Solar energy (thermal and photo voltaic) Differences between the conditions in North and South Europe?

Solar energy (thermal and photovoltaic) Diferences between the conditions in North and South europe

I need to do some report about the differences between the conditions for North and South Europe to use the solar energy.

All data, like the energy at places, the advantages, everything is welcome.
Send me links, or other things.

Thanks

There are maps to show how much solar energy is available on average per day for the planet. Solar energy return is also dependent on tracking the sun. Tracking can be applied on solar thermal and photovoltaic. Solar thermal is more economical when scaled up in MW. Solar thermal can also provide night time energy using salt ponds for heat storage.