A Joule is the unit we use to measure energy, and an ExaJoule is a quintillion Joules. A quintillion is a billion of billions (ie: 1,000,000,000,000,000,000).
Tabulating and adding all our energy sources and their production, a recent study estimates that humans use about 560 ExaJoules of energy annually. This is 560,000,000,000,000,000,000 Joules.
This would include nuclear, hydro, coal, diesel, wave, wind, gas, firewood, petrol and solar among some others.
We all know with what a herculean effort, we manage to bring all of the above up and running to meet our energy needs.
Comparing our efforts under extreme conditions to meet this demand, it would be prudent to see what the Sun could offer us and what we have done about it.
The Sun is estimated according to a United Nations Development Program (UNDP) study to silently dish out a staggering 50,000 ExaJoules, which are 50,000,000,000,000,000,000,000 of solar energy annually.
The colossus amounts of solar energy that we have in abundance and at no cost are annually being lost without us doing anything about it.
We have been trying to master the art of harnessing all this energy for our use, though we have been about it since the early 1880’s, we are still groping in the dark.
The technology developed more than two centuries ago is moving very slowly, which from a layman’s point of view would be solar panels within solar power systems converting solar energy to solar power.
The audacity is such that the best solar panels marketed by all the leading suppliers and installers like solar panels Sydney, solar panels Melbourne, solar panels Adelaide, solar panels Perth and solar panels Brisbane perform only at 20% efficiency.
There are now very vigorous efforts in Research and Development (R&D) to produce the ultimate in affordable solar systems and it is envisaged that we will see the light of day soon, in the near future.