Description

Get mapping data related to the Northwest Greater Toronto Area Transmission Corridor Identification Study. In June 2019, the Ministry of Energy, Northern Development and Mines along with Ontario’s electricity system planner, the Independent Electricity System Operator, launched the Northwest GTA Transmission Corridor Identification Study to identify an appropriate corridor of land for use by future power lines if and when the need arises.

Resources

Name	Format	Description	Link
Original metadata (https://data.ontario.ca)	HTML		https://data.ontario.ca/dataset/5ba2da6f-5636-4e59-b65a-799904ba4a47
2020: Narrowed Area of Interest	KML		https://data.ontario.ca/dataset/5ba2da6f-5636-4e59-b65a-799904ba4a47/resource/05f22451-657d-444e-b768-dfd80d09fd06/download/2020_narrowed_area_of_interest.kml
May 2025: Narrowed area of interest	KML		https://data.ontario.ca/dataset/5ba2da6f-5636-4e59-b65a-799904ba4a47/resource/324f3552-1304-4877-ab2b-e436edf83b0d/download/may_2025_nai.kml
2024: Proposed Narrowed Area of Interest	KML		https://data.ontario.ca/dataset/5ba2da6f-5636-4e59-b65a-799904ba4a47/resource/55d0e9f3-784a-44d1-a897-22e3a976ec16/download/2024proposednarrowedareaofinterest.kml
2019: Preliminary Transmission Corridor Study Area	KML		https://data.ontario.ca/dataset/5ba2da6f-5636-4e59-b65a-799904ba4a47/resource/909d01a5-eddf-42d6-b716-a4665942f2a7/download/current_transmission_corridor_study_area.kml
April 2026: Narrowed Area of Interest	KML		https://data.ontario.ca/dataset/5ba2da6f-5636-4e59-b65a-799904ba4a47/resource/aa859bb4-5c44-47ea-902d-c6b502924f39/download/april_2026_nai.kml
December 2025: Narrowed Area of Interest	KML		https://data.ontario.ca/dataset/5ba2da6f-5636-4e59-b65a-799904ba4a47/resource/b2914fde-b7a9-404e-9987-0a04eaaf550d/download/december2025naikml.kml
2019: Narrowed Area of Interest	KML		https://data.ontario.ca/dataset/5ba2da6f-5636-4e59-b65a-799904ba4a47/resource/bf3daca2-176f-4ef2-98ba-bb29be7cf20e/download/narrowed_area_of_interest.kml
October 2025: Proposed Narrowed Area of Interest	KML		https://data.ontario.ca/dataset/5ba2da6f-5636-4e59-b65a-799904ba4a47/resource/d6c22c19-f5de-4eb2-a5d8-ef6ce7bf1a1b/download/october2025proposednai.kml
April 2026: Narrowed Area of Interest	ESRI Shape		https://data.ontario.ca/dataset/5ba2da6f-5636-4e59-b65a-799904ba4a47/resource/e2bd14c3-b484-4a9c-a138-e457ea837a7d/download/mar13nai.zip
Original metadata (https://data.ontario.ca/fr)	HTML		https://data.ontario.ca/fr/dataset/5ba2da6f-5636-4e59-b65a-799904ba4a47

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