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

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

*** 7/19/22: This dataset and its accompanying map are no longer available since they are inaccurate and outdated. The Minnesota Department of Commerce is no longer maintaining or fielding requests related to this data as it has been unable to consistently obtain accurate, up-to-date information on high voltage transmission lines and substation locations from transmission owners in the state.***

For alternative sources for transmission line and substation information, see the transmission lines and substations section of MnGeo's information webpage on utilities: https://www.mngeo.state.mn.us/chouse/utilities.html#transmission

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Information describing the previously available dataset is provided in the rest of this metadata record for reference.
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The electric transmission network information consisted of transmission lines, with associated substations, designed to handle 60 Kilovolts or greater.

The Minnesota Electric Transmission Mapping Project developed two geographic information system datasets: transmission lines and substations. This metadata record describes both datasets.

In 2002, each electric utility company was mailed a request for their facility information which could be provided in either digital or paper form. The responses varied significantly in quality and quantity. In addition, the companies expressed concerns about providing the information because of security concerns. Data users were strongly encouraged to read the data quality section of this documentation.

Datasets were published in 2003, 2007, 2014, 2016, and 2021. In 2016 a few changes were made to improve the positional accuracy of lines and substations. The dataset was last updated in July 2021.

The Minnesota Electric Transmission Mapping Project was a collaborative effort between the Minnesota Department of Commerce and the Minnesota Geospatial Information Office.

This feature layer has been archived. It will no longer be updated or maintained. Last Data Update: 09/30/2024U.S. Electric Power Transmission Lines This feature layer depicts electric power transmission lines in the United States. Transmission Lines are the system of structures, wires, insulators and associated hardware that carry electric energy from one point to another in an electric power system. Lines are operated at relatively high voltages varying from 69 kV up to 765 kV, and are capable of transmitting large quantities of electricity over long distances. Underground transmission lines are included where sources were available. 138 Kilovolt Transmission LineData currency: 09/30/2024Data modification: noneFor more information: Electricity ExplainedFor feedback, please contact: ArcGIScomNationalMaps@esri.com

Overview:

Global results from gridfinder model, produced by ESMAP based on joint work with Facebook and others. Uses night-time lights, road networks and existing grid network data to predict the location of transmission and distribution lines globally. Validated in several countries with ~70% accuracy at 1 km.

More information:

Blog with brief overview: https://blogs.worldbank.org/energy/using-night-lights-map-electrical-gri...
Full research paper: https://www.nature.com/articles/s41597-019-0347-4
Visualization: https://gridfinder.org/

The following data are included:

• grid.gpkg: Vectorized predicted distribution and transmission line network, with existing OpenStreetMap lines tagged in the 'source' column
• targets.tif: Binary raster showing locations predicted to be connected to distribution grid.
• lv.tif: Raster of predicted low-voltage infrastructure in kilometres per cell.

U.S. Electric Power Transmission Lines This feature layer, utilizing data from Homeland Infrastructure Foundation-Level Data (HIFLD), depicts electric power transmission lines in the United States. Per HIFLD, "Transmission Lines are the system of structures, wires, insulators and associated hardware that carry electric energy from one point to another in an electric power system. Lines are operated at relatively high voltages varying from 69 kV up to 765 kV, and are capable of transmitting large quantities of electricity over long distances. Underground transmission lines are included where sources were available." 138 Kilovolt Transmission LineData downloaded: 5/16/2025Data source: Transmission LinesData modification: none For more information: Electricity Explained Support documentation: Transmission LinesFor feedback, please contact: ArcGIScomNationalMaps@esri.com The Homeland Infrastructure Foundation-Level Data Per HIFLD, "The Homeland Infrastructure Foundation-Level Data (HIFLD) Subcommittee was established…to address improvements in collection, processing, sharing, and protection of homeland infrastructure geospatial information across multiple levels of government, and to develop a common foundation of homeland infrastructure data to be used for visualization and analysis on all classification domains."

The transmission network map is obtained from the OpenStreetMap (OSM) database version 06.Feb.2017. The level of completeness varies across different areas due to poor satellite/aerial imagery and/or resolution in some areas, and due to a lack of OSM editors to help improve the data. If you are interested in improving this dataset, you can do so by further digitizing the available imagery with the in-browser OSM ID Editor http://ideditor.com/ using the guidance available on the OSM Wiki https://wiki.openstreetmap.org/wiki/Main_Page OSM is a collaborative project to create a free editable map of the world. Map data is collected from scratch by volunteers using GPS, local knowledge and other free sources of information and then entered in the OSM database. The resulting map can be viewed and downloaded from the OSM server: http://www.OpenStreetMap.org. Every user is encouraged to contribute back to the OSM database. OpenStreetMap® is open data, licensed under the Open Data Commons Open Database License (ODbL) by the OpenStreetMap Foundation (OSMF).

Transmission Lines is a polyline dataset representing the power lines that are used to transmit electric power across NZ, usually from a power generating station to main substations that make up the National Grid. They are comprised of overhead and underground conducting lines of either copper or aluminium. In NZ these High Voltage (HV) transmission lines operate at kiloVoltages (kV) of 33 , 66, 110, 220 AC and 350 DC. (Transmission Line is not a topological network.) (Spans are a sub-set of the Transmission Lines data set. Spans record the structure from / to and the length between the structures). The Transmission Lines dataset is updated ad-hocly.

