Southeast Asia needs over $7 trillion for infrastructure through 2040

Southeast Asia will require $7.1 trillion in infrastructure investment by 2040 to sustain economic growth, strengthen energy security, and build connected and resilient economies, according to a new report released by the Asian Development Bank (ADB) on November 10, 2026, according to a press release. The findings were announced from ADB headquarters in Manila, Philippines. The report, titled “The $7 Trillion Challenge: Building Tomorrow’s ASEAN,” outlines the scale of investment needed across power, transport, digital, and health sectors. It estimates annual infrastructure demand at $476 billion between 2026 and 2040, equivalent to 8.7% of regional GDP. At current levels, government investment covers only 45% of the required amount, leaving an annual funding gap of $264 billion.

The report covers all 11 ASEAN member states: Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, the Philippines, Singapore, Thailand, Timor-Leste, and Vietnam. The estimates reflect rising demand for modern infrastructure driven by regional economic expansion, urbanization, digital connectivity, and the growth of service-based economies. As ASEAN’s main bank, ADB supports the region through financing, project preparation, knowledge sharing, and the promotion of regional coordination. The institution works to translate regional priorities into investable projects. ADB was founded in 1966 and has 69 members, 50 of them from the region.

Power and transport account for 85% of the region’s infrastructure needs, requiring $3.6 trillion and $2.5 trillion respectively. The power sector requires expanded investment in generation, transmission, and storage, including stronger cross-border electricity interconnections under the ASEAN Power Grid, to enhance energy security, scale clean energy use, and reduce vulnerability to global supply disruptions. ADB’s Pan-Asia Power Grid Initiative, launched in May, builds on the ASEAN Power Grid to expand cross-border electricity trade across Asia and the Pacific. Within transport, roads remain the largest segment, with around $2 trillion in investment needs. Rail and airports are among the fastest-growing areas of demand.

Digital infrastructure requires an additional $584 billion, covering broadband networks and data centers to boost connectivity, productivity, and competitiveness, and to advance the ASEAN Digital Economy Framework Agreement. ADB’s Asia-Pacific Digital Highway, launched in May, will finance fiber-optic networks, submarine cables, internet exchange points, and regional data centers through 2035. Health infrastructure requires another $227 billion through 2040, including roughly 49,000 new health facilities, most of them primary healthcare centers. “Southeast Asia’s growth depends on what it builds next,“ said ADB President Masato Kanda, adding that factories need reliable power, businesses need faster and safer access to markets, and investments must deliver long-term returns. He said ADB will help governments advance projects that investors can trust and people can rely on.

The report identifies a shortage of well-prepared projects as the main barrier to attracting the private investment needed to meet ASEAN’s infrastructure demand. With pressure on government budgets rising, it calls for stronger project preparation, predictable regulatory frameworks, and more transparent procurement procedures. Integrated transport networks and stronger cross-border connectivity are expected to reduce logistics costs and improve Southeast Asia’s global competitiveness. Investments in health infrastructure are expected to strengthen health systems and improve preparedness for future public health emergencies. ADB will continue to support the region in turning priorities into investable projects.