What problem is this solving? The limiting factor in solar panel production is cost, Depends on where you are. Ground in the Netherlands is expensive, since it

What problem is this solving? The limiting factor in solar panel production is cost, Depends on where you are. Ground in the Netherlands is expensive, since it has a relatively high population density. Roofs alone do not provide enough surface to provide energy to the whole population. There are many more promising sources of energy for a country with a relatively small amount of sunny days (wind, energy harvested from tides). But this is apparently just a testing strip, so supposedly they just want to test the yield, durability, etc.