Map v2
Source: OpenStreetMap 2022, CER IPL Database, EIA U.S. Energy Atlas
Description: This map shows the high voltage transmission power lines in Canada that are over 100 kilovolts (kV) and high voltage transmission lines in the U.S. that are over 200 kV. Transmission lines link the following provinces to international markets: B.C. to the U.S. Pacific Northwest grid; Manitoba to the U.S. midcontinent grid; Ontario to the U.S. midcontinent and U.S. eastern grids; Quebec to the U.S. eastern grid; and New Brunswick to the U.S. New England grid. There are also power lines between Alberta to Montana and Saskatchewan to North Dakota.
The map also shows the 23 high voltage and extra-high voltage international power lines that are 230 kV and above at the Canada/U.S. border. International power lines, as regulated by the CER, are shown as a diamond shape on the map because they are relatively short in length. There is a list of 23 international power lines on the right side of the figure that spotlights where each international power line is on the map as many of the diamonds overlap each other. Note the map does not show all 86 international power lines. Lower voltage lines below 230 kV are not shown because of the overlap.
The following list summarizes the international power lines shown on the map by province, and provides the voltages of the lines:
British Columbia: four international power lines shown in total. Two extra high voltage international power lines, each 500 kV; and two high voltage international power lines, each 230 kV.
Alberta: one high voltage international power line shown, 230 kV.
Saskatchewan: one high voltage international power line shown, 230 kV.
Manitoba: five international power lines shown in total. Two extra high voltage international power lines, each 500 kV; and three high voltage international power lines, each 230 kV.
Ontario: eight international power lines shown in total. Two extra high voltage international power lines, each 345 kV; and six high voltage international power lines, each 230 kV.
Quebec: Two extra high voltage international power lines shown in total—one 765 kV line and one 450 kV line.
New Brunswick: two extra high voltage international power lines shown, each 345 kV.
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