So how does this work for apartments? Normally apartments dont bother as the homeowners get almost no benefit (small roof relative to the power usage), and net

So how does this work for apartments? Normally apartments dont bother as the homeowners get almost no benefit (small roof relative to the power usage), and net metering shared solar panels is tricky, way to tricky for a utility to care. So who bears the cost of this? That said might be a huge opportunity for a microgrid company to set up panels, smart meters and batteries in buildings, and then just have a single meter at the perimeter.