Russian Thermal Coal: Grades, Quality and Export

Thermal coal occupies a central place in Russia's fuel and energy complex. Unlike coking coal, it is used primarily for combustion at thermal power plants, in municipal energy and industrial boilers. Russia's thermal coal resource base is distributed across several major basins: the Kuznetsk (Kuzbass), Kansk-Achinsk, Pechora, South Yakutia, Irkutsk and others. For the B2B segment, these products matter both as an object of long-term contracts with power generating companies, industrial enterprises and export traders. The category's specificity lies in the fact that quality is determined not only by calorific value but also by ash content, sulphur content, moisture and particle size distribution, while logistics play a decisive role in the final cost per tonne.

Grade Classification and Quality Standards

The classification of thermal coals is based on GOST 25543-2013, which distinguishes grades by genetic and technological parameters. For energy purposes, the most important are brown coals (grade B), long-flame (D), gas (G), as well as lean (T) and low-caking (SS) coals. Grades D and G are widely used in power generation due to their high volatile matter yield and good ignitability, while SS and T are used in layered combustion and as technological fuel.

Quality requirements for coals of the Kuznetsk and Gorlovka basins for energy purposes are established by GOST R 51586-2000. The standard regulates product name, grade composition, lump size, ash content, total sulphur mass fraction, moisture and calorific value. For the Kuznetsk Basin, the total sulphur mass fraction must not exceed 1.0%, for the Gorlovka Basin - 0.5%. Separate standards apply to coals of Eastern Siberia (GOST 32352-2013) and the Kansk-Achinsk Basin (GOST R 57021-2016).

Key quality parameters of thermal coal include net calorific value (Qir), which for typical hard thermal coals of grade D ranges from 4,710 to 5,350 kcal/kg, ash content (Ad) - usually from 10 to 16.5% for beneficiated products, and total sulphur mass fraction (Sd) - from 0.26 to 0.33% for low-sulphur coals. For brown coals of the Kansk-Achinsk Basin, calorific value can reach 4,400-4,500 kcal/kg, which is a high figure for this class.

Output and Production

By the end of 2025, Russian coal output remained at the previous year's level and amounted to 440 million tonnes (including new regions). Of this volume, thermal coal accounted for 278.7 million tonnes, confirming its dominant role in the production structure. For comparison, coking coal output in 2025 was 101 million tonnes, down 8.8% amid weak metallurgical raw material markets.

The main production region is Kuzbass, which accounts for a significant share of Russian thermal coal. In addition to Kuzbass, major production centres include the Kansk-Achinsk Basin (Krasnoyarsk Krai), where brown coal reserves are concentrated, the Pechora Basin (Komi Republic), the South Yakutia Basin (Sakha Republic), the Irkutsk Basin and deposits in Zabaykalsky Krai. Open-pit mining remains predominant: in 2025, about 344 million tonnes of coal were mined by open-pit method, accounting for about 79% of the total volume.

Production growth in some regions compensates for declines in others. For example, companies operating in Yakutia increased output by 5.8% in 2025 to 55 million tonnes per year, driven by the development of the Elga deposit and increased export supplies to Asia.

Beneficiation Technologies

Thermal coal beneficiation aims to reduce ash and sulphur content, increase calorific value and stabilise particle size distribution. Russian processing plants use several technological schemes. The most common is heavy-media beneficiation in separators and cyclones, which effectively separates coal and rock by density. For fine fractions, flotation is used, and for coarse coal - heavy-media cyclones in two stages.

Modern plants increasingly introduce XRT separation (X-ray separation) and intelligent sorting systems. These technologies increase concentrate yield, reduce losses and involve hard-to-beneficiate coals in processing. Unlike coking coal, where beneficiation depth often reaches 0 mm, for thermal coal a simpler scheme with the separation of coarse classes and removal of rock is economically justified.

Beneficiation efficiency depends on the coal's beneficiability category. Many Russian thermal coals belong to the medium and difficult categories, which requires more complex schemes and modern equipment. In recent years, interest in combined technologies combining gravity, flotation and sensor methods has been growing.

Exports: Geography and Dynamics

Exports remain a key driver of the industry. In 2025, Russia increased coal exports by 4% to 203 million tonnes, with the entire increase provided by thermal coal - its supplies grew by 8% to 164.2 million tonnes. Supplies of more expensive coking coal declined by 11% to 38.4 million tonnes.

China remains the largest buyer of Russian coal. In 2025, supplies to China amounted to 93.1 million tonnes (a 2% decline vs 2024). China has been reducing imports for the second consecutive year amid growing domestic output and pressure on prices, but remains a key market for Russian exporters.

India is the second most important market. In 2025, exports to India grew by 2% to 25.2 million tonnes. Indian energy companies are increasing purchases amid rising electricity consumption and limited supply from other suppliers.

Other destinations showed the most dynamic growth. Exports to South Korea grew by 40% to 21.4 million tonnes, which analysts explain by a deficit of supplies from Australia and Indonesia. Supplies to Turkey increased by 22% to 17.9 million tonnes, including for trading operations. Exports to Vietnam grew by 30% to 7 million tonnes, driven by the expansion of coal generation capacity. Supplies to Japan, by contrast, fell by 40% to 1.1 million tonnes.

Thus, export geography is shifting towards the Asia-Pacific region, with China and India remaining the main buyers, while South Korea, Turkey and Vietnam form new growth points.

Logistics and Supply Conditions

Thermal coal is transported mainly by rail to ports in the Far East and southern Russia, and then by sea. The key constraint is the capacity of the Eastern Polygon. In 2025, 118.2 million tonnes of coal were shipped eastward via the Russian Railways network, 6.1% more than in 2024 and a historical maximum. Southward shipments grew by 20.2% to 20.5 million tonnes.

Despite the growth in volumes, Russian Railways' losses from coal transportation towards the Eastern Polygon in January-October 2025 amounted to RUB 14.8 billion, reflecting the imbalance between tariffs and infrastructure costs. For exporters, delivery times, shipment stability and logistics costs are critical: at low world coal prices, transport costs can reach half the final cost per tonne.

Financial support for the transaction may include letters of credit, bank guarantees and cargo insurance. For long-term contracts, it is useful to fix a price adjustment mechanism for changes in logistics tariffs, exchange rate fluctuations and freight costs. Thermal coal supplies are often carried out on FOB or CIF terms, which requires the buyer to understand all price components.

Prospects and Selection Factors

The Russian thermal coal industry demonstrates resilience amid low world prices, rising costs and limited capacity of eastern routes. Key challenges include price volatility, a stronger ruble, higher logistics costs and competition from Australia, Indonesia and Mongolia. At the same time, growing demand in India, Southeast Asia and Turkey creates new opportunities for increasing supplies.

For buyers, not only price per tonne matters but also grade composition stability, ash content, sulphur content, calorific value, particle size distribution and supply chain reputation. Understanding standards, technological differences and the structure of export flows helps reduce risks and build long-term contracts with Russian producers.

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If you are looking for Russian thermal coal, need advice on grade selection, quality parameters and supply organisation, please contact our team at info@apptrade.ru. We will help you find the right product, verify documentation and organise supply.