energy4
![](https://erc-assoc.org/sites/default/files/styles/page_width/public/CURENT1-R-grideye_fig2.jpg?itok=M8_0KaBv)
This map shows the differences in phase angle across power grid areas. Greater phase angle differences imply larger static stress across that interface; larger stress could move the grid closer to instability.
Credit:
CURENT
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