Thailand infrastructure investment projected to hit THB21 trillion by 2050

Closing the infrastructure gap will be critical to long-term competitiveness, PwC says

• Annual infrastructure spending in Thailand is expected to rise from USD18bn in 2024 (approximately THB589bn)¹ to USD28 billion (approximately THB900bn) by 2050, bringing cumulative investment to USD641bn, or around THB21tn. 
• Transport will remain the largest investment segment through 2050, accounting for 44% of total investment, while power infrastructure is expected to be the fastest-growing sector. 
• Investment in data centres will also play an increasingly important role, with cumulative investment estimated at USD26tn (around THB850bn).

BANGKOK, 8 June 2026 – PwC Thailand reveals that the world is entering a new phase of accelerated infrastructure investment, driven by urbanisation, the transition to clean energy and the rapid expansion of digital technologies.

Thailand remains well-positioned within this global trend, with cumulative infrastructure investment expected to reach THB21tn by 2050. Spending is projected to increase from USD18bn in 2024 to USD28bn in 2050—a rise of around 56%.

Analysis from the PwC Global Infrastructure Outlook 2050 shows that infrastructure investment globally is set to grow significantly, with annual spending rising from USD4.4tn in 2024 to USD6.9tn by 2050, resulting in cumulative investment of USD151.1tn. This reflects how countries are accelerating investment to support urbanisation, electrification, and the growth of AI and digital technologies.

In Thailand, transport will continue to account for the largest share of infrastructure investment, representing around 44% of the total. At the same time, power infrastructure is expected to be the fastest-growing sector, while digital infrastructure—particularly data centres—is gaining momentum as demand for connectivity and AI-enabled services increases.

Nath added that over the next five to ten years, infrastructure investment opportunities in Thailand are expected to concentrate in three key areas:

1. Digital infrastructure—particularly data centres in the Eastern Economic Corridor (ECC). While Thailand may not be among the world’s largest infrastructure investment markets, it stands out in Asia as an active market with notable investment potential. 
2. Transport infrastructure – driven by major public sector projects, including the Bangkok–Nakhon Ratchasima–Nong Khai high‑speed rail, the three‑airport rail link, the U‑Tapao Airport and Eastern Aviation City development, rail mass transit expansion in Bangkok and surrounding areas, and new motorway networks.
3. Healthcare infrastructure, in response to rising demand and an ageing society. Greater public-private collaboration, or PPPs, is expected to emerge to improve service quality and strengthen long-term capacity.

However, the next challenge is not just about increasing investment. It is about integrating and prioritising infrastructure development in line with the direction of the new economy to strengthen the country’s competitiveness over the long term.

“Thailand has strong infrastructure investment potential across multiple sectors, particularly transport, digital and healthcare. Policymakers, investors and businesses will need to proactively assess how these trends will shape the economy over the next five to ten years and respond accordingly. Organisations that move early, align their strategies with infrastructure developments and embed these trends into long-term planning will be best positioned to capture emerging opportunities,” Nath said.

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^{[1] All figures are based on an exchange rate of USD1 = THB32.7 as of 28 May 2026.}

Notes to Editors

About PwC’s Global Infrastructure Outlook 2050

The Global Infrastructure Outlook 2050 is based on a database of infrastructure spending forecasts generated by Oxford Economics. All figures are in real prices (e.g., inflation has been adjusted for). The outlook covers nine sectors and 20 infrastructure subsectors in 45 countries and territories. Most data sources, visited during 2025, provided figures up to either 2023 or 2024. The main sources of spending data used were the OECD, Eurostat and national statistical agencies. Data that was not available from official public sources was estimated using a variety of techniques. This involved the usage of additional data sources (International Energy Agency, Milex), estimating sectoral infrastructure spend from sectoral capital expenditure or using available metrics from peer countries to estimate spend. The database provides a structural economic framework that considers both supply and demand factors impacting sectoral growth.

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