Green hydrogen project leak detection and prevention coverage
Measurement answer
What this metric measures
Reports the number and proportion of hydrogen projects equipped with continuous leak-detection systems, together with the technologies used and the procedures for testing, monitoring, maintenance, and functional verification.
Specification
Metric specification
- Result format
- Structured table
- Unit
- hydrogen projects; % of hydrogen projects — source-defined reporting unit
- Reporting basis
- Reporting period covered by the disclosure
- Aggregation
- Report the number of equipped hydrogen projects and the proportion of reported hydrogen projects that are equipped.
- Pillar
- Environmental
- Topic
- Climate change
- Controlled domain
- Climate and greenhouse gases
- Entity type
- Metric
Reporting boundary
Hydrogen projects within the organization’s reported project population.
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
- Page 121, Additional sector metrics table, AF.A23.3
- Adopting DisclosureAF.A23.3
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 121, Additional sector metrics table, AF.A23.3
Value structure
Dimensions and units
- Unit
- hydrogen projects; % of hydrogen projects — source-defined reporting unit
- Reporting basis
- Reporting period covered by the disclosure
Unit meaning: Values use hydrogen projects; % of hydrogen projects under the disclosed TNFD sector-guidance method, reporting period and boundary.
Table fields and units
- Leak-detection coverage status
- Number of hydrogen projects
- Proportion of hydrogen projects (%)
- Leak-detection technology
- Testing procedure
- Monitoring procedure
- Maintenance procedure
- Functional-verification procedure
Published dimensions
- Leak-detection coverage status
- Leak-detection technology used, including sensors, infrared detection, pressure monitoring, or artificial intelligence
- System testing procedures
- Monitoring procedures
- Maintenance procedures
- Functional-verification procedures
Calculation method
Formula information
- Status
- Specified
- Formula type
- Percentage
Formula
Coverage (%) = (number of reported hydrogen projects equipped with continuous leak detection systems / total reported hydrogen projects) × 100Apply the source-defined TNFD sector-guidance method within the stated reporting boundary. This is a standalone additional-sector structured reporting metric with explicit numerator outcome, denominator form, technology dimensions, and required procedural disclosures. It is not an emission factor, eligibility test, or calculation operand. No shortlisted metric has the same hydrogen-project population, continuous leak-detection construct, dimensions, and required method disclosures.
Variables
| Symbol | Variable | Definition | Unit |
|---|---|---|---|
N_equipped | Equipped hydrogen projects | Number of reported hydrogen projects equipped with continuous leak detection systems. | hydrogen projects |
N_total | Reported hydrogen projects | Total number of hydrogen projects in the reported project population. | hydrogen projects |
Coverage | Leak detection and prevention coverage | Proportion of reported hydrogen projects equipped with continuous leak detection systems. | % |
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
- Page 121, Additional sector metrics table, AF.A23.3
Supports: The official TNFD sector guidance supports the identity, boundary and method basis of “Green hydrogen project leak detection and prevention coverage”.
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).
- Disclose the technology or technologies used for continuous leak detection.
- Disclose procedures for testing, monitoring, maintenance, or functional verification of leak-detection systems.
- Disclose the reported hydrogen-project population used as the denominator for the proportion.
Record-specific limitations
- The metric measures the presence of continuous leak-detection systems and associated procedures; it does not measure hydrogen leakage quantities, leak rates, avoided emissions, or system effectiveness.
- The denominator must be disclosed because the source requires a proportion of hydrogen projects but does not define project eligibility or organizational consolidation rules.
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.