The California Energy Commission (CEC) Electric Substation geospatial data layer has been created to display the locations of substations in California. It contains point features representing transmission substations and some distribution substations in California. These substations are fed by electric transmission lines and are used to step-up and step-down the voltage of electricity being carried by the lines, or simply to connect together various lines and maintain reliability of supply. These substations can be located on the surface within fenced enclosures, within special purpose buildings, on rooftops (in urban environments), or underground. A substation feature is also used to represent a location where one transmission line "taps" into another. When used in association with the CEC Power Plant and CEC Electric Transmission Lines geospatial data layers, viewers can analyze the geographic relationships with the substation across utilities, counties and state.

The data has been gathered from two sources - internal CEC data and the Department of Homeland Security's - Homeland Infrastructure Foundation-Level Data (HIFLD). The CEC data was created from a project spanning many years and was previously updated in 2016. The data was derived from utility companies and USGS topographic map. Some of the data was rectified from GE and Platts substation geospatial data. The sources for the substation point digitizing are including sub-meter resolution of Digital Globe, Bing, Google, ESRI and NAIP aerial imageries, with scale at least 1:10,000. Occasionally, USGS Topographic map, Google Street View and Bing Bird's Eye are used to verify the precise location of a facility.

The substation data, as one of the CEC's California Energy Infrastructure spatial data will be used to:

1. Support the CEC/STEP/Strategic Transmission Planning and Corridor Designation Office in corridor study and transmission line siting;

2. Support the CEC staffs' various analysis by providing general geographic reference information;

3. Enhance communication between and among government agencies on emergency management, resource management, economic development, and environmental study;

4. Provide illustration of critical infrastructure spatial data to the public or other agencies in hard copy format.

BRADD GIS staff digized the substation layer by following transmission lines. It is not intended to be an authoritative source of data as there are likely substations missing from the dataset.Electric Company offices were digitized by BRADD staff using existing address point information.The transmission line feature layer, utilizing data from Homeland Infrastructure Foundation-Level Data, depicts electric power transmission lines in the United States.DescriptionU.S. Electric Power Transmission LinesThis 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 currency: This cached Esri service is checked weekly for updates from its federal source (Electric Power Transmission Lines)Data modification: noneFor more information: Electricity ExplainedFor feedback please contact: ArcGIScomNationalMaps@esri.comThe Homeland Infrastructure Foundation-Level DataPer 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."

*** 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.

U.S. Electric Power Transmission LinesThis 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: noneFor more information: Electricity ExplainedSupport documentation: Transmission LinesFor feedback, please contact: ArcGIScomNationalMaps@esri.comThe Homeland Infrastructure Foundation-Level DataPer 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 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.

This feature layer depicts wind energy infrastructure including industrial-scale wind turbines, electric substations and electric transmission lines in the State of Texas. The data is derived from the U.S. Geological Survey (USGS) and Homeland Infrastructure Foundation Level Data (HIFLD). A collaboration among USGS scientists related to energy development and environmental consequences began in 2008. This group anticipated finding accurate information on wind energy facilities and turbines in the public sphere, like the type of data available for oil and gas wells. However, turbine information was lacking, and it became apparent that scientists, regulatory agencies, nongovernmental organizations, and other decision-makers all needed spatially accurate wind turbine information. Each of the 8,012 turbine locations includes corresponding facility information and turbine technical specifications.Electric substations are facilities and equipment that switch, transform or regulate electric voltage. The electric substation feature class in this service includes taps, which are locations where power on a transmission line is tapped by another transmission line. Electric substations are part of the electric network system helping to move electricity to where it is needed.Electric power transmission lines are the system of structures, wires, insulators and associated hardware that carry electric power from one point to another in an electric power network. Lines are operated at high voltages varying from 69 kV (Kilo Volts) up to 765 kV and can transmit large quantities of electricity over long distances. The underground transmission lines are included where sources were available.Wind Energy InfrastructureData currency: March 2, 2014 (Turbines) and August 08, 2017 (Electric Substations and Transmission Lines)Data sources: Onshore Industrial Wind Turbine Locations and Electric Substations and Electric Power Transmission LinesFor more information, please visit: Data Series 817 and HIFLDFor feedback: ArcGIScomNationalMaps@esri.comThumbnail source image courtesy of: Thomas KohlerOther Federal User Community federally focused content that may interest youDepartment of the InteriorU.S. Geological SurveyDepartment of Homeland SecurityHomeland Infrastructure Foundation Level Data

Border crossings of electric transmission lines. Mapping Resources implemented as part of the North American Cooperation on Energy Information (NACEI) between the Department of Energy of the United States of America, the Department of Natural Resources of Canada, and the Ministry of Energy of the United Mexican States. The participating Agencies and Institutions shall not be held liable for improper or incorrect use of the data described and/or contained herein. These data and related graphics, if available, are not legal documents and are not intended to be used as such. The information contained in these data is dynamic and may change over time and may differ from other official information. The Agencies and Institutions participants give no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. Parent Collection: North American Cooperation on Energy Information, Mapping Data

Note: Sample data provided. ・ 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. The following updates have been made since the previous release: 1,166 features added.

