This seems weird to me. Would that be on the roofs or are you forgetting to count for all that land? But I am European and land is way more valuable here, so that might be the case, I don't know - perhaps you do?
There is a lot of worthless land where utility solar can be installed in the US, not to mention folks who want it on their roof (rooftop solar is cost competitive in most states over 25 years).
Europe has enough wind potential to power the world [1].
"Taking into consideration socio-technical constraints, which restricts 54% of the combined land area in Europe, the study reveals a nameplate capacity of 52.5 TW of untapped onshore wind power potential in Europe - equivalent to 1 MW per 16 European citizens – a supply that would be sufficient to cover the global all-sector energy demand from now through to 2050."
What about the opposition because of worsened living standard of people around and because of the environmental impact, also hazardous maintenance etc? There is a wind farm being blocked in Germany over these concerns now. Same applies for solar and water (river/nature based) power plants in Europe.
Europe has enough wind potential to power the world [1].
"Taking into consideration socio-technical constraints, which restricts 54% of the combined land area in Europe, the study reveals a nameplate capacity of 52.5 TW of untapped onshore wind power potential in Europe - equivalent to 1 MW per 16 European citizens – a supply that would be sufficient to cover the global all-sector energy demand from now through to 2050."
[1] https://www.sciencedirect.com/science/article/pii/S030142151...