Designing Credible Coal Transition Pathways in Southeast Asia
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Designing Credible Coal Transition Pathways in Southeast Asia

This flagship article draws on the discussion from “Accelerating Coal Phase-Out: Leveraging U.S.–Southeast Asia Insights to Advance Credible Transition Pathways,” a roundtable bringing together policymakers, researchers, and industry leaders. The conversation explored how financial structures, policy design, and power system planning can support practical and credible coal transition strategies across Southeast Asia.

Accelerating Coal Phase-Out: Leveraging U.S.–Southeast Asia Insights to Advance Credible Transition Pathways
FROM THE EVENTAccelerating Coal Phase-Out: Leveraging U.S.–Southeast Asia Insights to Advance Credible Transition Pathways
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Southeast Asia’s coal transition is entering a decisive phase. Electricity demand across the region continues to expand rapidly, driven by industrialization, urbanization, and the emergence of energy-intensive sectors such as digital infrastructure and advanced manufacturing. Yet coal remains a central pillar of the region’s power systems. While governments have articulated long-term decarbonization commitments, translating those ambitions into credible and financeable coal retirement pathways remains a complex challenge.

The difficulty lies not in identifying alternatives, but in managing existing system constraints. Many coal plants in Southeast Asia were built within the past two decades and remain tied to long-term power purchase agreements (PPAs)—contracts guaranteeing electricity offtake and revenue over decades. These arrangements complicate early retirement timelines and create financial risks for utilities and investors. Policymakers must therefore balance three competing priorities: maintaining electricity affordability, preserving grid reliability, and accelerating emissions reductions.

Coal still supplies roughly one-third of Southeast Asia’s electricity generation (International Energy Agency, 2024). This structural dependence means that coal phase-out strategies must be carefully sequenced. During the roundtable discussion, experts emphasized that credible transition pathways will depend on financial innovation, system-level planning, and adaptive policy frameworks tailored to the region’s institutional realities.

1. Financing Coal Transition Requires Layered Capital Structures

One of the most immediate barriers to coal retirement in Southeast Asia is financial complexity. Many plants remain relatively new and are embedded in long-term contractual arrangements that guarantee revenue streams for decades.

M.K. Balaji (Member of the Advisory Board, Energy Regulators Regional Association) stressed that coal transition financing must reflect the diversity of Southeast Asia’s energy markets.

“ASEAN is actually a mix of countries at very different stages of maturity,” Balaji noted. “There is not one formula that fits all, given the risk profiles of each country and each project.”

Ownership structures further complicate financing. Coal plants may be privately owned, operated by state utilities, or structured through hybrid partnerships. Each configuration introduces different financial and regulatory risks.

Early experiences in the region highlight these challenges. Balaji pointed to a managed coal retirement initiative in the Philippines that has progressed relatively well, while a similar effort in Indonesia faced structural obstacles—illustrating how transaction design and stakeholder alignment can determine outcomes.

Emerging financing approaches typically combine several layers:

  • Blended finance — combining concessional capital with private investment

  • Transition credits — emerging carbon-linked instruments supporting early plant retirement

  • Grant-funded feasibility studies that help projects reach bankable stages

Blended finance refers to financial structures that combine public or philanthropic capital with private investment to reduce risk and attract larger funding pools.

Balaji cautioned against over-engineering early deals. “We should probably start simple with low expectations,” he said, arguing that successful early transactions can gradually build investor confidence.

Implication: Coal transition finance will likely evolve through incremental deal structures rather than a single universal mechanism.

2. Power System Planning Must Shift from Assets to Portfolios

Falling renewable energy costs have fundamentally changed the economics of electricity generation. However, integrating renewables at scale requires a shift in how power systems are planned.

Robbie Orvis (Senior Director, Modeling & Analysis, Energy Innovation) emphasized that reliability should be evaluated at the system level rather than at the level of individual power plants.

“Grid planners often look at the reliability of a single asset,” Orvis explained. “But what you really want is the reliability of the system as a whole.”

Modern power systems increasingly rely on portfolios of resources—including solar, wind, storage, nuclear power, and flexible demand—to collectively provide reliability.

