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Wind power is for sure a very prospective alternative for green energy source. If you ever consider to use it to power your house, first thing first please consider the location where you live.

A windmill solution obviously requires wind. To be specific, you will need wind speeds more than 8MPH on average. But even 8MPH is considered a low-wind-speed area for wind turbines. 12MPH average is ideal.

Start your search by checking wind speed charts that fit your area:

If You Live in the USA:  http://www.ncdc.noaa.gov/oa/climate/online/ccd/wndspd.txt If You Live in Canada: http://www.wunderground.com/global/Region/CN/WindSpeed.html If You Live in the UK or Europe: http://www.xcweather.co.uk If you live in Australia: http://www.wunderground.com/global/Region/AU/WindSpeed.html

Assuming that the average wind speed in your area is above 8MPH, then continue on to the other considerations listed below.

If you don’t live in a suitable area, then you should consider a solar power conversion instead.

Wind Turbine Considerations

Once you’ve determined that wind power is suitable for your area there are a few other things you need to consider.  Really this is just about asking some questions and then answering them. Taking the time to do so will ensure you choose a wind power system that fits. Especially if you are planning to live off the grid, you should take the time to answer these questions before you start.

Here are the questions you need to ask yourself:

Your Power Needs

The first thing that needs to be considered is your power needs. Are you simply looking to reduce your power bill with a single small windmill? Or, will you want to power your entire home?
If you’re looking to power your whole home, you should take the time to calculate your actual power requirements. If you take the time to download Earth 4 Energy, their guide comes with a calculator and instructions on how to do this (you’ll need this guide anyway).

Storing Power from Wind Turbines

After answering your first question you then need to consider building a storage system for your wind turbine. A simple array of batteries can be designed to store as little or as much power as needed.
If you’re only building a small wind power solution to reduce your power bills then this is likely less of a concern.
On the other hand if you’re looking to live off the grid, you will need to consider energy storage. You should use your calculation for your power needs to design this part of your system. Take into consideration how much power you will need to store and for how long.

If you have weeks where there is less wind than usual, ensure that you have a large enough battery array to compensate (or better yet work to reduce you energy needs by using high efficiency bulbs and appliances).

Having a Backup Plan

Finally, for those who plan to live entirely off the grid, you should consider your backup plan. For most of us consistent power is a requirement. Ensure that you design your wind turbine solution with a backup plan. Generally a small gas generator is enough to ensure you have power if something goes wrong.  

You might want to check more to guide you step by step on converting to green energy with this green-power easy guide, the so far best DIY green power available.

Originally posted 2010-01-25 16:42:23. Republished by Old Post Promoter

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This article will describe how solar energy is created and cover some of its basic principles.

Solar energy is created by light and heat which is emitted by the sun, in the form of electromagnetic radiation.

With today’s technology, we are able to capture this radiation and turn it into usable forms of solar energy – such as heating or electricity.

Although one could go into technical dissertations on the subject of electromagnetic radiation, how it is converted into solar energy, and the exact qualities of its electromagnetic rays, this is not something the average person needs or wants to know.

But in order to be able to benefit from the use of solar energy, there are a few facts you should know. Knowing these facts can assist you to make a sound decisions, when looking at the use of solar power as a clean energy source for your home, RV, or whatever the case may be.

Available Solar Resource

The technical feasibility and economical viability of using solar energy depends on the amount of available sunlight (solar radiation) in the area where you intend to place solar heaters or solar panels.

This is sometimes referred to as the available solar resource.

Every part of Earth is provided with sunlight during at least one part of the year. (I say “part of the year” as the north and south polar caps are each in total darkness for a few months of the year.) The amount of sunlight available is one factor to take into account when considering using solar energy.

There are a few other factors, however, which need to be looked at when determining the viability of solar energy in any given location. These are as follows:

Geographic location Time of day Season Local landscape Local weather

Because the Earth is round, the sun hits its surface at different angles, at different locations on the globe. This ranges from 0º (just above the horizon – a good example of this is the north pole during the winter) to 90º (directly overhead, at and near the equator).

When the sun’s rays are vertical (directly overhead), the Earth’s surface gets a maximum of solar energy. The more slanted the sun’s rays are, the longer they have to travel through Earth’s atmosphere before reaching the surface (becoming more scattered and diffuse as they go along).

