The use of solar cells as energy source is ………..
(A) expensive
(B) economical
(C) average
(D) none
Answers
Answer:
your answer
Explanation:
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Answer:
A ) expensive
EXPLANATIONS:
The solar energy sector has grown 68% over the last decade, thanks to hefty government subsidies paid for by tax dollars. Here’s the cloudy truth about solar energy.
Americans have seen some interesting changes in the Oval Office to say the least, but one thing that has not changed much is our consumption of renewable energy. Solar and wind energy made up 47% of new electric capacity last year, and the renewables sector has grown steadily since the mid-2000s.
Part of the reasoning behind this is cost. Installation costs for solar infrastructure have fallen 70% since 2006. Many homeowners have also done away with their electricity bill, thanks to net metering. But while the technology has become more accessible to homeowners and enterprises alike, there is a hidden cost to solar energy that lies in hefty government subsidies.
Part of the reasoning behind this is cost. Installation costs for solar infrastructure have fallen 70% since 2006. Many homeowners have also done away with their electricity bill, thanks to net metering. But while the technology has become more accessible to homeowners and enterprises alike, there is a hidden cost to solar energy that lies in hefty government subsidies.
The Most Efficient Solar Panel
Solar panel technology has advanced considerably in the last decade. Solar panels are divided into three main technologies: monocrystalline, polycrystalline, and thin-film. Each type of panel utilizes different technology to harness the sun’s rays and has a different range of applications.
Monocrystalline (mono) panels are the most efficient solar panel in terms of power output relative to panel size. These panels have the highest efficiency rating on the market at 15-22%, and therefore require the least amount of space. Mono panels also have the longest lifespan (25 years or more), due to the high-purity silicon used during manufacturing. Mono panels have the highest upfront costs of all solar technologies.
Polycrystalline (poly) solar panels are manufactured using several silicon crystals, and typically carry an efficiency rating of 13-17%. Poly panels require more space to match the power output of mono panels due to a lower silicon purity. However, manufacturing poly panels is a much simpler process, making the technology less expensive. Poly panels also have a lifespan of about 25 years, and over time may prove to be the most cost-effective.
Thin film (TF) is a newer technology made possible by depositing a photovoltaic material onto a surface. The photovoltaic materials used are not as energy-efficient as crystallin silicon, but still get an energy efficiency rating of 7-13%. TF panels require much more space to produce a commercially significant wattage, limiting the potential for residential installations. TF panels also lack the durability of mono or poly panels. Still, TP panels are much cheaper to produce than mono or poly panels, and can even be made flexible, offering solar options in situations previously thought impractical.
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