There is no pollution created during solar energy generation. It also does not produce radioactive waste or involve the environmental impact of fuel being transported to it. Hence, does not contribute to global warming, acid rain or smog. The most urgent electricity demands in rural areas are associated with better lighting, better information and communication, security for community members, and production and transformation of products especially the transformation of agricultural and animal products into more elaborated ones for the market, example cereals into flavour, milk into cheese, etc.
Such demand has to be met from low supply capacity (50W to 200W per family) for consumptions of as much as 50 kWh per family per month. However such small energy quantities provide important benefits, such as critical information through radio and TV (vaccination campaigns, spread of illnesses). Hence, the energy needs of the poor in isolated communities should be improved through encouraging the use of this power source.
Active solar energy
Active solar energy uses mechanical devices such as solar panels, pumps, and fans in the collection, storage, and distribution of solar energy for homes. These are technologies used to convert solar energy into usable light, heat, as well as cause air-movement for ventilation or cooling, or store heat for future use. In addition, according to present literature, nearly two billion people in the world have no access to electrical energy (World Bank, 1996). The immense majority of these live in remote rural areas in developing countries, where usual grid-extension electricity supply is not economically possible, and small diesel sets may be unsuitable due to fuel costs, absence of consistent supplies, and a general lack of technical support.
The uses were understood right away, but solar-powered electricity however is not without its drawbacks.
The main disadvantage of solar energy is the initial cost. Most types of solar cell require large areas of land to achieve average efficiency. Air pollution and weather can also have a big effect on the effectiveness of the cells. In addition, the semi-conducting silicon material used is also very expensive and the problem of night-time means solar cells can only ever generate during the daytime. Apparently, as fossil fuel reserves run down, their cost will rise until a point is reached where solar cells become cost-effective source of energy. When this happens, huge investment will be able to further increase their efficiency and lower their cost.
It could be seen that solar power is indeed a good source of power generation with greater output. Hence, this should be encouraged in developing nations and should be seen as an effective method of supplying power to their growing populations. Although major solar power development programs at BestEssayWritingHelp.org are large public works projects requiring huge amounts of money, most of it borrowed from the developed countries.
Nevertheless leaders of developing nations should bear in mind that, in the long run they will pay for themselves by bringing cheap electric power to their people.
In addition, solar power has a many advantages that shows its use as part of the methods for supplying electricity to an energy-demanding world. Even with preservation efforts, energy demand has been and will continue to increase. Other factors can give rise to that increase, e.g. the proposed shift to electric cars to meet environmental air quality goals. In using each and every one of these forms of energy production, we need to make sure we conserve as much as we can so we leave sources for future generations. Energy suppliers need to ensure that they do not add to short and long-term environmental problems. Governments need to ensure energy is generated safely and that neither people nor the environment is at risk.
Solar energy is the generation of energy from sunlight
Solar energy is the generation of energy from sunlight or the conversion of sunlight to electricity. As a renewable source of energy, Solar energy, sunny light and heat from the sun, has been harnessed by humans long time ago using a range of ever-evolving technologies. The heat from the sun (solar radiation), along with other secondary solar-powered resources like wind and wave power, hydroelectricity and biomass, are responsible for most of the available renewable energy on earth today.
Solar cells provide cost effective solutions to energy problems in places where there is no mains electricity. Solar power stations can be set up in almost any size, depending on the available resources; big enough to power a single home, factory, small town, or large city.
In the contest of environmental sustainability and renewable energy technology, I strongly encourage the use of solar power for electricity generation. It has more advantages than some other sources of power generation when compared to them. Also, to make the globe a healthier liveable place, environmental protection or sustainability should be in the mind of everyone when thinking of method of power generation.
However, in a world of growing demand for clean, dependable, and affordable energy like ours, the role of solar power and multipurpose solar infrastructure, which also offers important opportunities for poverty alleviation and sustainable development, is expanding. As a renewable energy, it also plays a unique dual role in climate change; as an adaptation strategy for growing weather variability and as a renewable resource to move economies to a lower-carbon future.
Also, the graph above shows the sequence of price reductions over the last ten years for the cost of 4 kWp residential solar system in Japan in money of the day. Japan leads the world in PV prices as a result of being the largest country market and hosting the largest PV cell manufacturing companies. Using this type of energy to generate electricity is not dependent upon the price of uranium, oil, or other types of fuel. This makes electricity costs lower and more stable; one of its most significant advantages in online assignment writing help.
