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Key Benefits of Solar Electricity

Time£º2016/9/13 Posted£ºSun-Ray Enterprise Co., Ltd

Energy Independence

There are many other ways to generate electricity, but what are the specific benefits of solar generated electricityfrom photovoltaic cells? One of the most attractive benefits is that you will have ¡°energy independence," the ability to create your own electrical power, independent of fossil fuel supplies or utility connections.


Fuel Is Already Delivered

In a sense you do need sunlight as the ¡°fuel¡±, but that is already delivered for free all over the planet¡¯s surface. Other conventional generation methods require access to a site for fuel deliveries.  This may limit the choice of suitable sites so as to have road access, and even then access may be prevented due to poor road conditions, or vehicle problems. The cost of delivering fuel to remote locations can be substantial. For example, it has been estimated that it requires one unit of diesel fuel to deliver one unit of diesel fuel to remote villages along the Amazon River in Brazil. In other words, the cost of the fuel is doubled!


Minimal Maintenance

Solar electric systems typically require very minimal maintenance because there are so few moving parts. Contrast this with a diesel-powered system or even other renewable sources such a wind generators or hydro generators, which often have costly repairs or regular maintenance of moving parts. Very complex photovoltaic systems do have more parts and may require some maintenance. But when looking at small power requirements, such as for home lighting or remote telecommunications systems, only occasional battery maintenance is required. It would be a mistake to say that photovoltaic systems require NO maintenance, but the absolute amount of time and money required for photovoltaic systems is quite low.



Maximum Reliability

 This is perhaps the primary advantage of photovoltaics when compared to any other form of electrical power generation.  Because there are typically few or no moving parts and the complexity of the systems can be kept low, the ultimate reliability of photovoltaic power systems in the real world is quite high.  The photovoltaic generator typically is not affected by environmental effects such as lightning strikes, high winds or blowing sand, humidity and heat, or snow and ice. The key to reliability is quality and simplicity.  If high quality components are used with the solid-state solar generators, and if the component count and complexity of the system design are kept to a minimum, the chance of any failure occurring is remarkably low.


Generate Where Needed

You can think differently about designing power systems for your loads, and not always have to consider a central generator large enough for all your current demands.  You can distribute the generation of power to various sites, such as at each classroom, or each house, rather than always having to install a large generator and string power lines to individual users that might be separated by great distances. Telecommunications systems designers can look to photovoltaics as a way to perhaps be more selective with the locations of their repeaters.  For example, an engineer might be considering covering a certain area with repeaters, and think that he is forced to choose sites that are easily access, so that diesel fuel can be delivered and maintenance can be performed. But the sites may not be the optimum for coverage of the area.  Instead, by choosing to use photovoltaic power for his sites, he may now consider more remote, inaccessible sites, and may actually be able to install fewer total repeaters but end up giving the same coverage that the more numerous accessible sites would give. Because photovoltaic generators can be as small as a few watts, you can truly consider installing just the amount of power that you need at each site. This flexibility is not available from other forms of generation.




Reduced Vulnerability
Because you can avoid stringing long power lines for many miles or kilometers from some central generation source, many of the problems with utility power losses can be avoided.  Ice storms or vehicle accidents can cause power lines to go down, perhaps tens or hundreds of miles from where the power is actually needed. With a reliable photovoltaic power system at your site you could still have power, while others around you have none. And if you have chosen to distribute the generation of power to various load sites at your location, you can insure even more reliability and less vulnerability to each load site.  For example, if separate homes have their own lighting system, and one user overdischarges their batteries, or damages their system, the other users will be unaffected. This also applies to deliberate vandalism or terrorism.  For example, having electrical generation for lighting and security distributed to each building would make loss of security for the whole site more difficult or practically impossible.


Easily Expanded
Photovoltaic power generators are modular by design.  More power can be added to an existing array easily. Old modules can be added to new ones without any penalty (if the voltages are properly matched). Just enough power can be purchased and installed today to meet your current needs, and as demand grows more modules can be added in later years. This also means that financially it is easy to start with a minimal power system today, and then add to the power as your budget allows later.

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