The more scattered and diffuse the sun rays are, the less concentrated the solar energy is. Because of the fact that the Earth is round, the polar regions never get direct sunlight, and, during their respective winter months, they receive no sun at all.

The Earth travels around the sun, in an elliptical orbit. Because of its elliptical path, the northern hemisphere of the Earth is closer to the sun during one half of the year, and the southern hemisphere is closer during the other half of the year.

When one part of the Earth is closer to the sun, it receives more concentrated solar energy. This is the time of year that is referred to as “summer.”

But regardless of summer or winter, the 23.5º tilt of the Earth’s axis plays a larger role in determining the amount of sunlight striking Earth at a particular location. The Earth’s tilting results in longer days in the northern hemisphere during one half the year, and longer days in the southern hemisphere during the other half of the year.

Areas such as the United States and Europe receive more solar energy between May and September – not only because days are longer, but also because the sun is almost directly overhead during this season. The sun’s rays are far more slanted during the shorter days of the winter months. Cities such as Denver, Colorado, receive nearly three times more solar energy in June than they do in December.

Diffuse and Direct Sunlight

As sunlight passes through Earth’s atmosphere, some of it is absorbed, scattered, and reflected.

The following is a general list of materials which cause the sunlight to become diffused:

Air Molecules Water vapor Clouds Dust Pollutants

Sunlight affected in this way is referred to as diffuse solar radiation or diffuse sunlight.

Sunlight that reaches the Earth’s surface without being diffused is called direct beam solar radiation or direct sunlight.

The sum total of all diffuse and direct solar radiation in a given location is called global solar radiation. It is the total amount of sunlight hitting the Earth at any specific spot, both direct and diffuse combined.

Pollution and other atmospheric conditions (such as weather patterns) can reduce direct sunlight by 10% on clear dry days. They can reduce direct beam radiation by 100% on thick, cloudy days.

Note that the absence of direct sunlight does not imply total darkness, as some diffuse light will still get through.

Measuring Sunlight and Solar Energy

Scientists measure the amount of sunlight available in specific locations during the different times of year.

They are then able to estimate the amount of sunlight which falls on similar regions at the same latitude with similar climates and conditions.

Measurements of solar energy are normally expressed as “total radiation on a horizontal surface”, or as “total amount of radiation on a surface tracking the sun”.

In this last case, the assumption is that one is using a solar panel that automatically tracks the sun.

In other words, the solar panel would be mounted on a tracking device so that the panel would remain at right angles to the sun throughout the day.

This system is primarily used for industrial setups, when it is used at all.

Solar Energy Measurements

Radiation data (the amount of solar energy available at a given location) for solar electric (photovoltaic) systems is often represented as kilowatt-hours per square meter (kWh/m2). Direct estimates of solar energy may be expressed as “watts per square meter” (W/m2).

Radiation data for solar water heating and space heating systems is usually represented in British thermal units per square foot (Btu/ft2).

Originally posted 2009-11-06 17:34:56. Republished by Old Post Promoter

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“SOLAR ENERGY”

by

Farooq Raza Qadri

            Today in Pakistan we are facing shortage of almost every basic need of life like water, gas, and especially electricity. It is the worst conditions we are facing now a days. The reason for that is…well we all know “THE REASONS” don’t we!!! Few days back I was reading an article in a local newspaper which was about getting electricity like many European countries which is from “Wind Turbines”. It’s a very good idea and we must have to think other ways of energy to meet our needs. Another idea which I’m going to discuss here is “SOLAR ENERGY”.  As we all know that summer season is longer than winter in Pakistan. So it means we can get more and more sunlight. In my view Solar Energy Systems will be more successful in Pakistan than any European country because thankfully we can have more sunlight than Europe. Many scientists and engineers from all over the world are working in this field. Some say that it’ll be very costly, YES it’ll be but only in start as like everything when it’s new its price is high but when the competition arises then prices goes down its simple economics. We’ve used the Sun for drying clothes and food for thousands of years, but only recently have we been able to use it for generating power. The Sun is 150 million Kilometers away, and amazingly powerful. Just the tiny fraction of the Sun’s energy that hits the Earth (around a hundredth of a millionth of a percent) is enough to meet all our power needs many times over. In fact, every minute, enough energy arrives at the Earth to meet our demands for a whole year – if only we could harness it properly and preserve it.

            Here are some techniques that are being used in many parts of the world to get energy from the sun light.

