HIFLD OPEN Independent Systems Operators

Principal Investigator(s):  View help for Principal Investigator(s) Federal Energy Regulatory Commission; United States Department of Homeland Security

Version:  View help for Version V1

Name File Type Size Last Modified
independent-systems-operators-geojson.zip application/zip 7.5 MB 10/28/2025 10:31:AM
independent-systems-operators-geopackage.zip application/zip 8.6 MB 10/28/2025 09:40:AM
independent-systems-operators-shapefile.zip application/zip 8.2 MB 10/28/2025 09:40:AM
metadata.xml application/xml 11.6 KB 10/28/2025 09:40:AM

Project Citation: 

Federal Energy Regulatory Commission, and United States Department of Homeland Security. HIFLD OPEN Independent Systems Operators. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2025-10-28. https://doi.org/10.3886/E239294V1

Project Description

Project Title:  View help for Project Title HIFLD OPEN Independent Systems Operators
Summary:  View help for Summary This feature class/shapefile represents electric power Independent System Operators. Independent System Operators were set up by the Federal Energy Regulatory Commission (FERC) to provide non-discriminatory access to power and to more adequately administer the transmission grid on a regional basis throughout North America. The following updates have been made since the previous release: updated attribution using best available sources.

This feature class/shapefile is for the Homeland Infrastructure Foundation Level Database (HIFLD) https://gii.dhs.gov/HIFLD as well as the Energy modelling and simulation community.Data source: Oak Ridge National Laboratory.Data and details are hosted by HIFLD as received from the data provider. For questions /feedback, please email [email protected] 

Oak Ridge National Laboratory (ORNL), Los Alamos National Laboratory (LANL), Idaho National Laboratory (INL), National Geospatial-Intelligence Agency (NGA) Homeland Security Infrastructure Program (HSIP) Team
Original Distribution URL:  View help for Original Distribution URL https://hifld-geoplatform.hub.arcgis.com/

Scope of Project

Subject Terms:  View help for Subject Terms Homeland Security; Homeland Defense; Emergency Response; Independent System Operators; Regional Transmission Organization; HIFLD Open; GIS
Geographic Coverage:  View help for Geographic Coverage United States
Time Period(s):  View help for Time Period(s) 12/15/2022 – 12/15/2022
Data Type(s):  View help for Data Type(s) geographic information system (GIS) data
Collection Notes:  View help for Collection Notes Archived from the HIFLD Open GIS data repository, which was deactivated on August 26, 2025.


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Published Versions

V1 [2025-10-28]

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DDI 2.5

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