Build Solar Panels

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Every hour the sun beams onto Earth more than enough energy to satisfy global energy needs for an entire year. Solar energy is the technology used to harness the sun's energy and make it useable. Today, the technology produces less than one tenth of one percent of global energy demand. 
Many people are familiar with so-called photovoltaic cells, or solar panels, found on things like spacecraft, rooftops, and handheld calculators. The cells are made of semiconductor materials like those found in computer chips. When sunlight hits the cells, it knocks electrons loose from their atoms. As the electrons flow through the cell, they generate electricity. 
On a much larger scale, solar thermal power plants employ various techniques to concentrate the sun's energy as a heat source. The heat is then used to boil water to drive a steam turbine that generates electricity in much the same fashion as coal and nuclear power plants, supplying electricity for thousands of people. 
In one technique, long troughs of U-shaped mirrors focus sunlight on a pipe of oil that runs through the middle. The hot oil then boils water for electricity generation. Another technique uses moveable mirrors to focus the sun's rays on a collector tower, where a receiver sits. Molten salt flowing through the receiver is heated to run a generator. 
Other solar technologies are passive. For example, big windows placed on the sunny side of a building allow sunlight to heat-absorbent materials on the floor and walls. These surfaces then release the heat at night to keep the building warm. Similarly, absorbent plates on a roof can heat liquid in tubes that supply a house with hot water. 
Solar energy is lauded as an inexhaustible fuel source that is pollution and often noise free. The technology is also versatile. For example, solar cells generate energy for far-out places like satellites in Earth orbit and cabins deep in the Rocky Mountains as easily as they can power downtown buildings and futuristic cars. 
But solar energy doesn't work at night without a storage device such as a battery, and cloudy weather can make the technology unreliable during the day. Solar technologies are also very expensive and require a lot of land area to collect the sun's energy at rates useful to lots of people. 
Despite the drawbacks, solar energy use has surged at about 20 percent a year over the past 15 years, thanks to rapidly falling prices and gains in efficiency. Japan, Germany, and the United States are major markets for solar cells. With tax incentives, solar electricity can often pay for itself in five to ten years. 
We know that the majority of homeowners choose to go solar because it makes good sense from a financial point of view. That being said, the environmental benefits are also clearly worth mentioning. 
You can go a long way in lowering your carbon footprint by replacing utility power with clean electricity from solar panels. 
We will inevitably run out of oil, coal and natural gas. While we continue our consumption of these increasingly expensive and dangerous energy source, our national security and economy suffers. 
With solar power, the conversation of whether to choose it or not can be a difficult one. Many people are put off by the costs of setting up the panels, the installation and the accessories needed to keep it monitored, and alongside this there is the fact that solar power is a very new technology 
The average residential solar system offsets about 100,000 lbs. of carbon dioxide in 20 years – the equivalent of driving a car for 100,000 miles. 
for homeowners to consider, and this makes it mysterious and somewhat 
unapproachable, as the thought of figuring out the system and organizing the set-up can seem like too much hard work for very little return. The truth is, there are many more advantages to solar power than many people realize, and over a long enough time period these strongly outweigh the counter- points. 
On the whole, the argument about solar energy comes down to cost. Many people still think that solar power is years away from being financially viable, and to some degree this is true – solar power is only worth the investment if the individual has a long term plan for the panels and carefully monitors its usage in the first few years to make sure the balance between output and usage is just right. In the off-grid systems, too many panels or not enough usage can mean wasted energy and in turn, money. Those who are out of the house for the majority of the daylight hours, such as those in full-time employment or those who travel frequently, will need to also invest in back-up batteries to store the excess energy that is produced by the panels while they are away from the house. 
An on-grid system is often a better solution for those who will not be in the house around the time that the main source is being generated. This is because this will feed power back to the grid when the house is not consuming it, and this will be converted into some kind of credit back from the power company, often in the form of subsidized energy bills or a check for a monetary value for the energy produced. 
Solar power is being used in more places than ever; homes, businesses, outdoors to power lights and traffic cameras, even on satellites revolving the Earth. The facts are that there are many advantages to using solar energy as long as the system being used is suitable for the individual’s needs. 


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