That's just solar panels/collectors with less extra steps! :D

But I'm all for this idea, basically adaptive sunlight based heating. It also works if the house is more of a greenhouse, like if you have floor to ceiling or ceiling windows with some sort of shades to regulate the amount of light. It's really convenient & intuitive + can be automated with simple controllers (and like Home Assistant).

Love the energy of this girl & that she made this vid.