This approach can deliver several advantages:

  • Reduced exposure to volatile fuel prices

  • Greater energy security for fuel-importing countries

  • Lower system costs through optimized resource mixes

Another key distinction involves sunk costs versus going-forward costs. Sunk costs reflect past investments, while going-forward costs represent the future cost of operating existing assets compared with building alternatives.

Policymakers often delay coal retirement because of outstanding debt. Yet Orvis stressed that investment decisions should focus on future system economics.

“The key question,” he noted, “is whether continuing to operate that plant is the lowest-cost option for the system going forward.”

Implication: Transition planning should focus on optimizing resource portfolios rather than preserving individual legacy plants.

3. Electrification Can Either Accelerate or Delay Decarbonization

Electrification is widely seen as a core climate strategy, but its environmental impact depends on the carbon intensity of the electricity system.

Stephen Holland (Professor, University of North Carolina Greensboro; Research Associate, National Bureau of Economic Research) highlighted research showing that early electric vehicle adoption in coal-heavy regions of the United States sometimes produced unexpected outcomes.

“Running your electric car was effectively running on coal instead of gasoline,” Holland explained. “And in some parts of the country, that was actually dirtier.”

As the U.S. grid decarbonized, these dynamics reversed. However, the experience revealed a broader lesson: the timing and structure of electrification policies matter.

Electrification interacts with the grid through marginal emissions—the emissions produced by the next unit of electricity generated.

Depending on when electricity demand occurs:

  • Daytime EV charging can incentivize solar deployment

  • Nighttime charging may rely more heavily on fossil generation

  • New demand can either crowd in renewables or extend fossil capacity

Holland summarized the key takeaway succinctly: “Don’t let electrification rescue coal.”

Implication: Electrification policies must be aligned with power-sector decarbonization to avoid prolonging fossil generation.

4. Credible Transitions Require Adaptive Policy Frameworks

Energy transitions unfold over decades and are shaped by technological uncertainty, commodity price fluctuations, and evolving investment conditions. Policies based on rigid forecasts often struggle to remain effective.

Dr. Justin Johnson Kakeu (Interim Chair and Associate Professor of Economics, University of Prince Edward Island) argued that transition strategies must be designed for flexibility.

“Dynamic flexibility matters more than precision,” Kakeu said. “Policies that can adjust over time are better at managing uncertainty.”

He outlined several principles for credible policy design:

  • Adaptive frameworks that allow incentives to evolve

  • Scenario-based planning that prepares for multiple possible futures

  • Risk-sharing mechanisms between governments, investors, and utilities

The scale of existing coal investment further complicates the transition. Southeast Asia’s coal power fleet represents hundreds of billions of dollars in infrastructure and planned projects (Global Coal Exit List, 2024).

“The transition away from coal changes the structure of key capital stock,” Kakeu noted, underscoring the importance of policies that manage long-term financial risk.

Implication: Coal transition strategies must combine policy flexibility, financial restructuring, and risk-sharing mechanisms to remain credible.

The Defining Capability: Aligning Finance, Policy, and System Design

The coal transition challenge in Southeast Asia is not primarily technological. Renewable generation, storage technologies, and emerging low-carbon solutions are already available. The central challenge lies in aligning finance, policy, and system planning.

Successful transitions will likely share several defining characteristics:

  • Innovative financial mechanisms addressing stranded asset risks

  • System-level planning frameworks that optimize resource portfolios

  • Flexible policy structures that adapt to evolving market conditions

  • Strategic sequencing of electrification and generation shifts

  • Strong community transition programs supporting workers and local economies

As electricity demand continues to expand across Southeast Asia—driven by industrial growth, electrification, and digital infrastructure—the urgency of credible coal transition pathways will intensify.

The defining task for policymakers is not simply reducing coal dependence, but aligning policy, finance, and system design to make the transition economically viable and politically durable.

Sources

International Energy Agency. Southeast Asia Energy Outlook 2024.

Urgewald. Global Coal Exit List Database (GCEL), 2024.