Solar Cells (really called “photovoltaic” or “photoelectric” cells) that convert light directly into electricity. In a sunny climate, you can get enough power to run a 100W light bulb from just one square metre of solar panel. This was originally developed in order to provide electricity for satellites, but these days many of us own calculators powered by solar cells. Solar cells provide the energy to run satellites that oribt the Earth. These give us satellite TV, telephones, navigation, weather forecasting, the internet and all manner of other facilities

Solar water heating, where heat from the Sun is used to heat water in glass panels on your roof. This means you don’t need to use so much gas or electricity to heat your water at home. Water is pumped through pipes in the panel.
The pipes are painted black, so they get hot when the Sun shines on them. This helps out your central heating system, and cuts your fuel bills. However, in very cold places especially in winter season you must remember to drain the water out to stop the panels freezing. Solar heating is worthwhile in places like California, Australia, South East Asia (Pakistan, India, Bangladesh) where you get lots of sunshine as I mentioned it earlier.

Solar Towers One idea that is being considered is to build Solar Towers. The idea is very simple – you build a big greenhouse, which is warmed by the Sun. In the middle of the greenhouse you put a very tall tower. The hot air from the greenhouse will rise up this tower, fast – and can drive turbines along the way. This could generate significant amounts of power, especially in countries where there is a lot of sunshine and a lot of room, such as Australia.

Advantages

Solar energy is free – it needs no fuel and produces no waste or pollution.

In sunny countries, solar power can be used where there is no easy way to get electricity to a remote place.

Handy for low-power uses such as solar powered garden lights and battery chargers

Disadvantages

Doesn’t work at night. (Positively thinking it’ll cut our huge fuel and energy bills into half if we even have the solar energy system in day time. So that’s make it a negligible disadvantage.)

Very expensive to build solar power stations.
Solar cells cost a great deal compared to the amount of electricity they’ll produce in their lifetime.

Can be unreliable unless you’re in a very sunny climate. In the United Kingdom, solar power isn’t much use except for low-power applications, as you need a very large area of solar panels to get a decent amount of power. However, for these applications it’s definitely worthwhile.

Is it renewable?

Solar Power is renewable. The Sun will keep on shining anyway, so it makes sense to use it.

            Why “THE PROFESSIONALS” from Europe and America etc. I’ll suggest that to lower the cost we should use our own manpower which is cheaper and hardworking. By the Grace of ALLAH we are Blessed with everything in our country like skilled manpower, raw material and especially more and more SUN LIGHT!!! As I mentioned earlier Europe like UK and many other countries are facing problem with less sun light but By the Grace of ALLAH we don’t have to face it. We just need good management of these things and work with diligence. INSHALLAH we’ll be successful. Pakistan will be successful. LONG LIVE PAKISTAN!

Originally posted 2010-01-05 16:24:48. Republished by Old Post Promoter

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In 1859, Charles Dickens famously penned the opening lines to “A Tale of Two Cities”: It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness, it was the epoch of belief, it was the epoch of incredulity, it was the season of Light, it was the season of Darkness, it was the spring of hope, it was the winter of despair…

Dickens was not, of course, referring to the outlook for the renewables sector in 2009, but he easily could have been. The outlook for the renewables sector is a remarkable juxtaposition of a rosy future and a grim present. On the one hand, the growing public and political consensus around the dangers of climate change coupled with the rousing endorsement from Congress in the broad renewables tax package enacted in October 2008 all bode well for the sector. On the other, the dramatic downturn in the financial sector suggests that obtaining project-level financing is going to be tough sledding throughout 2009.

This “best of times, worst of times” dynamic suggests the coming year may well be the year that the renewables sector proves its mettle to the market, showing remarkable resilience in the face of extreme financial uncertainty. To do so, it will need a little help from Capitol Hill— and Congress may well deliver.

Prospects for Climate Change Legislation in 2009

During the 2008 presidential campaign, President-Elect Obama endorsed a cap-and-trade program as the preferred approach to reduce global greenhouse gas emissions. Likewise, both the House and the Senate are poised to resume consideration of various cap-and-trade proposals early in 2009. While many economists, including the Congressional Budget Office, prefer the simplicity of a carbon tax, most observers believe that a cap-and-trade system is the most likely political outcome.

If a cap-and-trade regime is inevitable, the next question to ask is when it might be enacted. The answer to this question depends largely on the health of the economy. Many believe that the Obama Administration will be reluctant to burden an already soft economy with the higher energy prices that a cap-and-trade program would almost certainly bring. If the economy remains mired in recession throughout 2009 and 2010, comprehensive climate change legislation could be shelved until a possible Obama second term.

