Semloji

Lovely one.
 
Dont forget the stem wall to be built to keep the home warm in winter and cool in summer without any power.
also the fruit drying roof trays and power gen chimney in any new builds
Add the bio digester to provide hot water cooking gas and black gold (liquid fertilizer for the garden)
 
you can see a drop off on your graph, must be change to winter sun, or loss on panels settleing in ???
It would be interesting to see change as summer comes in.