brownout

When demand for electricity exceeds the available supply, a brownout occurs.

On rising suddenly from her chair she experienced a brownout and had to sit down again quickly.

Fire departments across the country have been forced to rely on rolling brownouts because of the recession.

Remember that you can't send or receive a fax if there is a brownout. ... Due to blackouts (the Philippine term is brownout), especially during the dry season, be prepared with a flashlight and don't forget to save your data in your PC.