Trends in security of electricity supply in Norway
Challenge and objective
The security of electricity supply is very high in Norway today but is being challenged due to more extreme weather, cyber attacks and electrification.
The objective is to provide an overview of the status for the energy availability, power capacity, and for the reliability of supply based on statistics for the last 5 years (2019-2023).
Work performed
Analyses are performed based on fault statistics from Fosweb, for MV distribution (1-22 kV), HV distribution (33-132 kV) and transmission (220-420 kV) to reveal trends over the last five years compared with the last ten years (2014-2023).
In addition, analyses made by NVE and Statnett of the energy and power balance are summarized.
Significant results
The reliability of supply is very high with an exception for 2023 due to a single failure (fire in a cable ditch).
MV distribution counts for the major portion of the consequences in terms of energy not supplied and cost.
Norway’s power balance is declining towards 2035.
The number of unwanted events is increasing, in particular related to information security.
Impact for distribution system innovation
Knowledge about the development in the security of electricity supply is of high importance for the energy transition and for making the right decisions.
