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GDR-M – General Disclosure Requirement for metrics

Revised ESRS 2026

ESRS Standard

47. The objective of this GDR is to support the preparation of the disclosures on metrics by the undertaking.

48. The undertaking shall disclose the metrics required by topical standards in relation to material impacts, risks and opportunities, as well as metrics defined on an entity-specific basis in accordance with ESRS 1 General Requirements, paragraph 11. This may include metrics used by the undertaking to evaluate its performance and to track the effectiveness of its actions to manage its material impacts, risks and opportunities.

49. For each metric, the undertaking shall disclose:

  • (a) the metric itself, its unit of measurement, the calculation methodology and the sources (e.g. input parameters) used for the calculation, and where relevant, the estimation methodology, including significant assumptions and limitations;

  • (b) for value chain metrics, if applicable, the reliance on data from indirect sources or proxies and any planned actions to improve the data quality in the future (see ESRS 1 General Requirements, Chapter 5);

  • (c) contextual information about the metric; and

  • (d) significant changes in the performance compared to the previous reporting periods, including progress made in achieving the targets set by the undertaking, and, in the case of major acquisitions or disposals, how the transaction affects that progress.


Application Requirements (AR)

AR 42 for para. 48
​Metrics include those defined in ESRS, as well as metrics identified on an entity-specific basis, whether taken from other sources or developed by the undertaking itself, such as for ESRS S2-S4 topical standards that do not prescribe specific metrics.

AR 43 for para. 49(a)
The European system of units of measurement stems from the International System of Units (SI). The units of measurement shall be expressed using the names and symbols set down in Directive 80/181/EEC, as amended by Directive 2009/3/EC. Metrics shall be disclosed using the units specified in the topical standards, which are aligned with that Directive. SI prefixes and their corresponding symbols may be used to designate certain decimal multiples or submultiples where appropriate, in order to present values at the level the undertaking considers most appropriate. For example, instead of reporting 1 200 000 tCO₂e, the undertaking may report 1.2 MtCO₂e.

AR 44 for para. 49(c)
Contextual information about a metric may include:

  • (a) the reasons why the undertaking has chosen a particular measurement approach, as well as the reasons for the inputs and assumptions it uses; and

  • (b) for environmental metrics, the specific environmental conditions and characteristics of the area where the impact is occurring that are necessary to understand the metric in question.


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