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MetricPollution

Outdoor lighting characteristics relevant to light pollution

Measurement answer

What this metric measures

Reports characteristics of outdoor lighting relevant to light pollution, including lighting classification, colour temperature, spectral output, spatial coverage, operating duration and dimming practices across the disclosed area boundary.

Specification

Metric specification

Result format
Structured table
Unit
Structured table — see field-level units
Reporting basis
Reporting period used for the disclosed outdoor-lighting observations
Aggregation
Reported separately for each applicable lighting characteristic, with counts, proportions, quantities, area-normalized values or dimming values using their stated field-level units
Pillar
Environmental
Topic
Pollution
Controlled domain
Pollution
Entity type
Metric

Reporting boundary

Outdoor lighting across owned, controlled, or project-affected areas

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 79, Impact driver > Pollution/pollution removal, metric no. EH.A2.0 / RE.A2.0
    Open official framework source
  • Adopting Disclosure

    TNFD sector guidance

    EH.A2.0
    Publisher
    Taskforce on Nature-related Financial Disclosures
    Edition
    Version 1.0, January 2025
    Requirement
    Recommended
    Relationship
    Maps Source Identity
    Mapping outcome
    Published
    Source locator
    Page 79, Impact driver > Pollution/pollution removal, metric no. EH.A2.0 / RE.A2.0
    Open official framework source
  • Adopting Disclosure

    TNFD sector guidance

    RE.A2.0
    Publisher
    Taskforce on Nature-related Financial Disclosures
    Edition
    Version 1.0, January 2025
    Requirement
    Recommended
    Relationship
    Maps Source Identity
    Mapping outcome
    Published
    Source locator
    Page 79, Impact driver > Pollution/pollution removal, metric no. EH.A2.0 / RE.A2.0
    Open official framework source

Value structure

Dimensions and units

Unit
Structured table — see field-level units
Reporting basis
Reporting period used for the disclosed outdoor-lighting observations

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

Table fields and units

  • area or project-affected location
  • area relationship
  • lighting characteristic
  • indicator value
  • unit
  • denominator where applicable
  • BUG rating where applicable
  • colour temperature where applicable
  • spectral-output basis where applicable
  • spatial-coverage basis where applicable
  • operational-duration basis where applicable
  • dimming-practice description
  • degree of dimming where applicable

Published dimensions

  • area relationship: owned, controlled, or project-affected
  • lighting characteristic
  • BUG rating
  • colour temperature threshold of 2700K
  • spectral output
  • spatial coverage
  • operational duration
  • dimming practice
  • field-level unit

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. EH.A2.0 / RE.A2.0 specifies a multi-field reporting family covering distinct characteristics of outdoor lighting. The family is independently reportable as a structured pollution-impact disclosure, but its individual count, percentage, lumen, lumen-per-hectare, area and dimming fields must remain separately identified rather than being flattened into one scalar. The shortlisted light-and-noise management metric is broader and management-oriented, while the compliant-fixtures percentage is only one potential component; neither is the same construct.

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 79, Impact driver > Pollution/pollution removal, metric no. EH.A2.0 / RE.A2.0

    Supports: The official TNFD sector guidance supports the identity, boundary and method basis of “Outdoor lighting characteristics relevant to light pollution”.

    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).

  • Definition and inventory coverage of outdoor lights assessed.
  • Area boundary and whether each area is owned, controlled, or project-affected.
  • BUG-rating classification method and rating basis.
  • Colour-temperature measurement basis and treatment of lights above 2700K.
  • Method for measuring spectral output, spatial coverage and operational duration where reported.
  • Definition and measurement approach for dimming practices, including degree of dimming.
  • Unit and denominator for every reported field, including any lumen-per-hectare value.

Record-specific limitations

  • This is a structured family of lighting-pollution indicators, not a single additive or directly comparable scalar.
  • TNFD's extracted specification uses multiple units; values must retain their field-level unit and denominator.
  • Comparability depends on the organization disclosing its lighting inventory, measurement basis, coverage and treatment of operating and dimming practices.

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.