As a trade war grew this week, Ontario's leader threatened a surcharge on Canadian electricity sold in some U.S. states. The episode highlighted the U.S. reliance on imported Canadian power.
Russian strikes continue to destroy Ukraine's power grid, prompting nationwide power cuts while temperatures drop. Workers at a damaged plant try to restore its operation before the winter freeze.
The blackout, on Wednesday, affected the entire nation, leaving millions without electricity and forcing authorities to suspend classes and work activities indefinitely.
With some parts of the country already facing heat waves, the organization in charge of setting reliability standards for the American electric grid is warning that a scorching summer could lead to a shortage of power generation in some regions.
