[Awd180]

Originally Posted by RedDevil

Ah ha, so you did not work that out by yourself.
I did.

A typical solar panel can deliver say 100 Watt per square meter.
The globe does have a lot of square meters. If we take just land for practicality that's 148,940,000,000,000 of them, according to Wikipedia.

The panel will only yield power half of the time, and almost never reach its peak. It will be more effective close to the equator anwd in areas with al lot orf fair weather. If their average production is just 10% of their full capacity we're on the safe side. It is likely more than that, but 10% is enough for now.

So the earth could yield 1,489,400,000,000,000 Watt continuously (1.489 pentaWatt)
The total world energy consumption in 2008 according to Wuikipedia was 143.851 pentaWatthour.
So in just 4 days the solar cells would have provided all the energy the earth needs in a full year. Not just electric but all, including oil etc.

It does not cover a small percentage of our needs, I give you that.
It covers 9200% of our needs. Being conservative in panel efficiency and exposure...

Such a pity those panels are so expensive, or else...
Some companies claim it will be possible in the near future to print solar panels just like any ordinary newspaper.
If that ever becomes true the whole ball game is turned over. You can choose any color for your car as long as it is solar panel color Same for your roof plating, same for outer walls, you name it.

Time for bed around here. I'll sleep well tonight.

Land Area (148,429,000 sq km) 29.1%
or 148,429,000,000 sq m not 148429000000 000

But still you get into functionality of a solar at a peak around the equator, why? Alaska has the longest days.

Your figures don't account for error, weather, and rotational speed of the earth, the reports I've read are run from trial performance of solar cells in operation. Solar cells are fixed and can't track the path of the sun, not to mention clearing that much land or the fraction that could contribute the amount of energy produced threw coal would be more damaging.

Solar cells are viable source for individual use but not a complete answer.

In ten years it may be the best choice, but for now it's not. You're finding variables but missing the other factors at play, there is and still is enough destruction of land for energy, industrial, and society.