Power generation represents the largest and most critical application for thermal coal in Indonesia, underpinning the nation's electricity infrastructure and economic development. According to Market Research Future, the Indonesia Thermal Coal Market for power generation segment dominates the market, with the overall market projected to grow from USD 15,657.39 million in 2025 to USD 28,045.35 million by 2035, at a CAGR of 6.00%. Indonesia's power sector is heavily reliant on coal-fired generation, with coal power capacity reaching 60,705 MW in 2026, making it the fourth largest globally .

PLN-Led Baseload Demand

Perusahaan Listrik Negara (PLN), the state utility, is the primary driver of thermal coal demand for power generation. According to Market Research Future, power plants heavily rely on thermal coal due to its affordability and accessibility, making it a cornerstone in sustaining Indonesia's energy infrastructure. PLN's limited headroom for rapid renewable build-out keeps coal in the core of Indonesia's power dispatch stack. Subsidized electricity tariffs require the utility to prioritize the lowest-cost generation fuel, and sub-bituminous coal remains the most cost-effective option delivered to Java-Bali load centers . PLN is expected to require 154 million metric tons of coal to generate power in 2026 .

Captive Coal Power for Industrial Use

The rapid expansion of nickel processing and electric vehicle battery smelting has created a significant new source of coal demand through captive power plants. Indonesia's 2020 nickel-ore export ban sparked capital inflows exceeding USD 15 billion into nickel processing complexes that require uninterrupted power for electric-furnace operations . Chinese-backed smelters routinely install on-site coal plants sized at 200-350 MW, providing a dedicated market immune to PLN's dispatch priorities . By 2025, a total of 11.2 GW of captive coal-fired TPPs were operating in Indonesia, with captive TPPs not required to disclose power generation data or participate in the country's carbon trading program .

Power Generation Capacity and Growth

Indonesia's coal-fired power capacity has grown substantially and is expected to continue expanding. The country has 60,705 MW of operating coal power, surpassing Japan in 2025 to have the fourth largest capacity globally. Indonesia's 3,140 MW of coal capacity under construction is also the fourth largest globally . Indonesia has adopted a plan for the development of its power industry, which envisages the construction of 26.7 GW of coal-fired thermal power plants (TPPs) by 2031, including 6.5 GW of power plants connected to the national grid and 20.2 GW of captive TPPs .

Domestic Market Obligation (DMO) for Power

The DMO mechanism plays a critical role in ensuring coal supply for domestic power generation. According to Market Research Future, government policies in Indonesia play a pivotal role in shaping the market, with regulations aimed at bolstering coal production and exportation. The Indonesian government imposes a DMO requiring miners to sell at least 25% of their output domestically, with the price for power generation capped at USD 70 per ton . The DMO policy aims to ensure national energy security and stabilize domestic coal prices . However, supplying coal for power generation is currently less attractive for coal miners due to unadjusted capped DMO prices at 70 USD per ton .

Coal Consumption Trends

Domestic coal demand for power generation has risen substantially. Coal demand for the power sector increased from 62 million tonnes in 2013 to 139 million tonnes in 2024, accounting for 56% of domestic demand in 2024 . This growth is largely supported by the 35 GW program announced in 2015, although many projects have faced delays. Domestic coal demand is projected to increase further, driven by higher consumption in the power generation sector and metal processing industries. IEA projected domestic coal demand to increase by 7%, mainly driven by the power sector and smelting industries .

Government Policy and Regulatory Framework

Government policies in Indonesia play a pivotal role in shaping the thermal coal market for power generation. According to Market Research Future, the Indonesian government has implemented various regulations and incentives aimed at bolstering coal production and exportation. These policies include tax breaks and investment incentives for coal mining companies. However, the government has also pledged to halt the development of new grid-connected coal plants as stipulated in Presidential Regulation No. 112 / 2022 . The May 2025 RUPTL document includes several new and revived on-grid coal plants, while significant off-grid captive coal capacity continued to be proposed throughout 2025 .

Grid Stability and Coal's Role

Coal-fired power plants provide essential grid stability services. Grid stability needs further reinforcement of dispatch preference because coal plants provide frequency and voltage services at a lower marginal cost than battery storage. Financially, PLN's budget allocation for coal procurement is predictable, reducing counterparties' credit risk and enabling miners to structure multi-year offtake agreements that lock in volumes . Consequently, the Indonesian coal market benefits from a structural demand floor that persists even as renewable penetration rises incrementally.

Challenges and Environmental Considerations

Despite its critical role, coal-fired power generation faces challenges from environmental regulations and sustainability initiatives. According to Market Research Future, the Indonesia Thermal Coal Market is navigating a complex landscape of environmental regulations and sustainability initiatives. While coal remains a significant energy source, increasing pressure from global environmental standards necessitates a shift towards cleaner practices. The Just Energy Transition Partnership (JETP) agreement has not yet addressed the impact of captive coal plants, and the JETP's first investment plan contains minimal financing for the decommissioning of operating coal plants .

Future Outlook for Power Generation Coal

The future of the Indonesia Thermal Coal Market for power generation presents significant opportunities and challenges. According to Ember's estimates, the peak of coal-fired power generation is unlikely to occur before 2037, with volume exceeding the current level by more than 60%, reaching 494 TWh per year . Demand for power-generating coal will rise by more than 60%, going from 183 million tons in 2024 to 298 million tons in 2037 . Investment in cleaner coal technologies, expansion of grid infrastructure, and development of strategic partnerships with emerging markets represent key growth areas. By 2035, coal-fired power generation is expected to remain the backbone of Indonesia's electricity system.

Conclusion

The Indonesia Thermal Coal Market continues to evolve with power generation representing the largest and most critical application for thermal coal, underpinning the nation's electricity infrastructure and economic development. By 2035, the market is projected to achieve steady growth, with coal-fired power generation remaining essential for meeting Indonesia's growing electricity demands.

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