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Green Roofs or Solar Roofs ?

You want to contribute to our earth but have no thought? Everyone knows Global warming and unban heat island effect are making inroads into the places where you and your family live. We all know that is a serious issue, and also have positive attitude toward it.
Suppose that you are not a boss of an enterprise, therefore, you are powerless to choose how to emission air pollution or recycle resources. Don’t be discouraged! You still have a way that is to develop the thought of green design to protect our earth. Green design is an international
theme that has been discussing for many years, and was promoted in “Leaders Summit Meeting” in Brazil in 1992. It is called Ecological Building in Japan and Sustainable Building in Europe. How to place the thought in use? Home Green Design is an affordable way for everyone. I am going to introduce two ways to save energy. They are green roof and a roof covered by solar panels. This essay will show their advantages and disadvantages of the following: 1. Expense; 2. Working
requirement; 3.Function. Despite the fact that everyone knows the benefit of solar panels, I will argue that green roof is worth than solar panels.

First, you do really care about the expense that green roof and solar panels might cost. For a100 sq foot, you need about $25,000 to install solar panels on your rooftop. The system works at least 25 years. On the other hand, it will cost you $1,000 per year. Is that worth? It
depends on your personal utility rate of electricity. You would save a small amount of money if you are living with a huge family. But a fact that you have to consider is one dollar tomorrow probably won’t have same value as today. Otherwise, you still need to pay the upkeep of the system every year and the charge of basic power for keeping it working. It is priced $1,500 for the same area as 100 sq foot, and the maintenance will not be the problem. Basically then, all you need is a waterproof rooftop, a layer of soil and a bag of seeds. The thought of Green Roof is much cheaper obviously and has lower maintenance than solar panels by comparison.

Next is the working conditions that for each one. Before you choose one of them, you might need to consider that the area you live is sunnier or cloudier. Solar panels that as the name hints, is a system that has to be solarized under sunshine. In addition to sunshine, the
Green Roof also needs adequate raining to support them growing. If we simply consider that the best environments for them, solar panels need less conditions than green roof. Really, solar panels will still work on a cloudy day. Of course, no one expects that the system can maintain same efficiency as it used to be on a sunny day. But, that is probably enough for keeping a lamp plus a computer working for one day. Unfortunately, solar panels do not fit in a winded area, because the panels might be hurt by blown stuff. In this stage, they are nearly in a tie. Taking that green roof is working 24 hours a day into account, I guess that green roof is a small bit better than solar panels.

Lastly I will compare the most vital part which is the function of them. In theory, solar panels can basically reduce your energy consumption. What would be powered with solar electricity are the things such as the refrigerator, the computers, the TVs and the air
conditioning, etc. Sounds fantastic! But something you do not know is solar panels efficiency averages only 20% to 40%. Solar panels catch sunlight and convert to another type of power that we usually use for home electronic appliances. The system loses much energy during the
conversion process. You can’t make appliances working unless you get enough energy from sunlight. So how about green roof and its benefits? It not only filters rains and air pollutants, but also keeps the house warmer in winter and emissions heat in summer. Sometimes it can
even provide a habitat for birds and some small animals.

To choose solar panels or green roof is a fascinating question. It is a tough choice for either, I will personally choose green roof anyway. Solar panels are still an immature technology somehow, especially in converting energies. In addition, price is also a point to be considered. I believe that to protect living environments is vital for individuals, but it is unacceptable if
no one can solve the problems that I mentioned before.

Green Roofs or Solar Roofs ?

Do you want to contribute to our earth but don’t know how? Global warming and the urban heat island effect are making inroads into our homes. This is a serious issue, and we must also have a positive attitude toward mediating this situation.
Suppose that you are not a boss of an enterprise; therefore, you are powerless to choose how to reduce air pollution nor recycle resources. Don’t be discouraged! You can still influence others and help preserve the earth by supporting the thought of green design. Green design is an international
thought that has been discussed for many years, and was promoted in the 1992 Leaders Summit Meeting in Brazil. It is called "ecological building" in Japan and "sustainable building" in Europe. Home green design is an affordable way to save energy. Two methods of saving energy are the green roof and a roof covered by solar panels. Though each of these two methods have their own advantages and drawbacks regarding expense, working conditions, and function, green roofs are a more effective way to save energy.

Expense is a very vital thing taken into consideration when deciding between green roofs and solar panels. For a 100 sq foot roof, you need about $25,000 to install solar panels on your rooftop. The system works at least 25 years. But, maintenance of the solar panels will cost $1,000 per year, putting its worthiness into question. Its worthiness depends on your personal electricity usage. You would save a small amount of money if you are living with a huge family, but a fact that should be taken into consideration is that the value of money between now and the future fluctuates. Otherwise, you still need to pay the upkeep of the system every year and the charge of basic power to keep it working. Green roofs are priced $1,500 for the same area without the need for maintenance. Then, all you need is a waterproof rooftop, a layer of soil, and a bag of seeds. The thought of Green Roof is much cheaper obviously and has lower maintenance costs than solar panels.

