What does blackstart capability refer to?

Blackstart capability refers to a generator's ability to start and generate electricity from a cold shutdown without relying on external power sources from the grid or interconnection. This capability is crucial for restoring the power system after a blackout or significant disturbance since it allows for the reestablishment of the electrical grid independently.

When a blackout occurs, the entire system loses power, and traditional generators that depend on the grid to provide the initial energy to start cannot operate. In such situations, blackstart capable generators can initiate their startup processes autonomously. They often have specific equipment and operational capabilities that enable them to generate the required power to energize the grid back to operational status.

This blackstart function is essential for a reliable and resilient power generation system, as it serves as the first step in bringing other generators back online, effectively acting as the foundation for restoring electricity supply to customers after outages.