This European Standard provides a harmonized methodology for calculating GHG emissions from the ferro-alloys industry based on the mass balance approach2. It also provides key performance indicators over time of ferro-alloys plants. It addresses the following direct and indirect sources of GHG: — Scope 1 – Direct GHG emissions from sources that are owned or controlled by the company, such as emissions result from the following sources: — smelting (reduction) process; — decomposition of carbonates inside the furnace; — auxiliaries operation related to the smelting operation (i.e. aggregates, drying processes, heating of ladles, etc.). — Scope 2 – Indirect GHG emissions from: — the generation of purchased electricity consumed in the company’s owned or controlled equipment. This European Standard is to be used in conjunction with EN 19694-1, which contains generic, overall requirements, definitions and rules applicable to the determination of GHG emissions for all energy-intensive sectors, provides common methodological issues and defines the details for applying the rules. The application of this standard to the sector-specific standards ensures accuracy, precision and reproducibility of the results and is for this reason a normative reference standard. The requirements of these standards do not supersede legislative requirements.