When paddling along the Swedish coast, you pass some nuclear power plants. For some, it is an advantage not to paddle through the area where the cooling water is discharged, as a seemingly still water can suddenly become difficult to pass.
At Forsmark, many have over the years passed under a bridge to then paddle protected inside the area where the cooling water is discharged. This passage is not permitted because it is a protected object where access bans and imaging bans prevail (Protection Act 2010: 305 and the County Administrative Board of Uppsala County decision 451-8521-20).
Instead, you paddle past Grisselgrund and continue NNV past Tallhällen before choosing a more western course. You will then pass the area where the cooling water from the power plant flows out. The picture below shows the boundary of the protected area, which you must not cross.