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

This data set describes approximate overhead power lines routes associated with Western Power's Transmission network.

Note: This dataset has been updated with transmission lines for the MENA region. This is the most complete and up-to-date open map of Africa's electricity grid network. This dataset serves as an updated and improved replacement for the Africa Infrastructure Country Diagnostic (AICD) data that was published in 2007. Coverage This dataset includes planned and existing grid lines for all continental African countries and Madagascar, as well as the Middle East region. The lines range in voltage from sub-kV to 700 kV EHV lines, though there is a very large variation in the completeness of data by country. An interactive tool has been created for exploring this data, the Africa Electricity Grids Explorer. Sources The primary sources for this dataset are as follows:Africa Infrastructure Country Diagnostic (AICD)OSM © OpenStreetMap contributorsFor MENA: Arab Union of Electricity and country utilities.For West Africa: West African Power Pool (WAPP) GIS databaseWorld Bank projects archive and IBRD mapsThere were many additional sources for specific countries and areas. This information is contained in the files of this dataset, and can also be found by browsing the individual country datasets, which contain more extensive information. Limitations Some of the data, notably that from the AICD and from World Bank project archives, may be very out of date. Where possible this has been improved with data from other sources, but in many cases this wasn't possible. This varies significantly from country to country, depending on data availability. Thus, many new lines may exist which aren't shown, and planned lines may have completely changed or already been constructed. The data that comes from World Bank project archives has been digitized from PDF maps. This means that these lines should serve as an indication of extent and general location, but shouldn't be used for precisely location grid lines.

Existing and planned transmission grid network (medium and high voltage lines) in the ECOWAS Region. Also covers other regions of West Africa. The source of the dataset is the West African Power Pool (WAPP) GIS database January 2017. WAPP collects and validates spatial information on transmission lines in a yearly basis. Includes substations from a 2014 World Bank project, digitized from a PDF map.

The California Energy Commission (CEC) Electric Transmission Line geospatial data layer has been created to illustrate electric transmission in California. When used in association with the other energy related geospatial data layers, viewers can analyze the geographic relationships with the electric transmission across the state.

The transmission line data is used to:1. Support the CEC Transmission Planning; 2. Support the CEC electric system analysis in California;3. Enhance electric transmission communication among California electric stakeholders ;4. Support CEC's illustrations of electric infrastructureData Dictionary:Object ID: a unique, not null integer field used to uniquely identify rows in tables in a geodatabase.Name: abbreviated transmission line owner and transmission line capacity in kilovolts (kV).kV: transmission line capacity in kilovolts (kV), data structure is a text string.kV (Sort): transmission line capacity in kilovolts (kV), data structure is a numeric double.Owner: abbreviated transmission line owner name.Status - last reported operational, proposed, closed, or unknown status of the transmission line.Circuit - notes if the transmission line segment is a Single, double, or triple circuit. Null values are unknown. Type - OH is overhead transmission lines, UG is underground, UW is underwater, null values are unknown.Legend - a summarized categories of transmission line owner and transmission capacity value in kilowatts (kV) for map legend purposes.Length (Mile) - the length of the transmission line segment in miles.Length (Feet) - the length of the transmission line segment in feet.TLine Name - the name of the transmission line segment reported to the California Energy CommissionSource - the data source used by California Energy Commission.CommentsCreatorCreator DateLast EditorLast Editor DateGlobalIDShape_LengthShape

AbstractThe 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 Transmission Substations; 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 (Point)

FEATURETYPE A singled feature type “Substation” 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:Bulk Supply PointSole UseSubstationSubtransmissionSwitchyardTerminalTransmissionZone

GA_GUID A global unique id

NAME The name of this feature

OPERATIONALSTATUS A description of the feature’s status:Operational (functioning as a substation)Non-Operational (no longer operational as a substation)

VOLTAGEKV The largest voltage, if multiple, transmission line transmitted to the substation - kilovolts

LOCALITYThe Location, such as suburb or town, where this feature is located

STATE The state where this feature is located

SPATIALCONFIDENCE Confidence rating of the accuracy of the feature’s spatial location (5 high to 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

X_COORDINATE Degree of longitude

Y_COORDINATE Degree of latitude

Contact Geoscience Australia, clientservices@ga.gov.au

A Guinea subset of this dataset: ECOWAS region - Existing and Planned Transmission Grid (2017)

Existing and planned transmission grid network (medium and high voltage lines) in the ECOWAS Region. Also covers other regions of West Africa.

The source of the dataset is the West African Power Pool (WAPP) GIS database January 2017. WAPP collects and validates spatial information on transmission lines in a yearly basis.

Includes substations from a 2014 World Bank project, digitized from a PDF map.

The current WP High Voltage Overhead Transmission Lines layer, indicating the approximate line routes of the following voltage types: 33kV 66kV

This dataset has been updated with transmission lines for the MENA region. This is the most complete and up-to-date open map of Africa's electricity grid network. This dataset serves as an updated and improved replacement for the Africa Infrastructure Country Diagnostic (AICD) data that was published in 2007. Coverage This dataset includes planned and existing grid lines for all continental African countries and Madagascar, as well as the Middle East region. The lines range in voltage from sub-kV to 700 kV EHV lines, though there is a very large variation in the completeness of data by country. An interactive tool has been created for exploring this data, the Africa Electricity Grids Explorer. Sources The primary sources for this dataset are as follows: Africa Infrastructure Country Diagnostic (AICD) OSM © OpenStreetMap contributors For MENA: Arab Union of Electricity and country utilities. For West Africa: West African Power Pool (WAPP) GIS database World Bank projects archive and IBRD maps There were many additional sources for specific countries and areas. This information is contained in the files of this dataset, and can also be found by browsing the individual country datasets, which contain more extensive information. Limitations Some of the data, notably that from the AICD and from World Bank project archives, may be very out of date. Where possible this has been improved with data from other sources, but in many cases this wasn't possible. This varies significantly from country to country, depending on data availability. Thus, many new lines may exist which aren't shown, and planned lines may have completely changed or already been constructed. The data that comes from World Bank project archives has been digitized from PDF maps. This means that these lines should serve as an indication of extent and general location, but shouldn't be used for precisely location grid lines.

Contained within the 3rd Edition (1957) of the Atlas of Canada is a map that shows the electrical generating network in Western Canada circa 1954. Generating plants are shown as either developed waterpower sites (in other words, hydro plants), or as fuel electric plants (thermal plants). The plants are portrayed on the basis of their capacity, measured in horsepower. The map also shows transmission lines of 60 000 volts or higher. Note that in a number of cases, cartographic considerations require that two or more side-by-side transmission lines be shown as a single line on the map. An interesting feature of the map is that it shows the location of potential hydro sites. Each of these is shown by a proportional circle measuring its potential capacity. There is an inset with two pie charts showing the distribution of net generating capability of facilities in 1954. Net Generating Capability estimates are based on actual operating experience assuming all equipment is available at the time of annual peak demand. These estimates make no allowance for the effect of unfavourable water or ice conditions. However, the estimates do allow for needs of the station and so deduct station services.