Thailand’s largest listed companies are on track to absorb almost USD 11 billion per year in climate‑related physical risk costs by the 2050s if no adaptation measures are taken, according to new analysis from S&P Global Sustainable1. The study evaluates 84 companies representing 97% of the SET100 market capitalization and applies high‑resolution climate‑risk modelling to quantify future financial exposure.
The projected annual impact—USD 10.9 billion—marks a steep rise from USD 6.9 billion in the 2030s and USD 5.0 billion in the 2020s, underscoring the accelerating cost of extreme weather and long‑term climate stressors.
Extreme Heat and Water Stress Lead Corporate Risk Exposure
S&P Global identifies extreme heat, water stress, drought and pluvial flooding as the most material physical hazards for Thai corporates. These risks are expected to intensify under the medium‑range climate scenario (SSP2‑4.5), affecting operations, supply chains and asset values across multiple sectors.
Southern Thailand: High Flood Exposure for Households and Businesses
The report highlights southern Thailand as a critical hotspot: 17% of single‑family homes in the region could be affected by a 100‑year fluvial flood event by the 2050s. Fluvial flooding already occurs almost annually, and the November 2025 disaster—impacting 2.8 million people across nine provinces—illustrates the scale of disruption businesses may face.
A dedicated case study in the report uses high‑resolution flood‑depth data to assess how varying flood levels could affect residential properties and, by extension, local economic resilience.
Most SET100 Companies Have Adaptation Plans—But Gaps Remain
Despite the rising risks, 65% of SET100 companies have already developed climate‑adaptation plans, according to S&P Global’s Corporate Sustainability Assessment. These measures could help mitigate future losses, though the report stresses that adaptation must accelerate to match the pace of climate impacts.
A Growing Imperative for Thai Corporate Strategy
With climate‑related physical risks set to escalate sharply over the next three decades, S&P Global’s findings reinforce the need for Thai corporates to integrate climate resilience into long‑term planning, capital allocation and infrastructure investment. The analysis leverages the Climanomics platform, a bottom‑up methodology designed to quantify financial impacts from climate hazards.
