Ubiquitous PV
From AdCiv
Ubiquitous PV here refers to the possibility of easily applied, durable and very cheap photovoltaic coatings, (perhaps based on titanium-dioxide), that could end up covering most roofs, pavements and roads. This vast distributed energy gathering area has the possibility of providing a significant percentage of the energy requirement of modern society.
The greater the population concentration in any one area, the greater the energy generating surface would be.