Glossary
Brownout
In times of high grid load or energy bottlenecks in the European energy market, brownouts can occur - a targeted voltage reduction by the grid operator to ensure grid stability. In contrast to a complete power failure (blackout), the supply is maintained, albeit at a reduced voltage.
9/26/2024
A brownout refers to a targeted, temporary reduction in the grid voltage by the grid operator in order to maintain the stability of the power grid in the event of high loads or a power crisis. Unlike a blackout, in which the power supply is completely interrupted, a brownout maintains the power supply but at a lower voltage.
Typical characteristics of a brownout are
- Reduced voltage: The grid voltage is deliberately lowered, often by 5 to 10 %, to reduce the overall load on the power grid.
- Impairment of electrical devices: Many appliances may continue to function, but at reduced power. However, some sensitive devices, such as computers or electronic control systems, could be disrupted.
- Preventive measure: Brownouts are often used to prevent a complete power failure (blackout) if the grid is overloaded or there is not enough power available.
- Duration: Brownouts are usually only temporary and are ended as soon as the situation in the grid has stabilised.
Brownouts are more common in regions with weak or unstable power grids, but can also occur in developed countries if demand for electricity exceeds supply or if there are unforeseen disruptions to the power supply.
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