Why not just run a separate line using roaming wire to wherever you'd want the juice? I see no reason to tie it back into your regular electricity. That way you can use the cheap inverter plus whatever storage you want and power up select electronic devices. I have a friend who does just that with a home made solar panel on his garage roof. He uses it to power his laptop & lights in his man-cave during the summer. Just be sure to be safe and not overload the wires.