The power situation right now
Power Flow
Power Situation
Statnett's assessment of the power situation is based on statistical data on water supply (inflow) to the reservoirs in the various regions, reservoir filling, expected consumption and import capacity.
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The different levels for power situation
Normal
The power situation is good. The probability that the power situation during the winter would present major problems is estimated to be small, with a probability of rationing of less than five percent. This means that historical precipitation data show problems for very few years, given the normal capacity of the lines into the area. Extraordinary events (such as major and long-term faults) are required before power supply problems can occur. Statnett assesses and uses ordinary instruments in its operations.
Pressed
The probability of rationing is estimated to be below 20 per cent, before the effect of any extraordinary measures is included in the assessment. Yellow level thus means that the flexibility of the power system, and the system's ability to handle low inflows or long-term faults, is limited. Statnett is closely monitoring the situation for vulnerable regions. We assess and use ordinary instruments in operations.
Strained
The probability of rationing is estimated to be between 20 and 50 per cent before the effect of any extraordinary measures is included in the assessment. The impact of these will vary from area to area. The power supply in such a situation is very vulnerable at lower inflows than normal or prolonged faults in the transmission grid or power production. Statnett uses ordinary instruments if the situation does not worsen further, but prepares for the use of extraordinary measures (SAKS measures / measures for use in a Very Strained Power Situation) and may in some instances apply to the Norwegian Water Resources and Energy Directorate for permission to preventively implement SAKS-measures.
Severe
The probability of rationing is estimated to be over 50 per cent before any extraordinary measures are taken. In a very strained power situation, Statnett will apply to the Norwegian Water Resources and Energy Directorate for permission to use extraordinary measures (SAKS measures) that involve the use of energy options.
Rationed
In such a situation, there is not sufficient energy available to meet consumption, and the Norwegian Water Resources and Energy Directorate declares rationing in accordance with the Energy Act § 6-2 (Rationing) and regulations on rationing § 4.
Normal
Pressed
Strained
Severe
Rationed
Power Balance
For the power system to work, there must be a balance between production and consumption of electricity. When in balance, the system is at 50 Hz.
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