To achieve optimum control of the distributed production units, the power system is divided into smaller units defined as cells in terms of control.

The sum of production units in a cell can be considered as one large production unit – a virtual generator unit – where power generation can be adjusted up or down as required. In addition, a cell area can also be isolated from the remaining power system in case of blackout. This means that a blackout otherwise impacting severely on security of supply can be contained to smaller areas.

In practice, the technology will work as online control and monitoring of the total power consumption and total power generation in the grid – down to individual elements in the area such as a wind turbine. The new technology will therefore make the power system more flexible, as well as increase the operational reliability of the power system and create more possibilities in the liberalised power market.