You think it's too much or too little? Sun availability didn't matter much in Spain until recently, as the country finally got rid of the "sun tax" that limited the development of wide-spread solar panel usage. Essentially, even if you used solar panels, you'd be taxed on every kWh produced, even from your own solar panels. Luckily, they got rid of it, so probably the development will ramp up a bit from now on.