Transmission Voltage Lines of 500kV

This map shows transmission lines across the U.S. with voltages of 500 kV. All transmission lines are shown as faint gray lines, with the 500 kV lines bolded. States without a color do not 500 KV transmission lines within their border, with the state color corresponding to the total length of 500 kV transmission within that state. Individual state lengths per state are plotted in the bar chart below. 

U.S. map with states colored to indicate transmission voltages of 500 kV by state
bar chart graph displaying transmission lengths for 500 kV voltages by U.S. state