The modern world is facing a very unique problem. Advancements in health care and science have made is possible for humans to experience a much longer life expectancy than ever before! This continued increase in the population inevitably means that there is a much higher demand for energy sources. People from all areas of the world rely upon energy for survival as well as for day-to-day convenience.
One of the major components of what energy provides for the human race is electricity. Having ready access to a major electric grid is a huge part of what has made it possible for human culture and technology to have advanced so far. Electricity makes it possible for us to store large amounts of perishable fuel via refrigeration, what allows us to spend time working or in recreational activity after the sun has gone down. In fact, we do not realize how much electricity impacts our day to day lives until we do not have access to it.
The fact is that reliance upon electricity, fossil fuels and other non-renewable sources of energy is a gamble at best. Fossil fuels will eventually run out, and electricity only works as long as we have access to the power grid. In the event of a natural or human-made disaster, that access will become null and void.
In the past few decades, there has been a huge interest in solar energy and other sources of renewable energy.