with extreme heat emerging as one of the most significant physical climate risks. The heatwaves experienced across Europe should be viewed as part of a longer trend, rather than isolated events. They now generate macroeconomic shocks that can simultaneously affect public health, labour productivity, agricultural production, energy systems, transport networks, infrastructure and government finances, with direct implications for economic growth, fiscal sustainability and sovereign creditworthiness. As Europe continues to warm faster than any other continent, a country’s ability to adapt to these disruptions is becoming an important determinant of long-term economic resilience.

The economic implications are already substantial. According to the European Environment Agency, weather- and climate-related events have caused approximately €822 billion in economic losses across Europe since 1980, while extreme weather has been associated with around 441,000 fatalities.¹Heatwaves account for the majority of these deaths, highlighting the growing human, economic and societal costs of prolonged periods of extreme heat. More recently, climate-related economic losses in the European Union have remained above €40 billion annually since 2021, underscoring the persistent fiscal and economic burden associated with increasingly frequent extreme weather events.²

The growing interaction between extreme heat and drought further reinforces the investment case for resilience. Analysis published by World Weather Attribution found that the European summer of 2026 combined exceptional heat, rainfall deficits and rapidly intensifying drought conditions across large parts of the Continent. The resulting impacts extended beyond environmental damage, disrupting economic activity through lower agricultural production, constrained inland transport, pressure on energy generation and reduced water availability. Eurostat data also show that household energy consumption for space cooling in the European Union increased from 15 petajoule (PJ) in 2010 to more than 80 PJ in 2024, illustrating how climate change is already reshaping long-term patterns of energy demand.³ For fixed income investors, climate resilience is becoming relevant not only for assessing sovereign credit quality, but also for understanding the long-term drivers of sovereign financing costs. Countries that invest early in climate adaptation and resilience may be better positioned to limit future economic losses, contain fiscal pressures and strengthen their long-term credit fundamentals.

The Sovereign Environmental, Social and Governance (ESG)-Resilience Connection

Assessing sovereign resilience requires more than measuring climate exposure alone. While many climate assessments focus primarily on identifying countries that are most vulnerable to physical risks, investors also need to understand which countries are best equipped to manage and adapt to those risks. For sovereign investors, resilience depends not only on environmental conditions, but also on the strength of institutions, fiscal capacity, infrastructure, public services and policy frameworks. This requires a multidimensional approach that captures both a country's exposure to climate risks and its ability to respond.

Franklin Templeton Fixed Income’s (FTFI) Global ESG Sovereign Model provides a useful foundation for assessing sovereign resilience. While originally developed to support sovereign investment decisions, many of its indicators capture the ability of countries to absorb shocks, adapt to structural change and maintain economic, fiscal and institutional stability over time. Rather than measuring climate risk in isolation, the model helps distinguish between countries that are merely exposed to climate risks and those that are better positioned to manage them. This is particularly relevant as extreme heat, drought and other physical climate risks affect economic growth, infrastructure, public finances and sovereign credit fundamentals.

Although the Global ESG Sovereign Model is designed as a global framework, this article applies its methodology to a European context. This regional focus reflects the emphasis on extreme heat as an increasingly material economic and investment risk across Europe, where climate impacts are already affecting infrastructure, public health, energy systems and fiscal priorities. Using a global model to assess European case studies provides two advantages: It preserves a fairly consistent cross-country analytical structure while allowing the discussion to focus on the specific resilience challenges faced by European sovereigns. In this sense, the model serves as the analytical foundation, while the case studies illustrate how its core dimensions of exposure and management capacity become visible in a regional investment context.

