Average sq ft for house in US is around 2500sq ft so 2000 sq ft is below median. Ok starter house but not more than that. I understand that houses in Europe are much smaller though due to low incomes and higher utility costs.

I have 2800 sq ft house and use around 30-35 kWh/day in summer. 60kWh/day is high but not outrageously high.

60 kWh/day is definitely not much in climate where temperature can go below -40F/-40C.

21900 KWh in a year is not much according to what source?