Air conditioners require more electricity in hot weather. A protracted heat wave can strain the power grid.
Heat can also affect electricity. Solar power plants create less electricity when it's hot, while hydroelectric power facilities may be less efficient.
Heat damages power wires and transformers. Even with ample power, this can cause power outages.
Heat waves fuel wildfires. Pumps and other firefighting equipment may strain the power grid.
Climate change intensifies heat waves. This is straining the electricity grid and will likely worsen.