Sulfur oxides emissions to air as SO2
Measurement answer
What this metric measures
Sulfur oxides emissions to air as SO2 is the mass released from own operations during the reporting period, expressed on the source-defined sulfur-dioxide basis and retained by facility, source, threshold profile and measurement method.
Specification
Metric specification
- Result format
- Structured table
- Unit
- Structured table — see field-level units
- Reporting basis
- Reporting-period flow
- Aggregation
- Compatible SO2-basis, non-overlapping rows only; sulfate, fuel sulfur and sulfur hexafluoride stay separate
- Pillar
- Environmental
- Topic
- Pollution, microplastics and hazardous substances
- Controlled domain
- Pollution
- Entity type
- Metric
Reporting boundary
Own-operation releases to air for controlled facilities under the applicable current ESRS and E-PRTR threshold profile. Sulfur oxides are reported on the SO2 mass basis; sulfate, fuel sulfur and sulfur hexafluoride are excluded.
Verified source occurrences
Framework coverage
This is one canonical metric. The bindings below show every verified framework occurrence without creating duplicate metric pages. Edition, disclosure, role, and relationship remain source-specific.
- Adopting DisclosureSource evidence
EU laws and regulatory guidance
- Publisher
- European Union
- Edition
- Consolidated edition current on 15 August 2026 and applicable to reporting year 2026
- Requirement
- Not Specified
- Relationship
- Defines Disclosure
- Mapping outcome
- Direct Evidence
- Source locator
- Annex II pollutant identities, chemical expressions and air, water and land thresholds
Value structure
Dimensions and units
- Unit
- Structured table — see field-level units
- Reporting basis
- Reporting-period flow
Unit meaning: This metric is reported as a structured table; each field carries the unit stated in the table fields below.
Table fields and units
- Facility, source, activity, country and financial or operational control boundary
- Emitted mass (kg SO2 — kilograms of sulfur oxides expressed as sulfur dioxide; 1 t = 1,000 kg)
- Annual air-reporting threshold and edition — a reporting gate, not an emission limit
- Measurement, calculation, factor or estimation method, source and uncertainty
- Reporting period and missing, below-threshold or not-measured reason
Published dimensions
- Sulfur oxides emission row
- Facility, source and activity
- Country and financial or operational control boundary
- Direct, periodic, calculated, factor-based or estimated method
- Reporting period, threshold profile and method edition
- Sulfur-dioxide expression basis
Disclosure method
Formula information
- Status
- Not applicable
- Formula type
- Structured Disclosure
Disclosure form
No single formulaPopulate the structured fields from qualifying source observations and retain each field-level unit, boundary, status, and method; do not collapse the disclosure into one calculated value.
Verified sources
Evidence and status sources
Sustopedia checked each record-specific claim directly against primary publisher material. Labels distinguish current measurement authority from future compatibility and corroborative, legal, edition, or method status context. Corroborative evidence can support a stated limitation but cannot establish the core measurement by itself.
Measurement evidence
- Measurement evidenceChecked 15 August 2026
Regulation (EC) No 166/2006 concerning the European Pollutant Release and Transfer Register
- Publisher
- European Union
- Edition
- Consolidated edition current on 15 August 2026 and applicable to reporting year 2026
- Locator
- Annex II pollutant identities, chemical expressions and air, water and land thresholds
Supports: Official publisher reference linked specifically to the Sustopedia metric “Sulfur oxides emissions to air as SO2”; interpret it with the source-edition basis and limitations shown on this page.
Open official source
Use with context
Interpretation boundaries
Method disclosures required
Source-edition basis: Binding ESRS E2-4 consolidated 1 January 2025, the current E-PRTR Annex II SOx/SO2 row, and current GRI 305-7 link-out evidence.
- Facility, source, activity, country and control boundary
- Sulfur oxides expressed as sulfur dioxide mass
- Released mass in kg SO2, meaning kilograms of sulfur oxides expressed as sulfur dioxide
- Applicable air threshold and threshold edition as a reporting gate
- Direct, periodic, calculated, factor-based or estimated method and source
- Reporting period, uncertainty, missing-value state and method edition
Record-specific limitations
- Stack measurement and conversion practices can differ across facilities and reporting methods.
- Annual released mass does not establish ambient concentration, deposition, exposure, acidification or compliance.
- The reporting threshold is a disclosure gate, not an emission limit, target or safe level.
Interpret this metric with the stated reporting boundary, period convention, value shape, and unit. Results prepared with different boundaries or conventions may not be directly comparable.
Measurement evidence supports the core record-specific claims described above. Corroborative evidence can support limitations, while compatibility and status sources provide their separately labelled context. None of these cards by itself determines an organisation's legal applicability, filing readiness, assurance status, or compliance conclusion.