Grid regulation

Load dispatching / redispatching 

Load dispatching refers to assigning loads in accordance with a predetermined generation schedule with the aim of matching the generation of power with the load demand. Load dispatching is implemented in order to maximize the profitability and operational efficiency of a power plant or power plant fleet. All operators of power plants over a certain size are required to report their generation schedules to the transmission system operator, indicating the quantities of electricity to be produced the next day.
Redispatching is a last-minute measure activated by a transmission system operator to alter generation and/or load patterns in order to change physical flows in the transmission system and thus to prevent grid congestion and maintain grid stability. Redispatching is one of the remedial actions applied by TSOs as part of congestion management. A plant upstream of the congestion point in question is instructed to feed less power into the grid, while another power plant downstream from the congestion point is instructed to supply more energy. This shifts the local distribution of electricity production and relieves the congestion.
To minimise these short-term interventions in the actual power plant generation schedules, Europe-wide, coordinated load flow calculations are made on the preceding day as soon as the market results (and the resulting dispatchable generation of the plant) are available in order to reliably identify congestion as precisely as possible and initiate redispatching operations.