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Period 1 Jason Hong Iris La Mabel Chan
Solar Power Period 1 Jason Hong Iris La Mabel Chan
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Source SUN
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Cost Costs significantly higher than hydrocarbon fuels to generate electricity Avg. system cost: $95 per square foot Avg. solar panel output: 10.6 watts per square foot Avg. solar energy system costs: $8.95 perr watt
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Equipment Solar panels; photons in suns rays strike the electrons so they are free to carry an electrical charge Semi-conductive materials (mostly silicon) are used
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Efficiency 15% of sun’s energy is converted into the sun
Initial costs are high (5-KW system costs $45,000) Not very efficient now, but technology will improve in the future
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Consumption/Usage Provides less than 1% of U.S. needs
Provides less than 1% of worldwide energy consumption historically and in the foreseeable future
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Disadvantages Not usable during stormy weather or night time
Not efficient in areas with little sunlight Initial costs are very expensive
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Disadvantages Always need to be facing the sun without blockage; hard to get sunlight in the valley Improper disposal can pollute the environment; solar panels contain toxic materials like lead and sulfur
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Advantages Makes no noise Very little maintenance to keep running; no moving parts Money evens out in the long run
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Advantages Technology is improving consistently Easy to install; no cords or power sources Safe for animals
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Advantages Completely renewable
Energy can be stored in batteries and used whenever Absolutely no pollution
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