Renewable Energy & Energy Efficiency

If comprehensive climate change legislation is tabled for the short term, it seems likely that Congress and the Obama Administration will redouble efforts on more narrow policy goals or regulatory reforms that have long been at the forefront of environmental policy in the United States. Indeed, the appointment of Ken Salazar as Secretary of the Interior; Carol Browner as head of the newly formed National Energy Council; and appointments at the Environmental Protection Agency, the Department of Energy (DOE), and other agencies all point to a determined effort to chart an aggressive course on environmental policy. In particular, the likelihood for a federal renewable energy standard (RES) is enhanced by the convergence of large Democratic majorities in both chambers of Congress and a Democrat in the White House. President-Elect Obama was supportive of a federal Renewable Portfolio Standard throughout the presidential campaign, and the House of Representatives passed a similar RES on several occasions. The Senate, long a stumbling block to this legislation, will have a decidedly greener point of view in the incoming Congress.

The most recent House version of an RES, in H.R. 6899 from the 110th Congress, likely represents the jumping- off point for legislative efforts in the 111th Congress. Interestingly, that version allows for energy efficiency measures to be treated as qualifying under the RES standard. This would bode well for energy efficiency technologies, particularly in the Southeast where other renewable resources appear to be less abundant.

Likely, other areas to be considered will be modified Corporate Average Fuel Economy standards for the automobile industry and new and more flexible tax credits for clean and alternative energy. Likewise, the incoming Obama Administration had pledged to invest billions of dollars in infrastructure including areas such as smart grid, biofuels pipelines, and mass transit. This infrastructure spending could be authorized quickly in 2009 in the promised economic stimulus bill currently under consideration by House and Senate leadership. The stimulus bill could also include large grants, tax incentives, and other authorizations for renewable energy and energy efficiency projects and technology.

The Future of Renewable Energy Tax Incentives

To date, the principal approach to encouraging renewables development in the United States has been through the tax code. The production tax credit (PTC) has helped fuel remarkable increases in U.S. wind generation in recent years. Likewise, the energy investment tax credit (ITC) is largely responsible for the current boom in the solar sector. The same can be said of renewable energy tax credits for biofuels, biomass, geothermal, fuel cells, hybrid automobiles, and so on.

This approach has worked well… until now. The rapid decline of the financial sector throughout 2008 has all but eliminated the erstwhile renewables financiers from the marketplace. Even those financial institutions that still have cash on hand often have current financial and tax losses, making tax credits all but useless. Without these traditional sources of project-level financing, many planned wind, solar, and other renewables projects may never get beyond the planning phase.

It is against this backdrop that Congress is considering a revision of renewables tax incentives to make them more effective in the current financial climate. Congress will likely revisit energy tax legislation in 2009 to, at a minimum, extend the production tax credit for wind that expires on December 31 of that year. While considering that extension, Congress has indicated that it will consider making the PTC and possibly the ITC refundable. Unlike the current-law tax credits, the holder of a refundable tax credit need not have a tax liability to capture the value of the tax credit. Rather, the holder of the tax credit can apply for a refund from the federal government in an amount equal to the credit.

This approach would allow developers and project investors who do not have sufficient tax liability to capture the value of the tax credits to nevertheless do so in the form of refunds from the federal government. This change could significantly expand the universe of potential project investors from the handful (that have both the capital on hand and the tax liability to utilize the project tax credits) that exist today. Such an approach, if enacted, would push the United States a step closer to the feed-in tariff approach so common in Europe. One lingering complexity to be resolved is whether the accelerated tax depreciation (five years for wind and solar projects) would be refundable as well. On the one hand, this accelerated cost recovery represents a sizeable portion of the tax benefits that attract investors. On the other hand, Congress may be reluctant to set a precedent for other industries that depreciation and cost recovery can be a refundable item.

An alternative proposal put forward by the incoming Obama Administration would allow claimants of renewable energy tax credits to carry them back to the preceding five tax years. This would allow these project developers and investors to wipe out taxes paid in earlier years and claim a tax refund from the federal government. While this approach is likely to be helpful to many potential investors, it is unlikely to have the broader stimulus effect of a generally refundable credit.

