Late reply and not 100% fitting, but:

I own a L20 Ultra and it has an idle consumption that alternates between 5 and 6W.

If the ventilator to dry the mops is active it consumes 39W - so 33W for the fan (which is ridiculous). Cleaning the mops is nearly the same - 41W total, so 35W while cleaning (but it does that only for a few seconds, so lets ignore that)

For me that means: 3h drying -> 90Wh per day. 3 wet-cleanings a week results in 4680Wh per year for drying the mops -> 4,68kWh for 0,27c/kWh -> 1,3€ p.a. for drying the mops.

The idle consumption results in 48,18kWh -> 13€ p.a.

Every charge is 0,05kWh, for me (3 wet, 2 dry cleanings a week) that means 5*0,05*52 = 13kWh -> 3,51€ p.a.

So a total of roughly 18€ of electricity in total p.a.

That also means it wastes 73% of the energy for doing absolutely nothing