This layer shows electric transmission lines in Montgomery County, Pennsylvania

This data layer is an element of the Oregon GIS Framework. Electric transmission lines as imported from DLG and traced from orthoimagery and lidar surface models. Some distribution lines could be included. NOTE These data are no longer being maintained on a regular basis. Dataset was last updated in 2020.

This feature class/shapefile represents electric power transmission lines. Transmission Lines are the system of structures, wires, insulators and associated hardware that carry electric energy from one point to another in an electric power system. Lines are operated at relatively high voltages varying from 69 kV up to 765 kV, and are capable of transmitting large quantities of electricity over long distances. Underground transmission lines are included where sources were available. These data are for the Homeland Infrastructure Foundation Level Database (HIFLD) (https://gii.dhs.gov/HIFLD) as well as the Energy modelling and simulation community.Link to metadata: https://www.arcgis.com/sharing/rest/content/items/70512b03fe994c6393107cc9946e5c22/info/metadata/metadata.xml?format=default&output=htmlNote: This layer is a feature service, which means it can be used for visualization and analysis throughout the ArcGIS Platform. This layer is not editable.

Data for medium and high voltage transmission lines in Zambia. The data were compiled for the AICD study led by the World Bank. A variety of sources were consulted, including regional power pool documents and maps from World Bank project documents.

Electrical transmission facilities in Utah

Data collected and prepared for a project of the World Bank Group Modernization and Upgrade of Transmission Substations project in Uzbekistan. This data is based on a digitized PDF map, and so is intended as a schematic of rough locations of the power network. It is not suitable for applications requiring high accuracy. The PDF map can be viewed on the last page of report attached. To learn more, please visit http://projects.worldbank.org/P156584/?lang=en&tab=overview

The CEC Transmission Lines geospatial data layer contains electric power lines of transmission and some distribution or sub-transmission voltages covering California. Transmission lines can carry alternating current or direct current with voltages typically ranging from 110 kV to 765 kV. Transmission lines can be overhead and underground; underground transmission lines are more often found in urban areas. Sub-transmission lines generally carry voltages ranging from 33 kV to 100kV. These sub-transmission lines transmit power from higher voltage lines or other bulk power sources to local distribution network substations. An overhead power line can be single or double circuit. A single-circuit transmission line carries conductors for only one circuit. For a three-phase system, this implies that each tower supports three conductors. A double-circuit transmission line has two circuits. For three-phase systems, each tower supports and insulates six conductors. Single phase AC-power lines as used for traction current have four conductors for two circuits. Usually both circuits operate at the same voltage. In HVDC systems typically two conductors are carried per line, but in rare cases only one pole of the system is carried on a set of towers. The detailed descriptions on the structure type, material and circuit can be found at here. If you cannot access to the PDF, you may request us to send you a copy of the PDF.The transmission line, substation and power plant mapping database were started in 1990 by the CEC GIS staffs. The final project was completed in October 2010. The enterprise GIS system on CEC's critical infrastructure database was leaded by GIS Unit in November 2014 and was implemented in May 2016. The data was derived from utility companies and USGS topographic map. Some of the data was rectified from GE and Platts transmission line geospatial data. The sources for the transmission line digitizing are including sub-meter resolution of Digital Globe, Bing, Google, ESRI and NAIP aerial imageries, with scale at least 1:5,000. Occasionally, USGS Topographic map, Google Street View and Bing Bird's Eye are used to verify the precise location of a facility. The data was digitized from pole to pole for greater than or equal to 200 kV transmission lines. For transmission lines less than 200kV, the data was digitized on the pole gaps of approximately 1:5,000 or greater. All the data was digitized based on ground level of where a pole was planted.The transmission line was not digitized with one line segment from substation to substation. GIS Unit will merge the multipart lines into one segment in the future, after consulting with the Strategic Transmission Planning and Corridor Designation Office in identifying electricity flow between substation to substation or power plant to substation. Not all transmission line spatial data ended or started with a substation or power plant point spatial data. However, GIS Unit is current developing power plant and substation boundary spatial data which will enclose most of the transmission lines at both ends.

Data collected and prepared from the Kazakhstan’s National Transmission Grid map, for a WBG published report Stuck in transition: reform experiences and challenges ahead in the Kazakhstan power sector. Includes transmission lines, substations, as well as power stations. Includes existing as well as planned projects. To learn more, please visit http://www.worldbank.org/en/country/kazakhstan/publication/kazakhstan-po... Citation: Aldayarov, Mirlan; Dobozi, Istvan; Nikolakakis, Thomas. 2017. Stuck in transition : reform experiences and challenges ahead in the Kazakhstan power sector. Directions in Development. Energy and Mining. Washington, D.C. : World Bank Group. http://documents.worldbank.org/curated/en/104181488537871278/Stuck-in-tr... This data is based on a digitized PDF map, and so is intended as a schematic of rough locations of the power network. It is not suitable for applications requiring high accuracy.

This polygon service represents easements acquired by Duke Energy and Piedmont Natural Gas, either directly or from legacy companies, for purposes of energy transmission throughout North Carolina. The layer is updated monthly. If you have technical questions about this mapping service or need to report mapping errors, please contact us at LandServicesGIS@duke-energy.comThis service is provided for general informational purposes only. Duke Energy does not provide detailed easement information, property research, or legal advice regarding individual properties through this service.

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 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.

Data for medium and high voltage transmission lines in Congo, Dem. Rep.. The data were compiled for the AICD study led by the World Bank. A variety of sources were consulted, including regional power pool documents and maps from World Bank project documents.