The reason is because Norway fucked their energy transfer fees. You used to pay per kWh (which was annoying enough)

But now you also pay for your 99th percentile peak.

In theory this was supposed to incentivize people to spread out their energy use by charging their electric cars overnight and such.

In practice it means a guy like me who lives alone ends up paying the same base fee as a family of four simply because I turn my stove on once a day to make dinner. Or because I take a shower before bed.

Of the 536,43kr fee, 325kr is because my peak usage is 2 - 5 kWh during one hour. Which is a stupidly huge range. The issue is that having a monthly peak usage below 2 kWh is basically impossible if you want to be a regular human and take a shower once a day.

Since every time you take a shower, your water heater probably turns on for an hour, after which you automatically game over and have to pay the same fee as a small family.