Wow that's really great input. I'm going to check this out and write a follow-up! This would allow me to credit the power directly to my fridge bill, as opposed to just using it for lighting and devices!
Do not do this. You could kill a utility worker, and it's against the law for safety reasons.
Edit: Net metering/grid tie guidelines require inverters that will shutdown upon loss of utility power. Also, a disconnect switch must be on the exterior of the building/facility, clearly identified, and on record with the utility.
