I recently learned in my astronomy class that the sun produces more energy every second than the human race has since the industrial revolution.
So that sure would explain why in these tough times where many electricity creating natural resources are dwindling that humans are turning to the sun to get their power.
But even though the sun is creating so much power we have a hard time harvesting enough for our own use, why is that? There are a number of reasons, most of which have to do with a lack of ability.
To start at the source you must understand that even though the sun emits so much energy that is in every direction. So we are just in the path of some of the energy.
The next blockade is that the earth has a magnetic field. This is a good thing because it protects us from the suns blasts of energy that can literally rip off our atmosphere. Which is what has been theorized to have happened to Mars.
So our magnetic field protects us from the sun immense amount of energy, which means some of the energy is deferred.
Now we are to where we make our attempt at capturing the power of the sun, planet earth.
The most popular method for harnessing electricity from the sun, I say most popular because I do not know if there are other types, are solar panels.
There are different types of solar panels but the most common ones on the market are photo voltaic, or PV panels. Now science is advancing in this field on a daily basis because of the new rise in demand, but still these are extremely inefficient, only capturing less than 40% of the actual solar power reaching the panel.
What that means for solar installations is that they have to be put in the most efficient locations possible, turns out that along the US Mexico border that is in fact one of the best locations for solar radiance.
To the right is an image of the solar radiance of Mexico, as you can see the red is the most solar radiance, which means that in the red would be the best location to capture solar power.
Below is a image that measures the same solar radiance but in the United States. 
As you can see right on the border with Mexico is one of the areas with the most solar radiance.
Essentially currently the capture of solar power for energy is extremely inefficient so the location is extremely vital so that more energy can be captured, the US Mexico border area is ideal for solar installations.
