Rolling blackouts, or rotating outages, are systematic, temporary power outages that help bring balance to the supply and demand of electricity in the market. Usually, the government agency that oversees the power grid in your state will call for rolling blackouts and your electric utility will administer temporary outages to one area at a time to limit the duration of the outages for each area. Rolling blackouts are typically the last step in a series of emergency procedures after a power supply shortage is detected in the market. The utilities normally get little to no notice about the need for these outages.
If the electricity supply margin is low, meaning the supply of electricity is too low compared to the demand, the demand could become higher than the supply and cause a lengthy, widespread blackout. These small, temporary outages help prevent everyone in the area from experiencing an even longer blackout.
The duration of a rolling blackout will depend on the severity of the event. Your electric utility will usually attempt to limit the duration of outages in each area. The rolling blackout will conclude when the emergency is ended.
Most homes in the affected service area will experience a blackout. Some customers could experience multiple blackouts while others could experience no blackouts at all, depending on where they are located.
Your electric utility will determine which circuits in their service areas will receive blackouts. Some areas, such as those with medical centers, hospitals or downtown areas may not be affected by rolling blackouts.
Critical care customers may also be subjected to rolling blackouts, so customers who rely on electricity for life-sustaining equipment should always have a backup plan in place in case of rolling blackouts or other weather events that could cause outages outside of the utility’s control.
When extreme weather leads to an increase in electricity demand, the best thing you can do to help is to lower your own electricity demand by lowering your usage. Use these tips to reduce your energy usage in extreme weather:
Click here for more energy efficiency tips.