Unlike many climate vulnerability assessments that primarily focus on physical exposure, the FTFI Global ESG Sovereign Model combines measures of exposure with indicators of institutional, fiscal and social capacity, providing a more comprehensive view of sovereign resilience. A key strength of the model is its distinction between Risk Exposure and Risk Management. Risk Exposure captures structural vulnerabilities, such as climate conditions, water availability, agricultural dependency or trade vulnerability. Risk Management assesses the capacity of institutions and public policy to respond through such as fiscal space, government effectiveness, infrastructure quality, health care performance, water management and energy sustainability. This distinction is particularly valuable from an investment perspective: Countries may face similar climate risks, yet present very different sovereign risk profiles depending on their capacity to prepare for, absorb and recover from climate-related shocks.

The table below summarizes how the model's indicators contribute to different dimensions of sovereign resilience and why they are relevant from an investment perspective.

This framework is fairly consistent with the broader resilience lens adopted in investment analysis. ESG indicators help identify structural risks and the quality of their management, while resilience focuses on how these characteristics translate into economic and financial performance under stress. Applied to sovereign analysis, this framework helps explain why countries facing similar physical climate risks can experience very different economic and fiscal outcomes. For FTFI portfolio managers, these insights can help identify sovereigns that may be better positioned to withstand climate-related shocks, maintain fiscal stability and preserve long-term credit quality.

Case Studies

The following case studies should therefore be read as European illustrations of a broader global framework: They show how the model’s distinction between risk exposure and risk management can help investors assess not only where climate risks are rising, but also which sovereigns appear better equipped to manage them. They examine how three European countries illustrate different dimensions of sovereign resilience in a hotter climate. France demonstrates how extreme heat can rapidly translate into economic disruption, fiscal pressures and reconstruction needs. The United Kingdom demonstrates the growing investment challenge of adapting public infrastructure designed for a cooler climate. Germany illustrates how the effectiveness of adaptation depends not only on the scale of investment, but also on how capital is allocated to reduce long-term vulnerabilities and system costs.

Together, these examples show that resilience is no longer simply an environmental objective. It is becoming an important determinant of economic performance, fiscal resilience and long-term investment attractiveness. Countries that strengthen their adaptive capacity today are likely to be better positioned to withstand future climate shocks.

France: The Fiscal Cost of Climate Shocks

France illustrates how extreme heat is becoming an economic and fiscal consideration for sovereign investors. The events of summer 2026 demonstrate how a single climate shock can simultaneously affect public health, labour productivity, infrastructure, agriculture and energy systems, requiring both immediate government intervention and growing long-term adaptation investment. As extreme heat becomes more frequent, its cumulative economic costs are becoming an important component of sovereign resilience.

The June–July 2026 heatwave marked one of France's most severe heat events in recent history. Between June 17 and July 2, an estimated 5,764 excess deaths from all causes were recorded, representing approximately 36% more deaths than expected and the highest excess mortality observed during a French heatwave since 2003.⁴ Importantly, excess mortality was recorded across all age groups aged 15 and above, illustrating that the impacts of extreme heat are no longer confined to the most vulnerable populations. As heatwaves increasingly affect working-age populations, they also have broader implications for labour availability, productivity and economic activity.

The timing of the event further amplified its economic consequences. Occurring while schools, workplaces and transport networks remained fully operational, the heatwave-affected sectors were heavily reliant on outdoor labour, including construction, agriculture and logistics, while increasing pressure on public services and critical infrastructure. Severe drought conditions also resulted in France's lowest maize harvest in 50 years, reduced water availability and placed additional pressure on electricity generation, illustrating how a single climate event can simultaneously affect multiple sectors of the economy.⁵

The economic consequences of the summer became even more apparent through France's unprecedented wildfire season. By late July, almost 116,000 hectares had already burned across the country—well above the approximately 70,000 hectares recorded during the entire 2022 wildfire season, previously considered exceptional—even though the fire season was still ongoing.⁶ The Gironde fires alone accounted for around 42,000 hectares, forcing the evacuation of more than 220,000 people and damaging or destroying 277 buildings. Responding to the crisis required the mobilisation of more than 2,500 firefighters, alongside military personnel, law enforcement and aerial resources, illustrating the significant public resources needed to respond to severe climate-related disasters.

