At the end of October last year, Svenska kraftnät introduced a new system for electricity transmission (flow-based capacity calculation). Since then, transmission has increased between all electricity areas, Svenska kraftnät states in a press release.
In northern Sweden, the flow between electricity areas 1 and 2 has increased by 51 percent (460 MW), if we look at the average flow from November 2024 to September 2025 compared to the same period before the introduction. Further south, between electricity areas 2 and 3, the flow has increased by 25 percent (1,140 MW). The smallest increase is seen in southern Sweden between electricity areas 3 and 4, where the flow has increased by 8 percent (260 MW).
However, increased flows have not been enough to even out prices across the country.
"Because the electricity surplus in the north has been so large in the past year, the increased transmission capacity has not been sufficient to even out prices," says Mårten Bergman, section manager for wholesale markets at Svenska kraftnät.
In southern Sweden, prices have been pushed up due to low availability of nuclear power, according to the authority. Low water levels in the reservoirs in southern Norway for the latter part of the period have also pushed up the price.
