Mongolia’s coal industry serves two very different markets. High-quality coking coal from the South Gobi is sold to Chinese steelmakers, while lower-grade thermal coal and lignite support electricity generation and district heating at home. The first side of the industry brings export revenue into the country. The second keeps cities functioning through long winters.
This combination gives coal an unusually large role in Mongolia. It is not only a mining commodity. It is also part of the country’s trade balance, transport policy, public finances, electricity supply, and heating system. Mongolia exported a record 83.9 million tonnes of coal in 2025, following another very strong year in 2024. At the same time, coal supplied more than 70% of the country’s primary energy in 2024 and remained the leading source of domestic electricity.
Tavan Tolgoi Has Moved Mongolia Into the Top Tier of Coking Coal Exporters
The centre of Mongolia’s export industry is the South Gobi, where the Tavan Tolgoi coal deposit supports several major mining operations. State-owned Erdenes Tavan Tolgoi is the largest national producer, while other companies operate within the wider deposit and nearby coalfields. Nariin Sukhait, farther west in the Gobi region, is another important source of export coal.
Much of this production is metallurgical coal, including coking coal used in blast-furnace steelmaking. That gives Mongolia a different market position from countries that mainly export thermal coal for power generation. The International Energy Agency identified Mongolia as the world’s second-largest exporter of metallurgical coal after Australia in 2024.
Mongolia’s advantage is geographic. Its mines are close to northern China, the world’s largest steel-producing market. Coal can move across a land border rather than travelling by ship from Australia, Canada, the United States, or Mozambique. Shorter transport distances can make Mongolian coal competitive when border crossings and rail links operate efficiently.
The same geography also creates a major concentration risk. Nearly all Mongolian coal exports go to China. Demand therefore depends heavily on Chinese steel output, industrial policy, domestic mine production, import rules, and border management. Mongolia has gained a strong position in China’s supply chain, but it has few realistic alternative buyers because it is landlocked between China and Russia.
New Rail Links Are Changing the Economics of Coal Exports
For many years, trucks carried large volumes of coal from the South Gobi to border crossings. This system allowed production to grow, but it also created long queues, high transport costs, road damage, dust, and delays during periods of border congestion.
The 233.6-kilometre Tavan Tolgoi–Gashuunsukhait railway was built to address that bottleneck. It connects the Tavan Tolgoi mining area with Mongolia’s main coal-export crossing and has a designed freight capacity of roughly 30 million to 50 million tonnes per year. However, the absence of a direct rail connection across the Chinese border initially limited the full benefit of the line because cargo still required transfer at the frontier.
Construction of the Gashuunsukhait–Gantsmod cross-border railway began in June 2025. The dual-gauge project is designed to handle up to 40 million tonnes of cargo annually and provide a direct connection with the Chinese rail network. Mongolia is also developing or planning links at Shiveekhuren–Sekhee, Khangi–Mandal, and other border points.
These projects could lower transport costs, shorten delivery times, reduce dependence on trucking, and allow producers to sign longer-term sales agreements. They may also increase the importance of washed and processed coal because reliable rail transport makes it easier to deliver products with consistent quality.
Rail development does not remove Mongolia’s dependence on China. It strengthens the same trade route. The commercial value of the new network will still depend on Chinese demand and on whether border capacity, customs systems, and mine output expand together.
Domestic Lignite Keeps Mongolia’s Power and Heating Systems Running
Export coal receives much of the commercial attention, but lower-grade domestic coal remains essential to everyday energy supply. Mines such as Baganuur, Shivee-Ovoo, and Sharyn Gol provide lignite and thermal coal to combined heat and power plants.
These plants generate electricity while also producing hot water and steam for district-heating networks. That second function is critical in Ulaanbaatar and other urban areas, where winter temperatures place heavy demand on heating systems. Replacing coal therefore involves more than building new electricity capacity. Mongolia would also need cleaner sources of dependable winter heat.
Most of the country’s large thermal plants were developed decades ago. Ageing equipment, limited reserve capacity, rising urban demand, and restricted grid flexibility have contributed to electricity shortages and continued imports from Russia and China. Coal remains locally available and relatively inexpensive, but the existing system is increasingly difficult to operate efficiently.
Household heating adds another dimension. Many residents of Ulaanbaatar’s ger districts live outside the central heating network and rely on solid fuels. The government has promoted processed briquettes instead of raw coal, but winter combustion remains a major source of fine-particle pollution. Coal dependence is therefore connected directly to both energy security and urban air quality.
Coal Revenue Brings Growth but Also Economic Exposure
Coal exports have become one of Mongolia’s largest sources of foreign currency. Mining products account for most of the country’s goods exports, and coal revenue influences government income, infrastructure spending, exchange-rate conditions, and national economic growth.
This creates a strong incentive to increase production when prices and Chinese demand are favourable. The government has supported railway construction, coal-washing capacity, border expansion, and long-term supply agreements. A first 10-million-tonne annual section of the Tavan Tolgoi coal-processing plant entered operation in 2024, with the wider project designed for substantially greater capacity.
Processing can improve product quality and allow Mongolia to capture more value before export. The country has also discussed coke, coal-chemical, and steel projects that would move beyond the sale of raw material. Such plans face high capital costs, water constraints in the Gobi, power requirements, and the challenge of competing with established industrial producers in China.
Large coal revenues also make the economy more sensitive to price declines and trade disruptions. A reduction in Chinese imports can affect freight activity, tax receipts, the national budget, and the tugrik. Diversification is therefore an economic issue as much as an environmental one.
Mongolia’s Coal Transition Will Not Follow a Single Timetable
Mongolia has major wind and solar resources, but renewable generation cannot immediately replace every function of coal. The country needs stronger transmission networks, storage, flexible generation, modern district heating, and investment in building efficiency. It must also manage electricity growth while avoiding greater dependence on imports.
Export coking coal and domestic thermal coal face different long-term pressures. Thermal coal used for electricity is increasingly challenged by renewable energy, storage, and cleaner generation. Metallurgical coal may retain demand for longer because conventional steel production still relies heavily on coke, although lower-carbon steel technologies are developing.
In the near term, Mongolia is likely to produce and export more coal as new rail links and processing facilities enter service. The deeper challenge is to use the resulting revenue to modernise the economy and energy system. Coal will remain central, but its future value will depend on transport efficiency, Chinese steel demand, domestic reform, and Mongolia’s ability to build reliable alternatives for electricity and winter heat.
