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Dec 07

SOLAR CELL AND ENERGY SECURITY

Oleh:

Andreas Prasetyanto Sandiwan

Mahasiswa Teknik Elektro dan Teknologi Informasi

2012

Modern society depends heavily on electricity. Most of our electrical energy is generated from fossil fuels, such as oil, natural gas, and coal. Because fossil fuel supply is limited, human society need other energy source to fulfill its energy needs. An answer to increasing energy demand is alternative energy sources, such as wind, wave, and solar power.

Solar power is generated by concentrating sun’s heat into one point (by using concave mirror) and by converting light energy directly into electrical energy. The second way is very popular and is done by using photovoltaic cells. The photon that hits the cell is converted to electricity by harnessing photovoltaic effect. To generate more energy, photovoltaic cells are grouped together to form solar panel.

Solar panels operate on a virtually limitless energy source, that is, the sun. As long as sunlight is sufficiently available, solar panels are able to generate energy. Solar panels are designed to last a lifetime and require little maintenance; this makes solar panels differ from other energy-generating mechanism from nonrenewable energy sources, such as coal, oil, and natural gas. It is estimated that the average solar panel system produces the energy equivalent of 583,000 pounds of coal over the course of its lifetime.

Using solar panels help to reduce dependence on nonrenewable energy resources which have limited supply. The use of solar energy also helps to conserve these and other resource, including water. Further, the conserved resources can be used for a longer period of time, so that future energy crisis can be evaded.

Solar panels’ reliability, efficiency, and ability to reduce dependence on nonrenewable energy sources mean that solar panels are able to increase energy security of a nation and the world itself. A nation that uses solar panels to generate its electricity doesn’t have to rely on nonrenewable energy resources. Regardless of whether the nonrenewable energy resources are im ported or not, their supply will certainly run out. Upon the occurrence of that event, the nation will not be plunged into an energy crisis. The argument presented here applies globally as well.

 

References:

Chandler, Nathan. How does solar power help the environment? http://science.howstuffworks.com/environmental/energy/solar-power-help-environment.htm

Cronn, Tad. 2010. Why Should I Consider Solar Energy.

http://www.livestrong.com/article/197231-why-should-i-consider-solar-energy.

Lake, Rebecca. 2010. What Are The Benefits of Solar Powered Homes.

http://www.livestrong.com/article/200635-what-are-the-benefits-of-solar-powered-homes.

Lake, Rebecca. 2010. Why Are Solar Panels Good.

www.livestrong.com/article/199319-why-are-solar-panels-good.

Nelson, Caterina. 2010. Long-Term Effects of Solar Power.

www.livestrong.com/article/206073-long-term-effects-of-solar-power.

Peters, Brian. 2010. Various Benefits of Solar Panels.

www.livestrong.com/article/154678-various-benefits-of-solar-panels.

http://science.howstuffworks.com/environmental/energy/solar-power-help-environment.htm

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