> The Kardashev scale (Russian: шкала Кардашёва, romanized: shkala Kardashyova) is a method of measuring a civilization's level of technological advancement based on the amount of energy it is capable of harnessing and using.

> Under this scale, the sum of human civilization does not reach Type I status, though it continues to approach it.

My guess is: the cost of the minisplits, pretty certain if you had them and turned them all on, you could still draw that much power from the grid.

And probably you are underestimating the cost of nuclear anyway.