2.4 Overview of Solar PV Performance Issues
A number of factors are responsible for reducing the power potential that one can get from Solar PV. Here under are some of these factors explained.
2.4.1 Irradiance.
Irradiance is a measure of the amount of sunlight reaching on a particular surface area. When the amount is higher, the same is also for the power received by a solar PV ( (Subhash Kumar, 2014), (Pradhan Arjyadhara, 2013). Ethiopia as well as the study area have a good potential of irradiance. Hence, more suitable for promoting solar PV technology.
2.4.2 Temperature
Temperature is another factor affecting the power performance of solar PV. As the temperature is higher, the power obtained from solar PV declines. This is because of resistance, that means, when the temperature is too high resistance will also be high preventing the movement of little electrons from one place to the other. Eventually, power will be dropped too much (Priyank Srivastava, 2015),(accessed from www.us.sunpower.com on 18/10/2017). But, in the study area there is no too high temperature, rather moderate temperature which does not create any resistance for movement of electrons.
2.4.3 Shading
Solar PV’s can be adversely affected by shading. Shading is a no-brainer factor that reduces the
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Photovoltaic systems allow us to generate electricity and store it for use when needed. Photovoltaic contributes to our energy security, as a young technology, it creates jobs and strengthens the economy. For instance, the Bangladesh experience showed in 2003 that 12,000 jobs were created from the installation of 0.6 million SHS and in Ethiopia installation of 11,000 solar PV had created employment for 20 individuals (accessed from www.myclimate.org on 18/10/2017) and it is estimated to create 50,000 jobs from the diffusion and installation of 3 million solar PV including SHS solar lanterns (ISEI, 2012). It frees us from uncertainties and foreign oil
The effectiveness of PV module depends on how perpendicular the sunrays fall on the PV. If PV is facing toward the sun, it produces maximum power. Stationary solar panels cannot face toward the sun all day as sun moves. However, maximum radiation depends on two other aspects of stationary solar panels. One is the direction and the other is the tilt angle of the panels. A meter long panels can generate maximum of 1000W, if sunlight strikes directly on it. Few factors affect the sunlight strikes a PV panel. When the sunlight passes through the air, air molecules such as dust, vapor, clouds, volcanoes can absorb some of the radiation. This absorbed part of radiation is known as diffuse solar radiation. Atmospheric conditions have great effect on solar radiation. The solar radiation can decrease 10% to 100% depending on
Preview: Today I will discuss the potential that solar power has to become this country’s main supply of energy and the latest research that can make solar power more efficient and cost effective. I will also present the environmental benefits that come with using solar power over other and more harmful forms of energy.
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Most of the people in our modern day society are beginning to realize that fossil fuels are becoming more rare and are damage our planet, this creates the need for a more sustainable form of energy. Solar energy is one of them and is becoming more and more important and will hopefully soon replace this obsolete technology.
...rket share (Please refer to Figure: 6). The increasing opportunity and market growth is promising in the countries located in sunbelt region like India, China, Mexico and Australia (Please refer to Figure: 7) as all these countries are highly populated and in need of power. By 2020, demand for solar installation will reach to 84 GW globally and China alone could add up-to 10 GW of PV installations each year, as announced by the Chinese authorities (global market outlook).
Solar Photovoltaic power is one of the rapid growing energy sources in the world. The need for energy security and stability is driving governments across the world to promote and develop renewable power sources. The global solar Photovoltaic market witnessed high growth in 2009 and 2010, with 24,600 MW of installed capacity coming online in these two years compared to the 8,912 MW installed in 2007 and 2008. Cumulative installed capacity increased from 16,127 MW in 2008 to 40,727 MW in 2010. Europe is the leading solar PV market, with a share of 76% of the total cumulative installed capacity, followed by the Asia-Pacific region, accounting for a share of 16.0% in 2010.
In the Valley of the Sun, where cloudy days are few and far between, one would think rooftop solar is a great way to reduce or eliminate your utility bill. This paper will focus on three aspects of deploying rooftop solar: cost, efficiency, and permitting. For those thinking of pulling the trigger on this popular energy saving option please read on.
In the last few decades, technological leaps and the scaled-up production of solar panels have made sol...
The unsustainable nature of fossil fuels as an energy source, from the point of view of future availability and environmental impact, has spurred an interest in diversification of energy sources, with particular interest in renewable energy. The photovoltaic (PV) industry is a player...
Some say that solar panels can be very costly. Even though the sun is a free resource the cost to building it is expensive. Solar power is only effective during daytime, but the demand for the energy, it is continuous...
India is blessed with ample solar energy available which in turn can produce 5000 trillion KWS power by having average 300 sunny days per year and solar insolation of 4-7 kWh per Sq. m per day. Thus efficient trapping of solar energy could provide an alternative to fossil fuel dependent energy production. With increase in demand for power, now private sector has also started to invest in solar power due to better technological maturity and cost competitiveness. Technology for transforming solar radiation energy into both heat and electricity can harness solar energy effectively and have huge potential in scaling up power production. As there is positive correlation between energy requirement and GDP of the country, solar energy can address energy deficit in demand by both Off-Grid power supply ...
Solar Energy is an alternative electrical energy source. Its a renewable source, because of its abundant supply and limited environmental impact. Solar energy has the ability to power buildings, electronic devices, and spacecrafts through a specific process. The energy is harvested from the sun to made usable, thus it is a renewable form of energy. Solar energy is created by the use of solar panels, a collection of photovoltaic cells (solar cells, that mean light and electricity). The solar panels have a system in which, it collects the sun’s rays and converts it into energy (similar to the organic process of photosynthesis in plants), and sto...
Solar energy is one of the renewable energy sources that are highly sought after because of its applications and also as of the cleanest forms of energy. Solar energy applications are constantly increasing in the last few years, and they are considered perhaps the most promising that can significantly contribute to the total electricity generation. Solar Photovoltaic cells (PV) and the concentrated solar power (CSP) technology are the two main technologies out there when it comes to solar energy applications. These two are discussed below.
The sun shines upon Earth every day, yet no one thinks much of it. Solar power’s importance, though, is above what anyone could have ever imagined. There is active solar energy, which is when solar power is converted into light, heat, cause air-movement for ventilation or cooling, or store heat for future use. Less thought of, the other type of solar energy is passive energy, which most take for granted. Solar power provides life with heat, light, and now, electricity. Solar power also plays a role in 4 of the 5 areas of green technology: energy, green building, environmentally preferred purchasing, and green chemistry. All in all, solar power is quite a unique form of energy.
Solar energy in simple is the energy provided by the sun known as solar radiation. This energy can be used to produce solar electricity or heating. This energy can be for domestic use or even commercial use. The solar technologies are classified into 2 types, the solar photovoltaic (PV) and the concentrated solar power (CSP). For solar photovoltaic technology, the conversion of solar energy to electrical energy directly requires solar photovoltaic cells. In brief, the sunlight strikes the PV cell, the semiconductor material of the cell will absorb part of the light, and it will energize the electrons in the material, allowing it to flow freely, creating electricity. It is known as the photovoltaic effect. The other way to produce electricity