MfM, have you actually read my comment and looked at my link? Unlike on Wikipédia, there is a near-complete list of large solar installations >1MW at that site, and I summed up for 2009 by feeding it into a spreadsheet. You went instead to Wikipedia, and assumed that they have complete coverage.

In order for what you say to be true, there would have to be several large installations and tens of thousands of installations there are smaller than the size of an average household panel.

How so? again, 100,000 times 10 kW (which is an average private home rooftop installation and not a single panel, which is around 100W!) is 1 GW, while the Spanish total is almost four times of that, as you can see. Just the >=2MW farms built in 2009 are more than half of the Spanish total.

_{*Lunatic*, n.
One whose delusions are out of fashion.}