Meanwhile, it seems likely that other industries will enter into the renewables tax financing market. In particular, public utilities appear to be a good choice to take up some of the slack. As regulated companies, utilities tend to have both cash and tax liability. In addition, the renewable energy sector is a natural fit for the core competency of these entities. Utilities know project development, power purchase agreements, transmission interconnects, and other fundamentals around power production (even if the underlying technology is new to most traditional utilities).

Conclusions

Despite momentum in public opinion, political circles, and discussions among strategic investors, the renewables sector faces a challenging year like most sectors of the economy. While comprehensive climate change legislation may have to wait for firmer economic footing, other help may be on the way. A federal RES would create demand for renewables on a national basis. This coupled with revamped refundable tax credits could shake loose project-level investment that has been lacking in recent months. These legislative changes could change the outlook from “A Tale of Two Cities” to another great Dickens book: “Great Expectations.”

This article was first published by the KPMG Global Energy Institute in 2009 prior to the enactment of the American Recovery and Reinvestment Act of 2009. It is reprinted here with permission of the publisher.

About the KPMG Global Energy Institute This article is provided by the KPMG Global Energy Institute. The Institute’s goal is to provide an open forum where industry financial executives can share knowledge, gain insights and access thought leadership about global energy industry issues and emerging trends. To access a regularly updated library of thought leadership, video and audio Web casts, podcasts and conferences and events, please visit http://www.kpmgglobalenergyinstitute.com/.

Originally posted 2009-11-17 18:34:44. Republished by Old Post Promoter

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Fuel prices went as high as $15 per thousand cubic foot as compared with previous years’ $5-$7 averages. This trend has alarmed various groups- like economists and environmentalist– and are now promoting energy and environmental advocacies. With the cost (and pollution levels) of traditional energy sources such as burning coal and other burnt resources being powerfully high, countries are forced to look at other, more reusable energy sources to meet their needs. Wind energy is cited to be one of effective alternative.

The use of alternative energy like wind energy has significantly increased in the present days. In fact, in South Africa, residential wind energy system is gaining popularity and usage. Wind energy is also being harnessed in places in Europe and North America.

Majority of forms of wind power generation are used by the people of Europe. Once the government gets fully on board with wind energy, it can certainly be a huge potential source of electricity for the entire country. Other countries in Europe are beginning to take notice as well, with estimates that over 50 million consumers could be obtaining wind powered electricity in the next 10 years.

Equipment Used In Wind Power Generation

We have what we call, shaft. This shaft actually creates the energy that is then stored or converted into electricity. Wind turbines turn with the wind, and then this turning generates enough momentum to charge energy storage cells (such as batteries).

Advantages Of Harnessing The Wind Energy:

1. Wind energy is also absolutely renewable, as it uses no fuel or other resources that can be expended.

2. If you are considering going green, wind is an energy model with a lot of positives.

3. Wind energy is cleaner, cheaper and more reusable than many of the current sources of energy used in this country.

Some Reason For Harnessing Wind Energy:

1. The bigger issue is getting them to generate enough energy at as low a price as possible to develop them a viable energy production platform.

2. Wind energy is available in practically any country, which means no reliance on foreign sources.

3. There are a number of reasons why wind power is part of our energy solution.

Generating Wind Power From Wind:

This process is natural and simple, but produces a outrageous amount of energy. This process is similar to hydro power with wind being used instead of water. We then transform it into usable electricity by catching it with wind turbines.

Some Tips For Generating Wind Energy:

1. Given this situation, ideal areas for wind farms are often along shorelines or in valleys funneling winds from the shore.

2. Shorelines serves fertile wind generation areas.

3. As a surface heats up, the air rises and cooler air rushes in to replace it.

Originally posted 2009-11-06 17:35:21. Republished by Old Post Promoter

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Many people today have realized the dream of being completely off the grid by combining wind and solar energy. Small sized affordable wind generators are available today for the home user, and they are being combined with photovoltaic cells for power generation. It’s obvious that fossil fuel energy costs are going to keep on rising making it harder to afford getting power from the grid. The time is more than ripe for solar wind energy to be one of the solutions to rising energy costs, and to take us off of fossil fuel energy dependence.

Wind Turbines

Wind turbines are actually very simple machines. They consist of 3 parts: rotor blades, a shaft, and a generator. The rotor blades act like a propeller that turns the shaft when the wind flows through them. The shaft then turns the generator and a current is generated. About eighty-five percent of all off-grid systems use solar wind energy.

