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MetricBrine disposal from desalination

Hydrogen production projects with engineered brine-disposal measures

Measurement answer

What this metric measures

Reports the number and percentage of hydrogen production projects using desalinated water that implement engineered brine-disposal measures, with the disposal methods used identified.

Specification

Metric specification

Result format
Structured table
Unit
Structured table — see field-level units
Reporting basis
Organization's reporting period
Aggregation
Count eligible hydrogen production projects using desalinated water and report their percentage that implement engineered brine-disposal measures, disaggregated by disposal method.
Pillar
Environmental
Topic
Brine disposal from desalination
Controlled domain
Pollution
Entity type
Metric

Reporting boundary

Hydrogen production projects using desalinated water within the organization's reporting boundary.

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 Disclosure

    TNFD sector guidance

    Source evidence
    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 115, Table AF.C23.2
    Open official framework source
  • Adopting Disclosure

    TNFD sector guidance

    AF.C23.2
    Publisher
    Taskforce on Nature-related Financial Disclosures
    Edition
    Version 1.0, June 2026
    Requirement
    Conditional
    Relationship
    Maps Source Identity
    Mapping outcome
    Published
    Source locator
    page 115, Table AF.C23.2
    Open official framework source

Value structure

Dimensions and units

Unit
Structured table — see field-level units
Reporting basis
Organization's reporting period

Unit meaning: Each field uses its stated unit and retains the applicable sector, reporting boundary, period and method.

Table fields and units

  • Brine-disposal method
  • Hydrogen production projects using desalinated water (count)
  • Projects implementing engineered brine-disposal measures (count)
  • Projects implementing engineered brine-disposal measures (% of eligible projects)

Published dimensions

  • project implementation status for engineered brine-disposal measures
  • brine-disposal method

Disclosure method

Formula information

Status
Not applicable
Formula type
Structured Disclosure

Disclosure form

No single formula

Report the source-defined result with its stated fields and method disclosures. AF.C23.2 specifies a reportable project-level outcome with both count and percentage outputs and an explicit required method dimension. It is distinct from waste-disposal metrics because it concerns engineered management of desalination brine at eligible hydrogen-production projects.

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 115, Table AF.C23.2

    Supports: The official TNFD sector guidance supports the identity, boundary and method basis of “Hydrogen production projects with engineered brine-disposal measures”.

    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).

  • Specify the brine-disposal methods used.
  • Disclose the basis used to identify hydrogen production projects using desalinated water.
  • Disclose the criteria used to determine whether a project implements engineered brine-disposal measures.

Record-specific limitations

  • The extracted evidence does not define the engineering criteria for qualifying disposal measures.
  • The extracted evidence does not specify whether projects should be disaggregated by geography, project stage, operational status, or desalination technology.

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.