Did you know how much electricity the world consumes every year? According to the statistical data from the Index Mundi website, the global electricity consumption reached 17,780 billion kWh in 2011 and 19,090 billion kWh in 2012. With the constantly growing population and the expansion of technological infrastructure, this number increases each year while the energy resources of our planet are limited and will be exhausted in the near future.
At the same time, the Earth receives the average of 164 Watts of solar energy per square meter within a 24 hour day, making it 84 Terawatts of power (or 84 billion kWh) per day worldwide. So, the challenge is to collect the necessary amount of solar energy by the means of solar panels. You may