What does it take to build sustainable, inclusive infrastructure in one of the world’s fastest-growing regions? Through Partnerships for Infrastructure (P4I), Southeast Asian governments are rewriting the playbook—advancing renewables, setting national road standards, and embedding equity at the heart of public transport.

Southeast Asia faces a US$3 trillion infrastructure investment gap as it races toward becoming the world’s fourth-largest economy by 2040. Outdated policies, weak procurement frameworks, and limited technical capacity threaten to stall progress. Without reforms, citizens risk living with unstable power, congested transport, and missed economic opportunities.

P4I, funded by Australia’s development program and active since 2021, helps governments bridge this gap. Working with eight Southeast Asian countries and ASEAN, it delivers region-wide advisory, policy reform, and capacity building—facilitating pipelines worth over A$50 billion each year.

Through targeted support across infrastructure, energy, and transport, P4I has helped partner governments turn ambitious plans into tangible progress. These are some of the key successes delivered with P4I support:

• Setting Standards for Sustainable Infrastructure: P4I has supported governments to embed consistent, nationally accepted standards for roads and bridges, ensuring long-term safety and quality. In Cambodia, these standards are now being applied across a US$1.6 billion project pipeline.
• Strengthening Energy Planning and Investment: By improving how utilities and ministries plan, P4I has enabled governments to expand renewables and diversify energy supply. In Sarawak, Malaysia, the state utility’s roadmap now supports a fourfold increase in renewable generation.
• Greening Transport Systems: From bus fleets to freight corridors, P4I has helped countries integrate electric mobility into transport strategies while addressing equity and access. In Thailand, this guidance supported the procurement of 1,500 electric buses with gender and access KPIs built in.
• Piloting Clean Technologies: P4I has introduced new models and exchanges to accelerate uptake of emerging clean energy solutions. In Indonesia, this led to a 12-month pilot of green hydrogen generation, adapted from an Australian exchange model.
• Reforming Legal and Regulatory Frameworks: Technical and policy support has helped unlock large-scale renewable investments. In Vietnam, reforms under Power Plan VIII will enable 44 GW of new capacity by 2030.
• Building Readiness for Private Investment: Governments are better prepared to engage private finance through improved PPP laws and institutional frameworks. In the Philippines, this has laid the groundwork for multibillion-dollar PPP projects.
• Expanding Access to Reliable Electricity: P4I has helped extend energy services to remote and underserved communities through innovative delivery models. In Timor-Leste, alignment with Australian best practice brought 24-hour power to rural areas via microgrids.
• Designing Smarter Transport Strategies: P4I’s support for integrated, multimodal transport planning has unlocked new regional investments. In Laos, this approach underpinned a national strategy that mobilised US$12.5 million in new projects.

Lasting Impact

By combining top-down reforms with practical investment support, P4I helps governments overcome technical hurdles and mobilise quality financing for sustainable growth. Its holistic model—integrating gender equity, climate resilience, and financial governance—builds enduring public-sector capacity rather than one-off projects.

The result? More citizens gaining access to reliable power, safe and inclusive transport, and resilient infrastructure systems that will serve Southeast Asia for decades to come.