File:DOE-national-transmission-needs-draft-interregional-transfer-capacity-value-map.jpg

Summary
Map of the 2021 Average $/MWh Value of interregional Price Differences; united states electrical transmission needs. Caption: "The highest value of new transmission is acros sthe three electrical interconnections and during extreme weather events."

From the Draft 2023 national Transmission Needs Study

Source: US Department of Energy Grid Deployment Office; https://www.energy.gov/sites/default/files/2023-05/Draft-2023-National-Transmission-Needs-Study-Fact-Sheet_April-2023.pdf