Management of electricity shortage
A balance between electricity production and consumption is continiuously maintained in the electricity system. Electricity shortage is called a situation where electricity production and import can not cover consumption and export.
Fingrid uses a three-step procedure when balance between electricity consumption and production is tightening:
1. Possibility of electricity shortage
There is a possibility of electricity shortage when, according to forecasts, Fingrid will during the coming hours not be able maintain a sufficient amount of fast disturbance reserve. This might be due to a situation where the Finnish production and imports are not sufficient to cover the consumption and exports. This forces Fingrid to utilize the fast disturbance reserve (reserve power plants) to manage the imbalance of production and consumption. It might also be due to a disturbance in the power system, which forces Fingrid to use the fast disturbance capacity for several hours.
2. Serious risk of electricity shortage
A serious risk for electricity shortage exists when the situation described in phase 1 is at hand in real time.
3. Electricity shortage
An electricity shortage is deemed to have occurred when electricity production (including the fast disturbance reserve) and imports are not sufficient to cover the consumption and exports and Fingrid has to restrict consumption to secure the function of power system. Fingrid will contact the local network operators to take necessary action to restrict loads according to the beforehand prepared plans.