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Independent Systems Operators

2025 - Homeland Infrastructure Foundation Level Data HIFLD


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API
REST: https://mapservices.pasda.psu.edu/server/rest/services/pasda/HIFLD_FEMA_PA/MapServer
WMS: https://mapservices.pasda.psu.edu/server/services/pasda/HIFLD_FEMA_PA/MapServer/WMSServer?request=GetCapabilities&service=WMS
ADDITIONAL RESOURCES
n/a
ABSTRACT
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 hifld@hq.dhs.gov 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.