Damn that's a tiny picture, sorry about that, but you can see the panels were installed in March of 2017, they had a few months of "profit" this summer and last summer, but overall they are saving a ton on their electric bill. Not sure what the ROI is.
http://www.columbusracing.com/forums/picture.php?albumid=7&pictureid=9203
Things to note:
All electric house
3140 sq ft - added 500sq ft in March of 2017 as well as solar
baseboard heat
2 heat pumps
3 hot water tanks