A solar panel installation on your roof is not normally an aesthetic highlight. The solar panel installation is typically a collection of large bulky square or rectangular panels collected on top of the existing roofing material.
The Nu-lok roofing system is designed to bring modern installation methods to traditional slate roofing. They have recently introduced a PV solar panel system that blends seamlessly into their roofing, without any of the bulky panels.
The installation looks great and not like some sort of bolted on after thought.