Photovoltaic power plants.
Most of the solar pannels installed on the roofs of the houses and buildings are not photovoltaic; they are thermal pannels and they are used to heat water. They are relatively reasonable.
Photovoltaic solar pannels are expensive and their efficiency is not very high. This is why their installation in individual homes are currently limited.
Photovoltaic solar plant.
The contribution of the photovoltaic solar energy to the total generation of electricity in Spain is currently very little.
Chart extracted from: MINISTRY OF INDUSTRY, TOURISM AND TRADE: The energy in Spain 2010.
Electric energy production in Spain: structure.
From this chart, calculate what percent of the total electric energy in Spain is produced by fossil fuels (coal, natural gas, fuel ).
What percent of electricity is produced by nuclear power plants?
What percent of electricity is produced by renewable energies (wind, hydroelectric and solar)?
With all the data obtained, create a cyclogram.