This generation is very heavy and leading to several environmental issues such as climate change and global warming which lead to ice melting and sea level rise.
Because of environmental pollution and exhaustion of fossil fuel resources, world has to stimulate the growth of renewable energy sources for better production.
Fig. 8 shows the world fossil fuel energy status. It is clear from the Fig. 8 that the energy sources will no more be available after the year 2300.
Hence, many steps are now being taken to increase the use of renewable sources.
Fig. 9 shows the annual average growth rate of renewable energy capacity worldwide.
Significant increase, around 39%, has been recorded for solar PV in the year
2013, which clearly shows its promising trends towards fulfilling world's energy need.
Photovoltaic technology is developing very fast to generate more electricity for satisfying needs of people. Fig. 10 shows trends in solar electricity net generation.
Significant increase has been taken place after the year 2007, as of the incorporation of new technologies such as traction, focusing and evacuated tube collectors.