Ah, right I was picturing an oversized car battery that you can lug around. Extension cord then? Not sure but this seems surmountable without having to rewire the house and get a permit or licensed unit for feeding the grid
The size the article is talking about are usually around 100 pounds or ~50kg at least. My solution is the much smaller Anker Solix C1000 and it's outboard battery extension. It can output up to 1800W sustained with a 2.4 KW peak and the two units together have about 2100 Wh of capacity. They're small enough to move around by hand when disconnected but can't do the kind of peak shifting the OP article was talking about so they're purely backup or car camping power. I used them to power my WFH setup while my electrical service was being upgraded a while ago though and it worked well enough.
The size the article is talking about are usually around 100 pounds or ~50kg at least. My solution is the much smaller Anker Solix C1000 and it's outboard battery extension. It can output up to 1800W sustained with a 2.4 KW peak and the two units together have about 2100 Wh of capacity. They're small enough to move around by hand when disconnected but can't do the kind of peak shifting the OP article was talking about so they're purely backup or car camping power. I used them to power my WFH setup while my electrical service was being upgraded a while ago though and it worked well enough.