More fundamentally, these events illustrate a broader macroeconomic challenge. Climate-related disasters do not simply interrupt economic activity; they destroy productive capital, requiring governments, insurers and businesses to devote increasing financial resources to reconstruction rather than new productive investment. As these expenditures become more recurrent, a growing share of public and private capital may be redirected toward replacing damaged assets and strengthening resilience instead of financing productivity-enhancing investment. Over time, this could influence long-term growth, fiscal priorities and sovereign resilience.

For sovereign investors, the key issue is no longer whether climate-related events generate economic costs, but whether governments have the fiscal capacity and buffers to finance recurring reconstruction and adaptation needs while preserving long-term growth. France demonstrates that sovereign resilience depends as much on rebuilding productive capital after climate shocks as on managing the shocks themselves. The ability to absorb these recurrent costs while maintaining fiscal discipline is likely to become an important determinant of long-term sovereign credit quality.

United Kingdom: The Cost of Adapting Legacy Infrastructure

The United Kingdom illustrates another dimension of sovereign resilience. Rather than highlighting the immediate costs of climate disasters, it demonstrates the growing economic cost of infrastructure designed for a cooler climate. The record-breaking heatwaves of summer 2026 exposed the vulnerability of schools, hospitals, transport networks and public buildings, reinforcing the need for large-scale adaptation investment to preserve essential public services and economic activity.

The June 2026 heatwave brought temperatures close to 39°C in parts of England, prompting an exceptional red heat warning.⁷ Schools across parts of England adjusted timetables or temporarily closed during the heatwave, while rail operators introduced speed restrictions and reduced services to protect aging infrastructure from extreme temperatures. Hospitals also experienced operational disruption as overheating buildings delayed diagnostic procedures and elective operations. Together, these impacts illustrate how aging infrastructure can translate physical climate risks into economic disruption, rising maintenance costs and growing adaptation investment requirements.

The government's response reflects a broader shift in public investment priorities. Following an estimated £800 million of agricultural losses for British farming during the hot and dry conditions of 2025 and more than 1,500 heat-related deaths, the government established its first Climate Change, Resilience and National Security Task Force in 2026.⁸ It also launched a £710 million Renewal and Retrofit Programme for schools and colleges, recognising that preserving the functionality of existing public assets increasingly requires climate adaptation rather than routine maintenance alone.⁹

For sovereign investors, the United Kingdom demonstrates that climate resilience has become an infrastructure investment challenge. Maintaining the functionality of aging public assets will require sustained capital expenditure (capex), with infrastructure quality and long-term public investment playing a central role in preserving economic competitiveness and sovereign resilience.

Germany: The Economics of Smarter Adaptation

Germany illustrates another dimension of sovereign resilience. While France highlights the economic cost of climate shocks and the United Kingdom the investment challenge of aging infrastructure, Germany demonstrates that the effectiveness of adaptation depends not only on how much governments invest, but also on how capital is allocated. The record-breaking heatwave of June 2026 reinforced that rising temperatures are creating new pressures on electricity systems, requiring investments that simultaneously strengthen resilience, energy security and long-term competitiveness.

The June 2026 heatwave brought temperatures close to 42°C in parts of Germany, increasing cooling demand across households, businesses and public buildings.¹⁰ During the heatwave, wholesale electricity prices rose sharply, with German intraday prices climbing from around €86/MWh at midday to approximately €566/MWh during the evening peak on June 25.¹¹ The episode reflected the interaction of stronger electricity demand with tighter supply conditions, including weaker renewable generation, constrained thermal and nuclear output and elevated gas prices. Rather than illustrating a single market driver, it highlighted how extreme heat can amplify electricity market volatility when existing system constraints coincide, reinforcing the importance of greater grid flexibility, storage capacity and demand-side management.

