Length of transmission lines built or improved by the organization during the reporting period.
Length of Transmission Lines Built or Improved (PI4515)
- Reporting Format Decimal
- Metric Type Metric
- Metric Level Product/Service
- IRIS Metric Citation IRIS, 2022. Length of Transmission Lines Built or Improved (PI4515). v5.3.
Footnote
Organizations should footnote all assumptions used.
Usage Guidance
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This metric is intended to capture the length of transmission lines that the organization newly built or improved during the reporting period, a traditional measure of added transmission capacity. Improvements to transmission lines can include, for example, higher efficiency or greater resilience. Organizations should only report the length of transmission lines for which they have already completed construction or improvements, not any length financed but still under construction.
Impact Categories & Themes
SDG Goals & Targets
No Poverty
Good Health and Well-being
Gender Equality
Affordable and Clean Energy
- SDG Target 7.1
- SDG Target 7.3
- SDG Target 7.b
Decent Work and Economic Growth
Industry, Innovation and Infrastructure
Reduced Inequality
Sustainable Cities and Communities
Climate Action
Metric History
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June 2025 - IRIS+ v5.3b Released (current version)
No change.
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December 2024 - IRIS+ v5.3a Released
No change.
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June 2022 - IRIS+ v5.3 Released
New metric. Length of Transmission Lines Built or Improved (PI4515) was developed via the IRIS+ Clean Energy Expert Subgroup.