Electric Substations dataset current as of 2004. Electric substation locations provided to us from Kansas City Power and Light and City of Gardner only at this time. AIMS is working on getting other providers in area. Data is limited to CUE (Collaborative Utility Exchange) Participants and subcontracto.

Overview The Capacity Expansion Regional Feasibility (CERF) model is an open-source geospatial python package that provides new power plant locations at a 1km resolution. The model ingests U.S. state or regional-scale electricity system capacity expansion plans, such as those produced by the Global Change Analysis Model (GCAM-USA), and identifies feasible, site-specific locations for individual new power plants (renewable and non-renewable). CERF combines high-resolution geospatial suitability analyses with an economic algorithm that selects individual plant siting locations based on grid interconnection costs and the locational marginal value of new generation. The model incorporates a wide range of dynamic constraints and opportunities, such as protected lands, population density, existing infrastructure, and water availability. This dataset provides CERF power plant siting results for IM3 Phase 2 simulations across eight different scenarios for the Western US through 2055. The scenarios include combinations of two Shared Socioeconomic Pathways (SSP3 and SSP5) with four high-resolution climate projections specific to the United States (see, https://tgw-data.msdlive.org/). These climate projections include "hotter" and "cooler" variants for two Representative Concentration Pathways (RCP4.5 and RCP8.5). The resulting eight simulations are: rcp45cooler_ssp3 rcp45cooler_ssp5 rcp45hotter_ssp3 rcp45hotter_ssp5 rcp85cooler_ssp3 rcp85cooler_ssp5 rcp85hotter_ssp3 rcp85hotter_ssp5 CERF siting results in this dataset correspond to capacity expansion plans in the GCAM-USA IM3 Phase 2 simulation data and are available for each of the above scenarios. Data Details Temporal Range: 2015-2055 in 5-year timesteps. Note that 2015 is the experiment base year and 2020 and beyond represent model simulation years. Spatial Range: Plant locations are provided for the eleven states in the Western US including Arizona, California, Colorado, Idaho, Montana, New Mexico, Nevada, Oregon, Utah, Washington, and Wyoming. Spatial Resolution: 1 km-squared, provided in x and y coordinates Geospatial Projection: Albers Equal Area Conic (ESRI:102003) File Type: csv The dataset contains subdirectories for each of the eight scenarios described in the overview. Each scenario folder contains two subfolders with the following information: 1. Power Plant Data This directory contains a single .csv file of power plant locations for both pre-existing (non-CERF sited plants in operation in 2015) and new (CERF-sited) power plants across the temporal range along with additional CERF model output parameters for CERF-sited plants. Plant with a siting year earlier than 2020 correspond to facilities that are operational leading into the first timestep CERF simulation. For a more detailed description of CERF model output parameters, see the CERF model documentation. Note that the cerf_plant_id parameter is unique within each scenario file but not across scenario files. Parameter Descriptions scenario - Name of scenario cerf_plant_id - Unique siting identifier cerf_sited - If True, indicates that plant was sited by CERF model. If False, indicates pre-existing facility region_name - Name of region (state) tech_id - Technology ID tech_name - Full generation technology name inclusive of cooling type (if applicable) and additional characteristics tech_simple - Simplified generation technology type unit_size_mw - Power plant unit size (MW) xcoord - X coordinate in the default CRS (meters) ycoord - Y coordinate in the default CRS (meters) index - Index position in the flattend 2D array buffer_in_km - Exclusion buffer around site (km) sited_year - Year of siting retirement_year - Year of retirement lmp_zone - Locational marginal price (LMP) zone ID locational_marginal_price_usd_per_mwh - Locational marginal price ($/MWh) generation_mwh_per_year - Generation output (MWh/yr) operating_cost_usd_per_year - Cost of plant operations ($/yr) net_operational_value - Net operational value based on LMP and and operating costs ($/yr) interconnection_cost - Cost of interconnection for transmission & gas pipeline (if applicable) net_locational_cost -- Difference of interconnection cost and operating value ($/yr) capacity_factor_fraction - Capacity factor (fraction) carbon_capture_rate_fraction - Carbon capture rate (fraction) fuel_co2_content_tons_per_btu - Fuel CO2 content (tons/Btu) fuel_price_usd_per_mmbtu - Fuel price ($/MMBtu) fuel_price_esc_rate_fraction - Fuel price escalation rate (fraction) heat_rate_btu_per_kWh - Heat rate (Btu/kWh) lifetime_yrs - Technology lifetime for annuity (years) operational_life_yrs - Operational lifetime for retirement (years) variable_om_usd_per_mwh - Variable operation and maintenance costs of yearly capacity use ($/MWh) variable_om_esc_rate_fraction - Variable operation and maintenance costs escalation rate (fraction) carbon_tax_usd_per_ton - Carbon tax ($/ton) carbon_tax_esc_rate_fraction - Carbon tax escalation rate (fraction) 2. Storage Data This directory contains information on new and pre-existing energy storage facilities operational in each timestep along with various storage operational parameters. The 2015 timestep provides pre-existing energy storage data and corresponds with facilities that are operational leading into the first model simulation timestep. Note that coordinates in the storage files correspond to the interconnection point on the grid (substation location), not individual energy storage locations. Energy storage is added in a cumulative process at each given interconnection point. That is, each individual file provides the total operational storage capacity interconnected to the specified substation for the given timestep, inclusive of previously installed storage at that location and new storage installed in that timestep at that location. Parameters scenario - Name of scenario timestep - Simulation timestep name - Unique storage identifier s_typ - Type of energy storage technology (battery or pumped storage hydro) s_node - Node ID of interconnecting substation xcoord - X coordinate in the default CRS (meters) ycoord - Y coordinate in the default CRS (meters) charge_rate - Maximum charge rate (power capacity) of storage system (MW) discharge_rate - Maximum discharge rate (power capacity) of storage system (MW) duration - Duration of storage system (hours) max_SoC - Allowed maximum state of charge (energy capacity) of storage system (MWh) min_SoC -Allowed minimum state of charge (energy capacity) of storage system (MWh) charge_eff - Efficiency of charge (fraction between 0 and 1) discharge_eff - Efficiency of discharge (fraction between 0 and 1) Acknowledgment IM3 is a multi-institutional effort led by Pacific Northwest National Laboratory and supported by the U.S. Department of Energy's Office of Science as part of research in MultiSector Dynamics, Earth and Environmental Systems Modeling Program.

