I don't know about Spain in particular, but to me it feels that apartment electricity is massively overpowered (in terms of the effect). In my country the max effect for apartments is 3x16 A = 11 kW. My consumption is 35-40 kWh/month. Unsurprisingly I pay more for the grid connection and the effect, than the actual energy production.

Ok, if I max out my stove completely it could _theoretically_ reach around 10 kW, but only if all four burners AND the oven are turned on at the same time.

It feels like it would be a better idea to install a battery in high-effect appliances to spread out the consumption over the day, than having a guaranteed 11 kW effect available 24/7/365 just in case... (and not everybody needs a stove with four burners, or even reliable power)