stackyFACTSOur supposedly robust power grid is highly vulnerable to simply getting sweaty and tired.
Our supposedly robust power grid is highly vulnerable to simply getting sweaty and tired. High-voltage transmission lines carry massive electrical loads that generate internal heat. On a scorching summer day, this heat causes the metal cables to physically expand and sag dangerously close to trees and buildings. If they touch a branch, they short out, which is exactly how massive multi-state blackouts routinely start.
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