Space is not an issue really. Even in a densely populated country like Germany we dedicate around 2.4 million hectares for "energy crops", i.e. mostly ethanol a

Space is not an issue really. Even in a densely populated country like Germany we dedicate around 2.4 million hectares for "energy crops", i.e. mostly ethanol and "bio"diesel. If we replaced just those monocultures with solar panels, we'd have covered the majority of Germany's primary energy needs.