I'm over paneled by what I think is a pretty standard 1.2 ratio with 13.2KW of panels feeding a Solaredge 11.4 KW inverter. The current Coronavirus emergency has screwed up my usage for the year, so I probably won't be able to add more panels despite needing more because we now have a second Tesla. To make things worse I'm the second to last house on the utility line so I am regularly below the spec voltage resulting in the inverter only pushing out 11.2KW most of the time.
My thought is to see if I can somewhat increase production by replacing the single inverter with 2 say 7KW inverters. My question is how do I calculate how much production I am losing? I know I clip 9 months out of the year with my current setup, but obviously this varies by day and sky conditions. But even for a single day like today (see graph) where I clipped for just over three hours, how do I calculate the loss as accurately as possible? I realize it may not be a lot but it may be significant enough to make a difference for me.
My thought is to see if I can somewhat increase production by replacing the single inverter with 2 say 7KW inverters. My question is how do I calculate how much production I am losing? I know I clip 9 months out of the year with my current setup, but obviously this varies by day and sky conditions. But even for a single day like today (see graph) where I clipped for just over three hours, how do I calculate the loss as accurately as possible? I realize it may not be a lot but it may be significant enough to make a difference for me.