Fleet alternative-energy use and clean auxiliary-power targets
Measurement answer
What this metric measures
Reports fleet vessels using alternative fuel energy by fuel type and separately reports clean auxiliary-power usage targets.
Specification
Metric specification
- Result format
- Structured table
- Unit
- Structured table — see field-level units
- Reporting basis
- Organisation's disclosed reporting period, with target year disclosed for each clean auxiliary-power target
- Aggregation
- Report the number and percentage of fleet vessels using alternative fuel energy by fuel type, together with separately identified clean auxiliary-power usage targets.
- Pillar
- Environmental
- Topic
- Alternative vessel energy and auxiliary power
- Controlled domain
- Energy
- Entity type
- Metric
Reporting boundary
Vessels within the organisation's disclosed fleet boundary; targets apply to the organisation's disclosed applicable fleet or vessel activities.
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
- TNFD additional sector guidance for fishing, fish trading, fish processing and retail, p. 73, Section 3.3, Table 16. | Extracted evidence: additional sector metric under Impact driver / Pollution and pollution removal requiring vessel counts and fleet percentages using alternative fuels, including hydrogen, ammonia, methanol and biofuels, alongside targets for clean auxiliary-power usage. | p. 73, Section 3.3, Table 16
- Adopting DisclosureMT.A2.3
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Version 1.0, June 2025
- Requirement
- Recommended
- Relationship
- Maps Source Identity
- Mapping outcome
- Published
- Source locator
- p. 73, Section 3.3, Table 16
Value structure
Dimensions and units
- Unit
- Structured table — see field-level units
- Reporting basis
- Organisation's disclosed reporting period, with target year disclosed for each clean auxiliary-power target
Unit meaning: Each field uses its stated unit and retains the applicable sector, reporting boundary, period and method.
Table fields and units
- disclosure component
- alternative fuel type or auxiliary-power target description
- fleet boundary
- total fleet vessels
- vessels using alternative fuel energy
- percentage of fleet using alternative fuel energy
- target value
- target year
- measurement and eligibility basis
Published dimensions
- disclosure component: actual fleet alternative-energy use or clean auxiliary-power usage target
- alternative fuel type: hydrogen, ammonia, methanol, biofuel or other disclosed type
- disclosure field: vessel count, fleet percentage, target percentage or target year
- fleet boundary
Disclosure method
Formula information
- Status
- Not applicable
- Formula type
- Structured Disclosure
Disclosure form
No single formulaReport the source-defined result with its stated fields and method disclosures. The candidate contains two related but distinct reportable components: observed fleet alternative-energy adoption and prospective clean auxiliary-power targets. Publishing one structured family preserves those components, their distinct value shapes, and fuel-type disaggregation without treating fuel types or target parameters as standalone metrics. No shortlisted metric has the same vessel-fleet construct, fuel-type dimensions, and target component.
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
- TNFD additional sector guidance for fishing, fish trading, fish processing and retail, p. 73, Section 3.3, Table 16. | Extracted evidence: additional sector metric under Impact driver / Pollution and pollution removal requiring vessel counts and fleet percentages using alternative fuels, including hydrogen, ammonia, methanol and biofuels, alongside targets for clean auxiliary-power usage. | p. 73, Section 3.3, Table 16
Supports: The official TNFD sector guidance supports the identity, boundary and method basis of “Fleet alternative-energy use and clean auxiliary-power targets”.
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).
- Define the fleet boundary and total fleet denominator used for the reported percentage.
- Disaggregate vessel counts and percentages by alternative fuel type.
- State the eligibility and measurement basis for classifying a vessel as using alternative fuel energy.
- For each clean auxiliary-power target, disclose the target metric, target value, target year, covered fleet or activities, and whether the target is absolute or percentage-based.
Record-specific limitations
- The extract identifies example alternative fuels but does not provide a complete eligibility definition for alternative fuel energy.
- The clean auxiliary-power target is a prospective target disclosure and is not interchangeable with the actual vessel count or fleet percentage.
- The extract does not specify whether alternative-energy use means capability, installed equipment, fuel consumption, operational use, or another basis; organisations must disclose the basis used.
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.