Empty roofs abound!

I am sitting at the Gautrain Station waiting for a visitor and I cannot help but look around and notice all the flat and empty roofs that are just begging to be filled with solar panels that will make effective roof top pv system. It is a winterish day but the sun is still shining and I can just imagine the silicon in hundreds of solar panels, working away churning out usable, free and sustainable energy.
This is really a ‘no brainer’! Zero Carbon must and will start marketing residential roof- top systems soon.