Thai Listed Companies Face Nearly $11 Billion in Annual Climate‑Risk Costs by 2050, S&P Global Warns

Thailand's largest listed companies are expected to incur nearly USD 11 billion in annual climate-related physical risk costs by the 2050s if no adaptation measures are implemented, according to a new S&P Global Sustainable analysis. The study examines 84 companies accounting for 97% of the SET100 market capitalization and utilizes high-resolution climate-risk modeling to gauge future financial exposure.

The projected yearly impact jumps from USD 6.9 billion in the 2020s to USD 10.9 billion in the 2050s, reflecting the mounting costs of extreme weather and long-term climate stressors.

S&P Global highlights extreme heat, water stress, drought, and pluvial flooding as the most significant physical hazards for Thai corporations. These risks are projected to intensify under the medium-range climate scenario (SSP2-4.5), affecting operations, supply chains, and asset values across various sectors. Southern Thailand emerges as a critical hotspot, with 17% of single-family homes potentially impacted by a 100-year fluvial flood by the 2050s.

The region already faces frequent fluvial flooding, as evidenced by the devastating November 2025 disaster that affected 2.8 million people across nine provinces, underscoring the scale of disruption businesses may encounter.

Despite the escalating risks, 65% of SET100 companies have already formulated climate-adaptation plans, according to S&P Global's Corporate Sustainability Assessment. While these measures could help alleviate future losses, the report emphasizes the need for accelerated adaptation to keep pace with climate impacts. The findings underscore the growing imperative for Thai corporations to integrate climate resilience into long-term planning, capital allocation, and infrastructure investment.

Leveraging the Climanomics platform, a bottom-up methodology that quantifies financial impacts from climate hazards, the analysis underscores the urgent need for companies to adapt to the evolving climate risk landscape.