Southeast Asia’s Energy Transition Is A Bet On Ammonia, Hydrogen and CCS

The shift away from coal in Southeast Asia has only just begun.

If you look at recent energy developments across Southeast Asia, a pattern begins to emerge—one that is easy to miss at first glance, but impossible to ignore once seen.

From Indonesia to Vietnam, multiple projects are being announced: geothermal expansion, hydrogen co-firing, ammonia-powered turbines, LNG infrastructure, and carbon capture initiatives. At face value, these appear to be independent national efforts toward decarbonisation.

But when you examine the companies involved, a clearer story unfolds.

A Regional Pattern, Not Isolated Projects

Across five countries—Indonesia, Malaysia, Singapore, Thailand, and Vietnam—there is a striking level of alignment in the types of technologies being explored:

• Transition from coal to gas and LNG

• Adoption of hydrogen and ammonia as alternative fuels

• Integration of carbon capture and storage (CCS)

• Development of renewable energy alongside transitional systems

This is not a random mix of initiatives. It reflects a shared approach to decarbonisation—one that prioritises energy security, gradual transition, and technological flexibility over abrupt disruption.

The Japan Factor

Here’s where it gets interesting.

When we break down the companies involved in these projects, approximately 60% are Japanese in origin.

This is not a coincidence.

Japanese firms are deeply embedded across nearly every project:

• Engineering giants developing hydrogen and ammonia technologies

• Trading houses structuring cross-border energy investments

• Utility companies participating in power generation transitions

• Energy companies supporting LNG, CCS, and infrastructure development

This level of participation suggests something far more coordinated than typical foreign investment.

Exporting a Transition Model

Japan has long faced a unique energy challenge: limited domestic natural resources combined with high industrial demand. Over time, it has developed a pragmatic approach to decarbonisation—one that balances emissions reduction with reliability and economic stability.

Instead of pushing for an immediate leap to 100% renewables, this model focuses on:

• Using gas as a transitional fuel

• Scaling hydrogen and ammonia as future energy carriers

• Implementing carbon capture to manage existing emissions

• Leveraging advanced engineering to retrofit current infrastructure

What we are now seeing is the export of this model into Southeast Asia.

Why Southeast Asia?

Southeast Asia is, in many ways, the ideal environment for this strategy:

• Rapidly growing energy demand

• Continued reliance on coal and fossil fuels

• Strong need for affordable and reliable power

• Increasing pressure to meet climate commitments

A full, immediate transition to renewables is often not feasible. What these countries need is a bridge—and that is precisely what hydrogen, ammonia, LNG, and CCS provide.

Country Highlights

While the overall pattern is regional, each country plays a slightly different role:

• Malaysia stands out for its breadth, combining ammonia fuel development with carbon capture initiatives—positioning itself as a potential regional hub.

• Singapore is taking a focused, strategic approach, particularly in retrofitting existing infrastructure for ammonia use.

• Indonesia brings scale, with geothermal expansion and coal-to-gas transitions that could significantly impact emissions.

• Thailand is building a hydrogen-ammonia ecosystem, linking production, transport, and usage.

• Vietnam is balancing offshore wind ambitions with LNG infrastructure, creating a hybrid energy pathway.

  
  

A Quiet but Powerful Shift

What makes this trend especially noteworthy is how quietly it is unfolding.

There are no dramatic headlines declaring a sweeping regional alliance. Instead, the shift is happening through:

• Feasibility studies

• Joint ventures

• Pilot projects

• Incremental infrastructure upgrades

Yet taken together, these efforts point to something much bigger:

A coordinated transformation of Southeast Asia’s energy systems—enabled and heavily influenced by Japanese technology, capital, and strategy.

Final Thoughts

For businesses, policymakers, and ESG practitioners, this has several implications:

• The energy transition in Southeast Asia will likely be gradual, not abrupt

• Transitional fuels and technologies will play a longer and more significant role than many expect

• Japan will remain a key strategic partner in the region’s decarbonisation journey

• Opportunities will increasingly lie in integration, not just innovation

In short, the future of energy in Southeast Asia is not being built through isolated breakthroughs—but through coordinated, cross-border collaboration.