OKG's three reactors
OKG owns three boiling water reactors (BWR), Oskarhamns 1, 2 and 3, which are often referred to as O1, O2 and O3. Today, it is only at O3 that we produce electricity, since our owners in 2015 made the decision to close O1 and O2 prematurely. The two plants are currently under decomissioning!
With a gross output of 1,450 MW, O3 is one of the world's largest boiling water reactors and accounts for an annual amount of energy equivalent to half a million villas annual consumption.
The large-scale dismantling is now going on at O2, which will last until about 2028. When O2 and the two reactors in Barsebäck were in operation, they used to call them the triplets, since they were largely identical in their design.
O1 is in many ways a pioneering facility and constitutes an era in Swedish engineering. It is the first commercial reactor in Sweden, the first reactor in the world where personnel performed work in a reactor tank that had been in operation and the first to undergo a major modernization project.
Outage - why?
In order for us to be able to produce electricity in a safe way, we must of course maintain our systems. It happens annually during our so-called outages!