“To match Germany’s electricity demand (or over 15% of EU’s electricity demand) solely from solar photovoltaic panels located in Spain, about 7% of Spain would have to be covered with solar panels (~35.000 km2)”
I agree with the 35 km^2, but if it’s 7% of Spain’s total area, then Spain would be 490 km^2, or a bit smaller than Guam. Somehow I doubt that’s the case.
It’s 35,000 km2.
In Europe they use a period instead of a comma to separate thousands. Commas are used for decimals - just the opposite of our system.