Pyramid Solar Panels mounted East, South, West, and North on same roof!

This pyramidal rooftop array in Japan makes use of all the available roof space by pointing panels east, south, west and north. According to PVwatts the north-facing panels will generate only about 60% as much power as the south-facing ones, all other things being equal.

http://euanmearns.com/rooftop-pv-panels-point-where-the-roof-points/