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Waste management

Waste management
-41 % Total waste generation decreased in 2020 compared with 2019
-12 % Total ash and slag waste generation decreased in 2020 compared with 2019

In accordance with legislative requirements, Inter RAO develops draft standards for waste generation and the limits of its disposal. Solid residue from coal firing is the most widespread type of waste from the Group’s energy facilities. Ash and slag waste, which account for the bulk of waste generated by the Group, are classified as hazard class 5, which means they have a minimal impact on the environment.

In order to achieve its environmental goals in terms of sustainable waste management, the Group engages in the following activities:

  • Improving the energy efficiency of production, energy and resource conservation, and technological discipline.
  • Organizing separate waste collection and the beneficial use of any production waste to the extent that it is possible.
  • Eliminating environmentally hazardous, harmful substances, and high-waste technological processes from production where possible and monitoring the environmental features of energy fuels, materials, and equipment that are purchased and used.

Systematic work is underway to reduce the volume of industrial waste sent to landfills for disposal, including similar municipal solid waste, by organizing selective waste collection and sending it off for utilization.

Inter RAO companies transfer the waste they generate under contracts to specialized organizations that have licenses to transport, collect, and further handle waste. The Group’s power plants have organized the selective collection of certain types of waste that are then transferred for disposal. Inter RAO does not transport waste on its own. The waste it generates is transferred to specialized organizations that have licenses for the right to collect and further handle waste.

GRI 306–4 Solid substances generated during coal firing (ash and slag waste) are the primary type of waste produced at the Group’s power facilities, accounting for roughly 96% of the total volume of all waste generated by the Group. Based on the extent of their environmental impact, ash and slag waste is classified as hazard class 5 (minimal environmental impact).

In 2020, total ash and slag waste generation decreased by 12% compared with 2019 to 2,109,000 tons. The main reasons for this are a decrease in coal-fired generation, an increase in its efficiency as well as the sale of the Ekibastuzskaya TPP-2.

The generation and transfer of hazard class 3 waste increased by sixfold to 18,000 tons due to a one-off event at the Verkhnetagilskaya TPP in 2020 to clean fuel oil tanks: the generation of 16,000 tons of sludge from the cleaning of tanks and oil and petroleum product pipelines. This waste was transferred for neutralization.

The total mass of the wastes by its type and method of treatment, tons 2018 2019 2020
1st class 19 20 15
2nd class 20 17 7
3nd class 1 518 3 079 18 425
4th class 16 601 19 353 18 216
5th class, thousands tons 3 981 3 725 2 171
– including ash and slag waste 3 404 2 392 2 109
– other 5th class waste 577 1 334 62