Indonesia occupies two positions in the global coal economy. It is one of the world’s leading coal producers and exporters, supplying major Asian markets with large volumes of thermal coal. At the same time, coal remains the foundation of its domestic electricity system and an important fuel for expanding industries such as mineral processing.
This combination has made coal more than an export commodity. It supports government revenue, regional employment, power generation and industrial development. It also creates a difficult transition problem. Indonesia has substantial renewable energy resources and a long-term net-zero target, but coal production and domestic consumption remain high.
The future of Indonesian coal will therefore depend on several connected questions. Export demand may weaken as major buyers expand cleaner energy, while domestic consumption could remain strong because of existing power plants, industrial growth and the continued availability of relatively low-cost local coal.
Kalimantan and Sumatra Anchor Indonesian Coal Production
Indonesia’s coal industry is concentrated mainly in Kalimantan and Sumatra. East Kalimantan and South Kalimantan contain many of the country’s largest mining operations, supported by river transport systems, coastal terminals and established export routes. South Sumatra also holds extensive coal resources, although transport constraints have historically limited the development of some inland deposits.
Much of Indonesia’s production consists of thermal coal used in power generation. Indonesian coal often has a lower energy content than premium grades from Australia or Russia, but it can remain competitive because of relatively low production costs and short shipping distances to Asian customers.
Indonesia produced approximately 836 million tonnes of coal in 2024, according to the Ministry of Energy and Mineral Resources. This represented another increase following production of about 775 million tonnes in 2023. The scale of output confirms Indonesia’s position as a major supplier to the international seaborne coal market.
Production is divided among large national companies, state-owned enterprises and numerous regional operators. Major participants include PT Bukit Asam, Adaro Energy Indonesia, Bumi Resources, Bayan Resources and Indika Energy. Their activities extend beyond mining into transport, ports, power generation and, in some cases, downstream processing.
The industry’s geography strongly affects its operating model. Mines in Kalimantan frequently move coal by truck to river-loading facilities before transferring it to larger vessels offshore. This system allows mines to reach export markets without relying entirely on long-distance railways. However, it can also expose operations to weather disruption, river conditions and logistical bottlenecks.
Exports Connect Indonesia to Asia’s Largest Coal Markets
Coal exports remain central to Indonesia’s trade position. China and India are usually among the largest buyers, while other important destinations include countries across Southeast Asia and East Asia. Indonesian supply is particularly suitable for power companies seeking competitively priced thermal coal that can be delivered over relatively short maritime routes.
The export business gives Indonesia considerable influence in the regional coal market. Changes in Indonesian production, export rules or weather conditions can affect prices and supply availability across Asia.
Coal exports also expose producers to developments outside Indonesia. Demand can change according to Chinese power consumption, Indian electricity growth, international coal prices, freight rates and energy policies in importing countries. Faster renewable energy deployment or stronger restrictions on coal-fired generation could gradually reduce demand in some established markets.
Even so, coal consumption is not declining at the same speed across Asia. The International Energy Agency expected coal use in ASEAN to continue increasing in 2025, led by Indonesia and Vietnam, as electricity demand and industrial loads expanded. By contrast, advanced Asia-Pacific economies such as Japan were expected to reduce coal consumption as renewables, nuclear power and liquefied natural gas gained market share.
Indonesia’s position is therefore supported by a regional market that remains divided. Some economies are accelerating coal retirement, while others continue to build electricity and industrial systems in which coal has an important role.
Domestic Supply Rules Keep Coal Flowing to Indonesian Users
The government does not allow the export market to determine the entire direction of coal production. Indonesia applies a domestic market obligation, commonly known as the DMO, which requires producers to supply part of their output to domestic consumers.
The policy is designed mainly to protect coal supplies for electricity generation and other priority industries. It reduces the risk that producers will direct all available coal toward higher-priced export markets when international prices rise.
Domestic coal use reached about 254 million tonnes in 2025, equivalent to approximately 32% of total production, while around 514 million tonnes were allocated to exports, according to the Ministry of Energy and Mineral Resources.
The DMO is especially important to PLN, the state-owned electricity company, and to independent power producers serving the national grid. The government has also used regulated pricing arrangements for coal supplied to parts of the domestic market. These measures support electricity affordability, but they can create disagreement between producers, utilities and policymakers over prices, quotas and commercial returns.
Coal’s domestic importance is visible in the electricity mix. It supplied approximately 69% of Indonesia’s electricity generation in 2023, making it by far the country’s largest power source.
This dependence reflects years of investment in large coal-fired power stations, including projects developed under government programs intended to expand generation capacity. Many plants are relatively young, which makes rapid retirement financially and operationally difficult.
Coal Is Expanding Beyond the National Power Grid
Indonesia’s coal demand is increasingly connected to industrial development as well as public electricity supply. The growth of nickel processing, metal refining and other energy-intensive industries has created additional demand for reliable power.
Some industrial parks use captive coal-fired power plants that operate separately from PLN’s main grid. These facilities have supported rapid growth in mineral processing, especially in regions where industrial demand developed faster than grid infrastructure.
This creates a major complication for Indonesia’s energy transition. Reducing coal use on the public grid would not automatically eliminate coal consumption associated with mining, smelting and industrial production. Industrial decarbonization will require alternative power supplies, stronger transmission networks and new investment in renewable generation.
Coal producers have also explored downstream uses intended to increase the value of domestic resources. Proposed activities have included coal gasification, coal-to-chemicals projects and the production of dimethyl ether as a possible substitute for imported liquefied petroleum gas.
The commercial case for these projects remains uncertain. Large capital requirements, technology costs and exposure to changing energy prices can make downstream coal projects difficult to finance without state support. Their development will depend on whether the government views import substitution and industrial policy as sufficient reasons to accept the financial and environmental costs.
Energy Transition Plans Must Address a Young Coal Fleet
Indonesia has committed to reaching net-zero emissions by 2060 or earlier, while also seeking to increase renewable energy use. The country has strong geothermal, hydro, solar and wind resources, but deployment has not yet displaced coal on a large scale.
The challenge is not simply a shortage of renewable potential. It includes power-purchase arrangements, grid limitations, investment conditions, the financial position of PLN and the long operating lives of coal plants. The IEA has stated that Indonesia has a viable route toward its net-zero objective, although major policy reforms and international support would be necessary.
International initiatives have attempted to support earlier coal retirement and clean-energy investment. However, closing coal plants before the end of their financial lives requires agreements among plant owners, lenders, government agencies and electricity buyers. Captive industrial plants create an additional layer because they may not fall within the same retirement mechanisms as plants supplying the public grid.
Indonesia has also promoted biomass co-firing at some coal stations. This can reduce the volume of coal used for each unit of electricity, but it does not remove the plants’ continued dependence on combustion-based generation. The scale and sustainability of biomass supply are also important considerations.
Indonesian Coal Faces Gradual Change Rather Than Immediate Decline
Indonesia’s coal industry is unlikely to disappear quickly. Export infrastructure is extensive, domestic power plants require large fuel volumes, and industrial demand continues to support consumption. Coal also remains economically important to mining regions and government finances.
The direction of the sector may nevertheless change. Export markets will become more competitive as some buyers reduce coal-fired generation. Domestic power policy will face increasing pressure to control emissions, attract clean-energy investment and prevent coal assets from becoming expensive long-term liabilities.
Indonesia’s central coal question is therefore not whether the industry remains important today. It is whether the country can reduce structural dependence on coal while protecting electricity reliability, industrial growth and the economies of major producing regions. The pace of renewable construction, grid investment and coal-plant retirement will determine how quickly that balance changes.
