Pros and cons of solar energy

Pros and cons of solar energy

Solar energy is a renewable form of energy that is obtained from the heat and radiation coming from the sun. The Earth receives 178 PW of solar radiation; out of this amount, 30% is reflected back and the rest of it is absorbed by land, oceans, clouds and air. Only a fraction of the incoming solar energy is harnessed and used for various purposes like heating and cooking, distilling, disinfecting and pumping water, transportation signaling and the like. Solar energy is also used for different industrial processes and equipments such as corrosion protection system, environmental monitoring appliance, and so on.
Solar techniques used for harnessing solar energy can be segregated into two broad categories — active solar techniques and passive solar techniques. Active solar techniques include the use of solar thermal collectors and photovoltaic panels that collect solar energy, convert it into mechanical or electrical energy, and finally — distribute it. Passive solar techniques, on the other hand, are concerned with maximizing the use of sunlight. Some examples of this type of solar technique are orienting the building such that it remains towards the sun for the maximum period of time, selecting material with light dispersing properties, or creating a space that naturally circulates air.
Like any other form of energy, solar energy too has its own set of advantages and disadvantages.

Advantages of solar energy

The energy from the sun is free, and for harnessing it no fuel is required. Moreover, the electricity generated can be used to reduce electricity bills, and surplus power can be sold to earn extra money. The government also provides lots of financial incentives on using renewable sources of energy. Thus, all in all harnessing solar energy is a cost-effective proposition.

Solar energy is a renewable form of energy. It does not emit harmful gases that may cause air pollution. It also does not contribute to global warming, acid rains and smog.

Solar energy systems work independently and are not connected to any power grid. For this reason, these systems can be installed anywhere, in remote, sparsely populated regions, without any hassles. With the installation of these systems, dependency upon main sources of power is dramatically reduced.

Little or no maintenance
Solar energy systems require little or no maintenance. Once installed they keep on running noiselessly without emitting offensive odors or consuming fuel. Furthermore, these systems can be easily expanded depending upon the requirements.

Disadvantages of solar energy

High initial price
As the solar energy system is used for tapping, storing and converting renewable source of energy, therefore it is inherently high-priced. Thus, the initial cost of setting up a system is quite high.

Panels take a lot of space
The solar panels need lots of space for installation, and to a large extent, their efficiency depends upon their location. The more the amount of sunlight they get, the more power they will be able to generate.

Night time
Solar energy cannot be produced during night time. Hence, expensive storage batteries are required to form a superlative back up system.

1 Comment »

    anyo Says:

    i love this keep it up


Leave a comment