To do exactly what they’re doing in Germany would be illegal, or perhaps merely would make your utility very mad. It’s something like an 800w inverter that plug

To do exactly what they’re doing in Germany would be illegal, or perhaps merely would make your utility very mad. It’s something like an 800w inverter that plugs into a wall socket. One issue for the US is that you don’t have access to both hots on one plug in a typical receptacle. Not a dealbreaker but one of many reasons you shouldn't import a German one and try and modify it for US use.