Solar power is one of the most renewable sources of electricity in the world. The sun shines almost every day, therefore providing photons to power the solar panels for as long as the sun still shines. It can lower your electric bills to a miniscule amount and it’s very friendly towards the environment. Did you know that scientists at the German Fraunhofer Institute broke the world record for the most efficient solar cell? Their design uses a new cell structure containing four solar sub cells to become 44.7% efficient. It’s only 0.7% more efficient than the previous world record, but “it brings the solar industry one step closer to achieving 50% efficiency”(Valentine, Katie).
Solar panels are panels that generate electricity when exposed to radiation from the sun. Solar panels use silicon, which emits an electrical current when in contact with light, to generate electricity. The radiation provides photons, or units of electromagnetic radiation, to the silicon to generate electricity. Pure silicon is not a good conductor, so solar companies add other elements, like phosphorus and boron, to the solar panels to “beef up, or dope, the cell’s two silicon layers” (Chasteen, Stephanie). This is shown in Figure 1. At the top there are metal conductor strips to grab the electrons to generate electricity. Solar panels also use anti-reflective coating on a protective sheet of glass to protect it and to prevent the photons from reflecting off the silicon back at another object.
Solar panels are the perfect solution if you have high electric bills and live in a hot and sunny climate. Once the solar panels are installed, major maintenance won’t be required for a couple of decades until the solar panels break, but you will need a yearly chec...
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Solar energy is energy taken from the light that reaches earth's surface from the sun. There are four different kinds of solar energy, which are active solar systems, passive solar systems, photovoltaic cells and concentrating power systems. An active solar systems is a system that captures solar energy by mechanical means. Common active solar systems are often in buildings or homes. Some examples are roof collectors and water heating. Low Intensity and high variability have limited the use of active solar energy in Canada. A pass...
for our environment? People are starting to second guess solar energy but it is still used and
Online, Chemistry, ed. "Solar Powering the World." Solar Energy (Photovoltaic Cells). 29 July 2008 .
In this modern fast paced world that we live in, there are many issues that are looked over, energy is one of these. As a world, we are dependant on dwindling fossil fuel supplies and take for granted electricity, oil, and gas. There are four completely renewable sources of energy around us that should be used and developed, they are: wind, growing plants, flowing water, and the sun. These sources of energy are the ones we should be tapping, because they are reliable and renewable. Harnessing the suns energy is the most certain and ultimate energy source. Looking at a brief history and some facts about solar energy, a glimpse of the future can be seen, a future not dependant on fossil fuels.
Nanotechnology is the answer for solar energy. With electrical device being used 24/7 and electricity on high demand, we need to constantly produce energy. Nanotechnology can help rise efficiency up to 40% which allows a normal panel module to produce around 30 watts per square foot. That’s 1.3 mWh for one acre. With this advancement in the process of development, soon there won’t be any energy crisis.
Rotman, David. "Finding a Solar Solution." Technology Review 2 (2012): 48-51. Print. 22 November 2014.
Saini, Keshav. "Solar Thermal Energy Pros and Cons | Environmental Issues." Environmental Issues Blog. N.p., 6 Jan. 2012. Web. 04 Mar. 2014. .
Solar is a viable alternative energy source with solar panels becoming more affordable and more efficiently designed.
I am certain that all have heard of the terms greenhouse gases, fossil fuels, and global warming. Have you ever questioned what will happen if nothing is done about the environmental problems facing the world today? What if I answer you that, we can merely use the power from the sun to power up our entire planet without the use of harmful energy sources, which affect our atmosphere? The power from the sun is what we call solar power. Solar power is the energy that comes from the sun as light and heat energy, and then it is later converted into electrical energy through solar panels (Nelson, 2008).
The photovoltaic effect, electricity can be created directly from sunlight. Some semi-conductor materials that are exposed to sunlight can create electron-hole pairs, which can be collected to produce electricity. This occurs when photons have energy above a certain threshold. These photons have shorter wavelengths. In silicon, the threshold for electron-hole production is in the infrared region of the electromagnetic spectrum.
First of all, solar energy is the energy produced when the sun heats the solar panel. Thus, when the sun heats the panels, it produces electricity. Solar power produces energy during the day and can store energy for the night. Solar power does not pollute the environment. However, it has high maintenance cost, and it takes a lot of land space.
Wind is a form of solar energy. The term wind energy describes the process by which the wind is used to generate electricity or mechanical power. Wind turbines convert mechanical energy from the wind into electrical power. Wind turbines usually have three main parts. There are blades that connect to a central hub, a box behind the blades that contains the generator, and a long stem that connects to the ground. The way how it works is that the wind turns the blades, which spins a shaft that connects to a generator making electricity. After the electricity is produced it is sent through transmission lines to a substation that is sent to business and homes. For the sake of our planet, we must promote a renewable energy economy. Wind power can be a foundation of that sustainable energy future because it provides jobs in states that are building wind turbines, is a renewable energy source, and does not damage our environment. The environment will not be damaged by the pollution, the natural resources will not be used up, and there won’t be generating of hazardous wastes. Welcoming wind energy today will lay the foundation for a healthy tomorrow that will affect everyone in the United States. There are obstacles and challenges that will make it more difficult, but the environmental impact is well worth it to invest more money into wind energy.
With the depletion of fossil fuel resources comes speculations and debates about alternative energy sources. The world, including the Philippines, is practically dependent on a dwindling non-renewable source of energy. Today, experts are debating about and considering three options: Nuclear, Solar, or Wind Energy. Everyone has been accustomed to the bad image of nuclear energy as a result of the Chernobyl and Fukushima incidents above all others. The popular belief is that radiation from a nuclear meltdown is very harmful to humans and other living things—which is true—and that nuclear power plants are very dangerous and not ideal—which is not. According to Smith, et. al (n.d), all the nuclear disasters that ever occurred were caused by human error and natural disasters like tsunamis, not one because of system failure. Putting the false beliefs aside, with proper engineering and adequate maintenance by experts, a nuclear power plant is a very ideal and viable source of energy for the following reasons:
This paper will explore the many aspects of solar energy. From how it was discovered to what it is used for, how it is used, and the many benefits of it. Solar energy is defined as, radiant energy emitted by the sun. Solar energy has been used for many years and also has been used to generate a number of things that we use today, from solar powered cars and cell phones; solar energy is a huge aspect of human life as we know it. If it weren’t for solar energy, many things may not be able to operate and many other things may not have been discovered because of it.
Using fossil fuels such as coal and oil is inefficient, dangerous, and otherwise a process that is known to eventually fail as a long lasting energy source. Yet, there is hope for the future of energy, this new hope has many shapes and forms, but requires a chance to be fully implemented in our everyday life. Such energy sources like solar energy, wind energy, geothermal energy, and hydro power are the key to our future. These energy sources are proven to be long lasting, safe, more reliable, and the next innovation. In short, all Americans should switch to renewable energy, resulting in a safer and more efficient world.