• USB PD can negotiate pushing up to 240W now at 48V, which is a fair bit.

So if I wanted to wire my home to take advantage of this, supposing I had a house battery on solar, would I have some kind of DC-DC converter from battery to 48V, then cable to outlets with some kind of USB PD adaptor? How much advantage do I get from this, vs using existing 240V outlets + wall wart?