The easy way to create a grid-tie system by day, and off-grid at night.
For what it's worth you can create a fairly simple interactive grid system (Solar panels power the house via the grid by day, and use batteries by night) by using an outback GVFX inverter. Just use the Grid-tie side of the inverter exclusively. And just use the dedicated inverter output for critical loads such as Refrigerators etc. You will have to set the AC1/Grid AAC setting way down, because the inverter tends to try to pour everything it can into the grid which is great if your just trying to spin the meter backwards. But not great at night as this will kill your battery as it has no way to measure your actual grid-side load. Setting the AC1/Grid value down will just let it pour enough into the grid to keep the meter idling and allow you to run through the night. And it's not all that expensive to put in a battery bank if you do it yourself. Just take care of them and if you don't deep cycle them all the time they will last a long time.
For what it's worth you can create a fairly simple interactive grid system (Solar panels power the house via the grid by day, and use batteries by night) by using an outback GVFX inverter. Just use the Grid-tie side of the inverter exclusively. And just use the dedicated inverter output for critical loads such as Refrigerators etc. You will have to set the AC1/Grid AAC setting way down, because the inverter tends to try to pour everything it can into the grid which is great if your just trying to spin the meter backwards. But not great at night as this will kill your battery as it has no way to measure your actual grid-side load. Setting the AC1/Grid value down will just let it pour enough into the grid to keep the meter idling and allow you to run through the night. And it's not all that expensive to put in a battery bank if you do it yourself. Just take care of them and if you don't deep cycle them all the time they will last a long time.
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