The boiling water reactor unit’s increased output means its net electrical power will increase by just over 50 MW to around 950 MW.
It marks the first step in a plan to increase the plant’s net power output by just over 100 MW. The second step will follow in 2023 or later, but will also need SSM’s approval.
The Forsmark nuclear station in Uppland, north of Stockholm, has three plants. The power at Forsmark-2 was increased by just over 100 MW in 2013.
Forsmark-1 has been modernised to ensure long-term operation and the infrastructure has been upgraded.
Björn Linde, chief executive officer of the Forsmark and Ringhals nuclear power stations, said earlier this year a power increase at Forsmark-1 can provide critical additional power, not least in winter when electricity shortages can occur in some areas in really cold weather.
Forsmark is Sweden’s largest electricity producer with production of just over 25 TWh in 2021.
Sweden’s six commercial nuclear plants – three at Forsmark, two at Ringhals and one at Oskarshamn – provide about 30% of total electricity production.
