Digestate generated from biogas or alternative-fuel production
Measurement answer
What this metric measures
Reports the total mass of digestate generated from biogas or alternative-fuel production processes during the reporting period.
Specification
Metric specification
- Result format
- Single value
- Unit
- tonnes — source-defined reporting unit
- Reporting basis
- Reporting period
- Aggregation
- Total mass of digestate generated during the reporting period.
- Pillar
- Environmental
- Topic
- Digestate generation from fuel production
- Controlled domain
- Materials, circularity and waste
- Entity type
- Metric
Reporting boundary
Digestate produced from the reporting organisation's biogas or alternative-fuel production processes during the reporting period.
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
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Final English sector guidance collection through August 2026 (17 documents)
- Requirement
- Not Specified
- Relationship
- Defines Disclosure
- Mapping outcome
- Direct Evidence
- Source locator
- Additional sector guidance – Alternative Food v1.0, p.118, Table 12, AF.A2.3 | Page 118, Table 12, AF.A2.3
- Adopting DisclosureAF.A2.3
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Version 1.0, June 2026
- Requirement
- Recommended
- Relationship
- Maps Source Identity
- Mapping outcome
- Published
- Source locator
- Page 118, Table 12, AF.A2.3
Value structure
Dimensions and units
- Unit
- tonnes — source-defined reporting unit
- Reporting basis
- Reporting period
Unit meaning: Values use tonnes under the disclosed TNFD sector-guidance method, reporting period and boundary.
Published dimensions
- Production-process type: biogas or alternative-fuel production
- Measurement basis used for the reported digestate mass, where relevant
Calculation method
Formula information
- Status
- Specified
- Formula type
- Sum
Formula
Total digestate generated = sum of digestate mass generated from included biogas and alternative-fuel production processes during the reporting period.Apply the source-defined TNFD sector-guidance method within the stated reporting boundary. AF.A2.3 specifies a standalone, reportable total mass of digestate produced, with an explicit unit of tonnes and production-process boundary. It is more specific than generic waste-generated metrics because it is limited to digestate from biogas or alternative-fuel production.
Variables
| Symbol | Variable | Definition | Unit |
|---|---|---|---|
m_i | Digestate mass from process i | Mass of digestate generated by each included biogas or alternative-fuel production process during the reporting period. | tonnes |
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 30 August 2026
TNFD additional sector guidance collection
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Final English sector guidance collection through August 2026 (17 documents)
- Locator
- Additional sector guidance – Alternative Food v1.0, p.118, Table 12, AF.A2.3 | Page 118, Table 12, AF.A2.3
Supports: The official TNFD sector guidance supports the identity, boundary and method basis of “Digestate generated from biogas or alternative-fuel production”.
Open official source
Use with context
Interpretation boundaries
Method disclosures required
Source-edition basis: TNFD sector guidance, Final English sector guidance collection through August 2026 (17 documents).
- Identify the biogas or alternative-fuel production processes included.
- State the measurement basis and method used to determine digestate mass.
- State the organisational or operational boundary used for included production processes.
- Explain any material exclusions or estimation methods.
Record-specific limitations
- The extracted specification requires total mass but does not specify whether mass is measured on a wet, dry or other basis.
- The extracted specification does not provide a prescribed treatment for digestate transferred, stored, processed further or used after generation.
- The metric title refers to volume, but the specification explicitly requires reporting total mass in tonnes.
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.