My gut tells me it's definitely an economic factor. I think it's because the netherlands has towns that are close together, so burying 1 km of electrical cable could potentially serve more people. In texas, possibly, a km of electrical cable will go from the road to someone's house
It's in the numbers too. The netherlands, as a whole, has a population density of 424/km2. Texas has about 1/10th that, at 42.9/km2.
Specifically, I think the abilty to make hydrogren from renewable resources at large-scale will change everything. Hydrogen fuel cells are more space efficient, and require less toxic manufacturing, when compared to current renewable energy generation and storage methods. If hydrogen is seen as cheaper or more green than other power sources, it will change the market completely.
Hydrogen generation is also an active research area, and just this year they've have some promising results for renewable hydrogen.