Editing Electric power transmission (section)

=== Failure protection ===
Under excess load conditions, the system can be designed to fail incrementally rather than all at once. [[Brownout (electricity)|Brownouts]] occur when power supplied drops below the demand. [[Power outage|Blackouts]] occur when the grid fails completely.

[[Rolling blackout]]s (also called load shedding) are intentionally engineered electrical power outages, used to distribute insufficient power to various loads in turn.