Germany's response increasingly focuses on reducing future system costs rather than simply expanding electricity supply. The country's latest transmission network development plan estimates that €365–392 billions of investments could be required by 2045 to modernise the electricity grid.¹² While these investments primarily support electrification and decarbonisation, more frequent heatwaves further reinforce the need for stronger networks, greater storage capacity and increased system flexibility capable of accommodating higher summer electricity demand.

Public policy is also being used to mobilise private capital towards resilient infrastructure. Through programs such as KfW's Renewable Energies Plus and revised federal building-efficiency schemes, public finance supports investment in thermal renovation, passive cooling, battery storage, heat pumps and more flexible electricity networks. Although these programmes were not designed exclusively as heat adaptation measures, they illustrate how climate adaptation, energy efficiency and decarbonisation are becoming increasingly aligned investment priorities.

The economic distinction is particularly important. Expanding conventional air-conditioning capacity may reduce short-term heat exposure, but it also increases electricity consumption, infrastructure costs and peak-load pressures. By contrast, investments that improve building efficiency, passive cooling and grid flexibility reduce cooling demand itself, lowering both long-term operating costs and future infrastructure investment requirements. In this sense, climate resilience is not simply about investing more—it is about investing more efficiently.

For sovereign investors, Germany demonstrates that climate resilience is an energy investment challenge. The key issue is not simply the scale of adaptation spending, but whether capital is allocated towards investments that reduce future vulnerabilities and long-term system costs. In this context, the effectiveness of adaptation depends as much on how capital is invested as on how much is invested.

Taken together, these case studies illustrate how countries with different exposure profiles and policy responses activate different dimensions of Franklin Templeton Fixed Income's Global ESG Sovereign Model. The table below summarises the principal indicators illustrated by each case study and their investment relevance.

Conclusion

Climate resilience is reshaping the way sovereign risk should be assessed. The experiences of France, the United Kingdom and Germany demonstrate that physical climate risks affect sovereign fundamentals through different transmission channels, from recurrent fiscal reconstruction costs and aging infrastructure to the efficiency of long-term capital allocation. Together, they suggest that the economic consequences of climate change will depend not only on the magnitude of physical shocks, but also on governments' ability to anticipate, absorb and adapt to them.

For fixed income investors, this evolution has important implications. Sovereign credit analysis has traditionally focused on fiscal metrics, debt dynamics, external balances and institutional quality. These factors will remain fundamental, but climate resilience is becoming an increasingly important lens through which they should be interpreted. Countries exposed to similar physical risks may experience different long-term fiscal outcomes depending on the quality of their infrastructure, the flexibility of their public finances and the effectiveness of their adaptation policies. While individual climate events may have only a modest fiscal impact, repeated shocks can gradually erode fiscal buffers, increase investment needs and influence longer-term debt dynamics.

This also changes the way climate adaptation should be viewed. Adaptation should not be viewed solely as a cost or a sustainability objective, but as long-term economic and fiscal resilience. The defining question is not simply how much governments spend, but whether that spending reduces future vulnerabilities, preserves fiscal buffers, protects productive capacity, and limits the accumulation of contingent fiscal liabilities. In this sense, the quality of capital allocation may become as important as the quantity of adaptation investment itself.

Franklin Templeton Fixed Income's Global ESG Sovereign Model provides a framework for analysing this broader concept of sovereign resilience by combining Risk Exposure with Risk Management. As climate risks become more financially material, investors will increasingly need to assess not only which countries face greater physical hazards, but which are better positioned to manage those risks in ways that preserve economic performance, strengthen fiscal resilience and support more sustainable long-term credit profiles.

Building on this analysis, resilience will also be one of the areas of focus in Franklin Templeton Fixed Income’s forthcoming annual Impact Report, expected to be published in September. The report will consider more broadly how different dimensions of resilience can inform the assessment of investment risks and opportunities in an increasingly complex and uncertain economic and financial environment.