Around a hundred years ago, a man tried to utilize the heat of the sun to make his machinery run. His strategy was to start and operate the machines with steam that was produced by the hot sunlight. When other scientists found out about this, they examined his discovery and decided to find their own ways of utilizing the sun. As a result of their efforts, there are many devices that use a variety of natural and renewable resources for power.
Among the ways that are currently being used for transforming the sunlight into power is through the use of solar energy panels. We've always had the energy of the sun but only lately have we been able to take full advantage of the energy through solar panel systems. Machines that run due to the sun also transfers the heat to generate energy. Solar panel systems have also become a highly effective way to turn natural light into electricity. You observe this at all times in hand calculators, satellites and space ships. These days, you'll find solar panel systems as the primary way to create power from the sunlight. This is achieved through pv cells.
Certainly you've seen solar panels on dwellings or the tops of buildings, and also noticed the different shapes and sizes. They are often found in rectangular, square or even round shapes, and found in power efficient devices and hand held units. As more study is being carried out on our natural resources, such as the sun, more things are being developed that provide for our way of life. The sun has been an awesome resource for years, and with the breakthroughs being made, it is anybody's guess what it might be used for in the future. With all the breakthroughs made in the last hundred years, who knows what the next century will bring.
When solar energy panels first started out, there were certainly reliability concerns. At first, it was pretty expensive to use solar energy as a way to power and heat your residence. As efficiency and technology improved, the cost to create solar panels dropped significantly. It's still less costly to use heat and electricity that has been produced through man made methods. Once you have your solar panel system set up, you will not have to pay for electricity, so over time, you'll likely spend less.
You will always have electrical power as long as the sun is shining, so the location where you live is crucial. So long as you have energy stored up from the sunny days, you should have ample electrical power for when the days are cloudy.