As a rule, if you're tempted to begin any sentence with "they should just..." -- don't.
Electrical signal attenuation increases with the square of the distance, so you'll lose ~95% of the power to heat loss in the wires if you try to power Seattle from solar in Nevada -- not very eco-friendly, you'd agree? Also the extreme heat destroys solar panels. Also, dust. Also the permitting of stuff across state lines is so time-consuming it's effectively illegal.
There are a lot of very good reasons why we haven't covered the desert in solar panels.
Electrical signal attenuation increases with the square of the distance, so you'll lose ~95% of the power to heat loss in the wires if you try to power Seattle from solar in Nevada -- not very eco-friendly, you'd agree? Also the extreme heat destroys solar panels. Also, dust. Also the permitting of stuff across state lines is so time-consuming it's effectively illegal.
There are a lot of very good reasons why we haven't covered the desert in solar panels.