We don't have over production like you since we are on a grid. I wish we made as much as we used but the reality is that our system which was connected last March was estimated to give us 90% of what we use. And Massachusetts has net metering so even when I over produce (spring and summer) I get it back later in the year. As soon as we have been up for a year I'll have to figure out how much we really used.
I'll be interested in seeing that. :)
Just goes to show that you do not need to be in AZ or CO to have solar work. :)