PG&E Transmission Lines - Low Voltage

This electric transmission line California statewide dataset was downloaded from PG&E (Pacific Gas & Electric) and was subsetted to include only lines less than or equal to 115 kV (kilovolts). This subset was chosen from the original dataset for use in planning, because it has been determined (via inspections of PG&E database of fires caused by power lines from 2020-2022) that virtually every fire caused by power lines was from a distribution lines less than 115 kV. Most wildfires caused by power lines are from distribution lines less than 44 kV. Thus this database provides information on where those power lines are and can be used to compare with locations that have potential for high severity wildfire. Transmission lines: Carry electricity across the state, Transport bulk electricity at high voltages ranging from 60 kV-500 kV, Are usually supported on tall metal towers, but sometimes on wooden poles, Have different vegetation standards than distribution lines due to the high voltages they carry, Are managed using the utility industry's best-management practice of Wire Zone Border Zone, Require only low-growing vegetation underneath-typically nothing taller than 10 feet at maturity. PG&E's Integration Capacity Analysis (ICA) map is designed to help contractors and developers find information on potential project sites for distributed energy resources (DERS). ICA is a complex modeling study that uses detailed information about the electric distribution system, which includes items such as physical infrastructure, load performance, andmedia/image.png and existing and queued generators.

Data and Resources

Additional Info

Field Value
Last Updated July 11, 2025, 09:38 (UTC)
Created July 11, 2025, 09:38 (UTC)
category /Operational Data Layers/Administrative
collection_name California Landscape Metrics
creation_method PG&E's Integration Capacity Analysis (ICA) map is designed to help contractors and developers find information on potential project sites for distributed energy resources (DERS). ICA is a complex modeling study that uses detailed information about the electric distribution system, which includes items such as physical infrastructure, load performance, andmedia/image.png and existing and queued generators.
data_units Tabular attributes
data_vintage Not specified
element Administrative
encoding utf8
file_name TransmissionLines_upTo_115kV.shp
format shapefile
harvest_object_id 378bebe7-e101-41b1-8b25-88ca52f4d945
harvest_source_id a2637971-af12-457f-ae4a-831d2202a539
harvest_source_title WIFIRE Commons
metric_definition_and_relevance This electric transmission line California statewide dataset was downloaded from PG&E (Pacific Gas & Electric) and was subsetted to include only lines less than or equal to 115 kV (kilovolts). This subset was chosen from the original dataset for use in planning, because it has been determined (via inspections of PG&E database of fires caused by power lines from 2020-2022) that virtually every fire caused by power lines was from a distribution lines less than 115 kV. Most wildfires caused by power lines are from distribution lines less than 44 kV. Thus this database provides information on where those power lines are and can be used to compare with locations that have potential for high severity wildfire. Transmission lines: Carry electricity across the state, Transport bulk electricity at high voltages ranging from 60 kV-500 kV, Are usually supported on tall metal towers, but sometimes on wooden poles, Have different vegetation standards than distribution lines due to the high voltages they carry, Are managed using the utility industry's best-management practice of Wire Zone Border Zone, Require only low-growing vegetation underneath-typically nothing taller than 10 feet at maturity.
source PG&E
spatial {"type": "Polygon", "coordinates": [[[-0.0011159278198423783, 0.0002925110704350842], [-0.0010154022372411264, 0.0002925110704350842], [-0.0010154022372411264, 0.0003774204863453108], [-0.0011159278198423783, 0.0003774204863453108], [-0.0011159278198423783, 0.0002925110704350842]]]}
sub_collection_name Operational Data Layers