Global Infrastructure Outlook 2026–50: Thailand Factsheet

Infrastructure is increasingly becoming critical to Thailand’s long-term economic competitiveness. As the country’s needs for digital technology, lower-carbon energy systems and greater transport networks grow, investment in infrastructure will play a central role in supporting growth, resilience and productivity.

The Global Infrastructure Outlook 2026–50: Thailand Factsheet provides a forward-looking view of how infrastructure investment is expected to evolve over the next 24 years. The factsheet draws on analysis from PwC and Oxford Economics, and highlights key investment sectors, emerging opportunities and the funding challenges that stakeholders will need to address.

Digital infrastructure investment is accelerating

Investment in digital infrastructure is projected to grow at an average annual rate of 7.8%, driven largely by demand for data centres. In the first quarter of 2026, the digital sector accounted for 86% of all BOI investment promotion applications, reflecting growing demand for AI capabilities, cloud services and digital transformation across industries.

Powering the clean energy transition

Investment in energy infrastructure is projected to grow at an average annual rate of 2.9%, supported by rising investment in renewable energy, grid modernisation and energy storage. The transition is being driven by Thailand’s target to reduce greenhouse gas emissions by 47% by 2035 and increase the share of electricity generated from clean energy sources to 60%.

Building connectivity for future growth

Transport is expected to remain Thailand’s largest infrastructure investment sector, with investment projected to grow at an average annual rate of 2.6%. Major projects, including high-speed rail, motorways, airports and ports, are expected to strengthen national connectivity, while annual transport infrastructure investment is forecast to rise from approximately THB291bn in 2026 to THB322bn by 2030.

Ageing population drives demand for social infrastructure

The demand for investment in social infrastructure is set to increase due to the pressures of becoming a fully aged society. By 2025, there will be 14.5 million elderly people, making up 22% of the population, with a working-age population support ratio of only 4.3 per elderly person. This compares with an average of ten in Cambodia, Laos, Myanmar and Vietnam. Meanwhile, the National Health Security Fund budget increased by 8.4% in 2025 and has grown at an average rate of 4.9% per year over the past five years, exceeding GDP growth. This reflects the necessity for long-term care service centres and housing for the elderly, especially low-income groups.

This factsheet brings together data-driven forecasts, sector analysis and market insights to help decision-makers understand Thailand’s long-term infrastructure outlook. Readers will gain a clearer view of future investment, growth sectors, and the trends shaping infrastructure development across digital, energy and transport networks.

About the research

The Global Infrastructure Outlook 2025–50 draws on forecasts developed by Oxford Economics to assess infrastructure investment needs across 45 countries and territories, including Thailand. The analysis combines historical spending data, economic projections and sector-level insights to provide a long-term view of infrastructure development through 2050.

The Thailand Factsheet translates global infrastructure trends into a local context, exploring the market dynamics shaping Thailand’s infrastructure future. It highlights where infrastructure demand is expected to grow and provides insights to support strategic planning, investment decisions, and policy development through 2050.