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 questions or comments, please contact us at LandServicesGIS@duke-energy.com

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DFES – Primary Substation Sites - New 2024 Dataset

This dataset depicts the Primary Substation sites featured in the 'DFES 2024 Primary Data' dataset. This will allow you to spatially map the DFES 2024 data using the 'Group Number' attribute (common to both datasets)

The collection of DFES datasets envisages a range of possible views of the future, which indicate how different influences can change electrical demand and generation on our network.

This dataset is an accompaniment to our 2024 DFES report. It contains detailed datasets and interactive tools which allow our customers to understand what our Distribution Future Electricity Scenarios mean to them.

Please refer to our main DFES report for a full description of our forecasts and scenarios. Our forecasts are not precise predictions of what the future is likely to be, but instead frame the uncertainty within our planning as explained in the main report.

While we use reasonable endeavours to ensure that the data contained within this dataset is accurate, we do not accept any responsibility or liability for the accuracy or the completeness of the content held, or for any loss which may arise from reliance on this dataset and/or its related information.

If you have any query related to this DFES Primary Substation Sites Dataset, please contact us

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This feature layer depicts wind energy infrastructure including industrial-scale wind turbines, electric substations and electric transmission lines in the State of Colorado. The data is derived from the U.S. Geological Survey (USGS) and Homeland Infrastructure Foundation Level Data (HIFLD). A collaboration among USGS scientists related to energy development and environmental consequences began in 2008. This group anticipated finding accurate information on wind energy facilities and turbines in the public sphere, like the type of data available for oil and gas wells. However, turbine information was lacking, and it became apparent that scientists, regulatory agencies, nongovernmental organizations, and other decision-makers all needed spatially accurate wind turbine information. Each of the 1,537 turbine locations includes corresponding facility information and turbine technical specifications. Electric substations are facilities and equipment that switch, transform or regulate electric voltage. The electric substation feature class in this service includes taps, which are locations where power on a transmission line is tapped by another transmission line. Electric substations are part of the electric network system helping to move electricity to where it is needed.Electric power transmission lines are the system of structures, wires, insulators and associated hardware that carry electric power from one point to another in an electric power network. Lines are operated at high voltages varying from 69 kV (Kilo Volts) up to 765 kV and can transmit large quantities of electricity over long distances. The underground transmission lines are included where sources were available.Wind Energy InfrastructureData currency: March 2, 2014 (Turbines) and August 08, 2017 (Electric Substations and Transmission Lines)Data sources: Onshore Industrial Wind Turbine Locations and Electric Substations and Electric Power Transmission LinesFor more information, please visit: Data Series 817 and HIFLDFor feedback: ArcGIScomNationalMaps@esri.comThumbnail source image courtesy of: Thomas KohlerOther Federal User Community federally focused content that may interest youDepartment of the InteriorU.S. Geological SurveyDepartment of Homeland SecurityHomeland Infrastructure Foundation Level Data

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ENWL Substations

Dataset depicting location of Substations on Electricity North West Limited’s network. Each Substation has a unique 6 digit identifier and contains information on Infeed and Outfeed Voltages amongst other attribution

While we use reasonable endeavours to ensure that the data contained within this dataset is accurate, we do not accept any responsibility or liability for the accuracy or the completeness of the content held, or for any loss which may arise from reliance on this dataset and/or its related information.

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Statewide layer of TLSA Certified Transmission Line locations Please reference metadata for contact information.