Abstract The Electrical Infrastructure database presents the spatial locations of Major Power Stations, Electricity Transmission Substations and Electricity Transmission Lines; in point and line format respectively, for known major power stations, transmission substations and transmission lines within Australia.This dataset describes Electricity Transmission Lines; structures in which high voltage electricity supply is converted, controlled or transformed. Currency Date modified: 17 January 2025 Modification frequency: As needed Data extent Spatial extent North: -9.00° South: -44.00° East: 154.00° West: 112.00° Source information In addition to Esri World Imagery, the latest information sources used to identify and attribute the electricity transmission lines were publicly available publications from utility companies, engineering firms and government agencies. Catalog entry: National Electricity Infrastructure Lineage statement The release information for previous and current versions of this dataset is included below: Data download: Mar 2015: Public release of GA’s Electricity Infrastructure Database (separated into 3 parts: Major Power stations, Electricity Transmission line and Electricity Transmission Substations) – Version 1 Mar 2017: Public release of GA’s Electricity Infrastructure Database (separated into 3 parts: Major Power stations, Electricity Transmission line and Electricity Transmission Substations) – Version 2 Feb 2021: Public release of GA’s Electricity Infrastructure Database (separated into 3 parts: Major Power stations, Electricity Transmission line and Electricity Transmission Substations) – Version 3 Nov 2024: Public release of GA’s National Electricity Infrastructure Database – Version 4 Web Service: Feb 2016: Public release as a subset of GA’s Electricity Infrastructure separated into 3 parts: Major Power stations, Electricity Transmission line and Electricity Transmission Substations) web service – Version 1 July 2017: Public release as a subset of GA’s Electricity Infrastructure separated into 3 parts: Major Power stations, Electricity Transmission line and Electricity Transmission Substations) web service – Version 2 Feb 2021: Public release as a subset of GA’s Electricity Infrastructure separated into 3 parts: Major Power stations, Electricity Transmission line and Electricity Transmission Substations) web service – Version 3 Jan 2025: Public release as GA’s National Electricity Infrastructure web service – Version 4 Data dictionary All layers Attribute name Description OBJECTID* Automatically generated system ID SHAPE* Geometry type (Polyline) FEATURETYPE A singled feature type “Transmission Line” is the collective name of the different facility subtypes identified in the CLASS field DESCRIPTION Brief description of the feature type CLASS The feature type subtypes:OverheadUnderground GA_GUID A global unique ID NAME The name of each individual feature OPERATIONALSTATUS A description of the feature’s status:Operational (functioning as an active transmission line)Non-Operational (no longer operational as an active transmission line) CAPACITYKV Transmission voltage of the powerline - kilovolts STATE The state where this feature is located SPATIALCONFIDENCE Confidence rating of the accuracy of the feature’s spatial location (5 high – 1 low) REVISED The date the feature was last revised COMMENT A free text field for adding general comments about this feature to external users LENGTH_M Length of the line in metres measured along the shortest distance with Earth curvature (geodesic line). SHAPE_Length Automatically generated length in decimal degrees Contact Geoscience Australia, clientservices@ga.gov.au