An additional factor to consider are the working conditions of each method. Before you choose one of them, you need to consider the weather in your area. Solar panels, as the name hints, is a system that needs sunlight to function. Green roofs need adequate rain to support growth as well as sunlight. Comparing the two systems’ working requirements, solar panels need less than green roofs. Though solar panels still work on cloudy days, they will not maintain the same efficiency as they would on sunny days, though the amount of energy provided may be enough depending on your needs. Unfortunately, solar panels are not ideal for windy areas because they might be hurt by flying debris. Though the solar panels and green roofs are nearly equal in regards to working conditions, green roofs are slightly advantageous in that they are working 24 hours a day.

Lastly, solar panels and green roofs have slightly differing functions. In theory, solar panels basically reduce your energy consumption. What would be powered with solar electricity are the things such as the refrigerator, the computers, the TVs and the air
conditioning, etc. Sounds fantastic, but solar panels efficiency averages only 20% to 40%. Solar panels absorb sunlight and convert its energy to a type of power we can use for electronics. The system loses much energy during the
conversion process, and will not be able to power appliances unless sufficient amounts of sunlight is absorbed. On the other hand, green roofs filter rain and air pollutants in addition to keeping the house warmer in winter and cooler in summer. Sometimes it can
even provide a habitat for birds and some small animals.

Choosing between solar panels and green roofs is a fascinating question. Though each system has its own benefits, green roofs are more advantageous to the average person. Solar panels are presently an underdeveloped technology especially concerning energy conversion and are more costly than green roofs. Protecting the environment is an vital thing and we must work to solve the problems threatening it.

I was going to add a few notes here and there, but the answer was too long. Try to make an original title, and not say "I am going to…" because it’s obvious. Also, if I changed the meanings of some parts (some parts were ambiguous), feel free to ignore the change.

Hope I helped.

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Grameen Shakti has sold and installed over 65,000 solar home-systems (SHS) in rural Bangladesh, and brought major benefits to its users. Nearly 70% of households in Bangladesh are not connected to the electricity grid and depend on kerosene for lighting. This includes most rural areas and extends as far as the fringes of Dhaka. There are plans to extend the grid, but there is small prospect of substantial change in the foreseeable future.

By selling SHS, Grameen Shakti has provided lighting, communications (especially mobile phone charging) and TV, and has increased employment opportunities. It is the largest single installer of SHS in Bangladesh.

This impressive number of installations has been achieved by enabling users to buy their systems on micro-credit with affordable terms, tailored to their specific needs. Funding for the micro-credit system comes from the World Bank and GEF via the Infrastructure Development Company Limited (IDCOL) which provides Grameen Shakti with both subsidy and concessional loans. The cash pool from credit repayments will enable Grameen Shakti to continue the scheme when the subsidy, which is being phased out, ceases in 2008.

Grameen Shakti has also started a network of technology centres throughout the country to manage the installation and maintenance of SHS locally. It emphasises the importance of technicians who know local customs working through local branches, and has trained 2,000 (mainly female) technicians. It aims to install 100,000 systems by 2006 and sees the potential to install one million systems by 2015.

Duration : 0:4:38

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Solar Energy Panels For Home Use

One of the fantastic things about the advancement of technology is that things that were very expensive in the past are now quite affordable. Solar Energy panels for home use are a perfect example of that. Solar panels used to be expensive to buy, but now the price is low enough that more and more people are considering taking advantage of this alternative form of energy.

If you’re a newcomer to the world of solar electrical systems you may be wondering exactly how solar energy panels work, and how it is possible to convert sunlight into electricity. While the science behind it all is complicated, the process itself is amazingly simple.

What is commonly known as solar panels are “photovoltaic” panels. It is a fancy word that means electricity from light. Plates within the panels are coated with a substance that reacts with the light that is collected on them. When light strikes these plates protons are released. These protons displace neutrons. This process makes a flow of electrons. An inverter in the system converts the electricity to direct current (DC), which makes it safe for use in your home.

The electricity that is made in a solar electric system is useable in virtually any application in and around your house. You could use it to run your lights, power your tools, operate your radio and television, or any other task that requires electricity.

So, what happens when the sun goes down and your photovoltaic panels aren’t making electricity? When that happens you have a couple of choices; you can either switch back to using the power from your electric company, or you can get a storage system that uses batteries to continue supplying your electrical needs.

When your system is operating and producing electricity, a part of that electricity is diverted to your storage system. This keeps the batteries charged and ready to use. When your systems stops producing what you need, the storage system kicks in and supplies what you need.

Solar energy panels are becoming honestly simple to find. Chances are you will be able to find a supplier close to where you live. If not, the internet is a valuable resource for finding suppliers, and for shopping for the lowest rates.

Solar energy panels for home use are safe and simple to work with. Once you know the basics of what they are and how they work you are well on your way to breaking your dependence on fossil fuels for your electrical needs. You can start to take advantage of free energy from the sun, and you can start reducing your monthly energy bill.

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