> It could definitely be dangerous to feed high voltages back into the powered-down grid. I said as long as the interface is according to spec. There are effec

> It could definitely be dangerous to feed high voltages back into the powered-down grid. I said as long as the interface is according to spec. There are effective mechanisms to prevent this kind of feedback. > shoddy home grid system Then have an electrical engineer review and approve it. Still no reason to forbid it.