Solar renewable energy
Solar renewable energy has edge over all other renewable sources of energy. This competitive edge is due to the abundance and availability of this natural resource. Other renewable energy sources such as wind, hydro, nuclear, and bio fuels have many limitations. It is an essential factor to sustainable energy and contributes to world energy security, reducing reliance on fossil fuel resources, and providing opportunities for mitigating greenhouse gases. It reduces the flue gas emissions from fossil fuel combustion, including pollutants such as sulphur dioxide, nitric oxide, carbon monoxide, dust, and mercury in the coal.
Solar energy also prevents the hazards of coal mining and the indirect health effects of coal emissions. Compared to nuclear power, solar power generates no nuclear waste, has none of the dangers linked with uranium mining, or nuclear release. Furthermore, wind is either dependant on weather or it is constrained to coastal regions. Hydropower on the other hand varies with region to region. Building a dam is very expensive and the high cost implies that they must operate for many years before they can yield profits. Also, natural environment is destroyed when flooded and people living in towns and villages close to it are forced to move out.
However, sun is everywhere and it is a free resource.
Thus, cannot be stopped to travel its way to earth, because this energy source is not the property of any individual. Another feature which makes it desirable to use is that it is available both in developed and under-developed countries of the world in equal intensity and magnitude. As a result, there is no licensing and limitation to its use. Moreover there are no production tools or strategies required to avail this huge natural resource. Since they do not involve or have moving parts they require little maintenance and have a long lifetime. Unlike other renewable sources they have other merits; wind and hydro power depend on turbines which are noisy, expensive and prone to breaking down. They are completely silent.
Solar renewable energy is seen to be the most environmentally friendly for cooking purposes.
The rural areas where there is abundance of sunlight and forests solar cookers have been introduced. This approach will avoid the process of deforestation and the smoke as a result of burning wood. This renewable energy source is used to provide heating and cooling space facilities. Furthermore, it is a safe substitute for electric lights. Hence, the applications of solar energy are unlimited now solar energy. Thermal glycol energy is used to heat water. In this method (indirect circulation), glycol is heated by the sun’s rays and the heat is then transferred to water in a hot water tank.
Solar energy generation
The chart below shows solar energy generation in 2001 for the leading solar energy-generating countries in the world. Japan has developed large solar power facilities in the last decade and now leads the world in its usage. But, from north to south and from east to west, countries all over the world make use of hydroelectricity. There are many methods to generate electric current using sunlight but the most common methods are photovoltaic and concentrated solar power. Photovoltaic contains an array of solar cells which are pressed in solar panels.
These solar panels are protected and framed by a glass sheet. This sheet does not allow any impurities to pass in, thus only sunrays can make their way through it. These solar panels are made up of conductive materials such as impure silicon and copper indium respectively. These conductors help and support the flow of electrons; hence making the heat present on the solar panels is to generate direct electric current. The electric current generated cannot support the electrical devices. Because of that, it is converted to alternative current (AC) by using inverter and battery.
Photovoltaic energy is growing fast and it is so far the only rapidly progressing renewable energy technology today. Concentrating solar power systems on the other hand work on the principle of converging the sunlight from many kilometres to single focal point. The concentrated energy stored in this form is converted to thermal (heat) energy which is then used to support photovoltaic. The energy stored by the Concentrating solar power (CSP) is also supportive in running steam turbines.
This technique of collecting the sun’s energy is more practical now than ever.
In areas as far north as Edmonton, Alberta, solar thermal to heat water is economically sound. It can pay for itself in three years or less. It is used to run wind turbines, steam turbines hence reducing the pollution effect. Solar energy is the safest energy source which has no side effects to human health whether it is used to generate electricity or cooking food. Active and solar heating processes are both renewable energy sources because both work on utilizing natural resource sunlight in combination with wind mills.
Passive solar energy
Passive solar energy refers to the capturing of the sun’s energy without the use of mechanical devices. Using south-facing windows to provide natural lighting and heat for your home are examples of passive solar energy. A Trombe wall circulates air by natural means and it represents itself as a thermal mass. Some windows, light shelves, skylights and light tubes take in heat during the day and can generate heat at night.
Solar power thus, is a green energy that is environmentally friendly and is part of the solution to global warming and the world’s currently growing demand for energy.
Sun is everywhere and is ready to cope with peaks in demand, and much more reliable than wind, hydro or fossil fuel power generation. The cost of electricity is economically cheap and produces no greenhouse gases and hence reduces the effect of global warming as well as meets the needs of the present world without compromising the ability of future generations to meet their needs. This I suggest should be accommodated world-wide as a means of saving the world.