Brownouts typically last from a few minutes to a few hours. They get their name from the color they turn your lights (a dimmed brown instead of brilliant light).

How long will brown outs last?

These intentional brownouts may last for anywhere from a few minutes to several hours, at which point electrical demand will presumably decrease and allow the utility to restore full power levels.

How do you fix brownouts?

The best way to shorten the length of a brownout is to reduce your personal consumption of power. Intentional brownouts happen because the demand for power is too high, so the best way to stop the brownout is to reduce power consumption, therefore reducing the demand for power.