Maybe this is obvious, but will a Powerwall power the house while it has a charge, and then automatically switch out to allow the house to be powered by the power company otherwise? Then switch back in when it has a charge again, etc.? I'm asking because I have solar panels, but my local power company charges me more for my usage than it pays for my generation. Thus, I have two meters, not a net meter. So, it's advantageous for me to cut down my power company usage but still keep the power company connection, as going off-grid is not feasible.