Our inverter lets you set it so that it doesn't do any grid export, and otherwise sits between the grid and the normal main breaker panel.
If you do this, I'd highly recommend that you put a transfer switch in place that lets you connect the grid back to the breaker panel with the flip of a lever, and cut the inverter out of the loop. That way, if the inverter ever goes down for whatever reason, you can cut it out and do maintenance on it without any "why is the power still not on".
If you do this, I'd highly recommend that you put a transfer switch in place that lets you connect the grid back to the breaker panel with the flip of a lever, and cut the inverter out of the loop. That way, if the inverter ever goes down for whatever reason, you can cut it out and do maintenance on it without any "why is the power still not on".