While I agree that the important metric to consider is peak output and not average output, I would still guess that in a country like the Netherlands that peak output is nowhere near nameplate capacity.
You can get close to peak output just about anywhere, assuming the panels are angled rather than laying flat. You just can’t get it for very long in most locations.
The new method this past year that appears to be highly beneficial is to use various compass orientations of _vertically_ mounted panels. The solar cells got so cheap that every penny we spend on mounting hardware and rigid paneling now stings, and posts driven vertically into the ground which string cables tight between them are cheaper than triangles, way easier to maintain (especially in places with winter), and trade a lower peak (or even a bimodal peak) for a much wider production curve.
