moza, That's right what you said. Many European countries are well advanced in utilizing renewables. Back home in India too, I find roof top solar water heaters in many houses. But, in Masdar, they are trying to combine all existing green energy technologies together in a 6 km sq. area.This will be probably a forerunner for other such cities made around the world in future. True, its all because Abu Dhabi can afford the initial cost of such construction.

On the other hand, countries like UK and Germany have plenty of roof tops standalone systems..either photovoltaic or reflector heater type.