The new micro as well as mini wind turbines are very popular with sailors, and are now starting to be more popular with home owners in Europe and the UK. Mini turbines are very cost effective and will only cost about $1,500 to $2,500. They are perfect for generating electricity if you live off the grid in remote rural areas. It’s satisfying to think about having solar wind energy provide for all your energy needs and also knowing that you never have to depend on utility companies.

Photovoltaic Cells

The typical home solar power system consists mainly of these:

a)Photovoltaic Panels

b)Charge Controller Module

c)Batteries (optional)

d)Inverter

Photovoltaic panels convert sunlight into an electric current. The type of current generated by a photovoltaic panel array is DC or direct current. For this current to be usable in most common households, it has to be converted into AC or alternating current. That’s where the inverter comes in. It’s job is to convert DC into AC current.

Solar wind energy systems are also called hybrid energy systems because the use a combination of solar and wind power to generate electricity. The wind turbines are mostly used during the winter months (in the northern hemisphere) when the sun’s vertical rays are mostly directed toward the southern hemisphere, and days tend to be short and cloudy. During summer months, photovoltaic cells would supplement greatly along with the wind turbine.

By using hybrid solar wind energy systems, a homeowner has the option of using or omitting batteries for storage. Homeowners also have the choice of being “Grid-Tied” or “Net Metered”. This means that your solar wind energy system has the ability to provide electricity not only for your house, but the power company as well. This way, if your solar wind energy system generated more energy than was used, the energy can be sold back to the power company. When you’re selling energy back to the company, your power meter runs backward. The “net metered” system therefore is highly recommended. The grid also works as your “battery backup” when your hybrid solar wind energy system doesn’t provide for your power demands.

Net-metered systems are also recommended because they are easier to install, cost less, and offer better performance.

Originally posted 2009-11-10 18:37:59. Republished by Old Post Promoter

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We have been using the energy of the wind for thousands of years. There were boats propelled by wind sailing along the Nile River in 5000 B.C. By 200 B.C., there were simple windmills in China pumping water. At the same time Persian were using vertical-axis windmills with woven reed sails to grind grain.

People continued to find new ways of using the wind energy. By the 11th century, people in the Middle East were using windmills extensively for food production;crusaders and returning merchants brought this idea back to Europe. The Dutch adapted the windmill and used it for draining lakes and marshes in the Rhine River Delta. When conquerors took this technology to America in the late 19th century, they began using windmills to pump water for farms and ranches, and later, to generate electricity for homes and industry.

However,industrialization, in Europe and later in America led to a gradual decline in the use of windmills. People stated to use steam engines rather than windmills. In the 1930s, the Rural Electrification Administration’s programs brought inexpensive electric power to most rural areas in USA.

Industrialization did not only led to the decline of using windmill but also sparked the development of larger windmills to generate electricity.The earliest wind turbine appeared in Denmark in 1890. In the 1940s the largest wind turbine of the time began operating on a Vermont hilltop known as Grandpa’s Knob. This turbine, rated at 1.25 megawatts in winds of about 30 mph, fed electric power to the local utility network for several months during World War II.

The popularity of using the wind energy has always changed with the price of fuels. When fuel prices fell after World War II, interest in wind turbines waned. But when the price of oil raised in the 1970s, the interest in wind turbine in the world also increased a lot.

After the oil embargoes of 1970s,new ways of converting wind energy into useful power are introduced. Many of these approaches have been demonstrated in “wind farms” or wind power plants groups of turbines that feed electricity into the utility grid in USA and Europe.

Today, the lessons learned from more than a decade of operating wind power plants, have made wind-generated electricity very close in cost to the power from conventional utility generation in some locations. Wind energy is the world’s fastest-growing energy source and will power industry, businesses and homes with clean, renewable electricity for many years to come.

If you want to learn more about wind turbine, visit the following site.

http://www.GreenEnergy4Home.com

Originally posted 2009-11-08 20:28:37. Republished by Old Post Promoter

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Solar energy consists of the light and heat emitted by the sun, in the form of electromagnetic radiation.

With today’s technology, we are able to capture this radiation and turn it into usable forms of solar energy – such as heating or electricity.

Although one could go into technical dissertations on the subject of electromagnetic radiation, how it is converted into solar energy, and the exact qualities of its electromagnetic rays, this is not something the average person needs or wants to know.

But in order to be able to benefit from the use of solar energy, there are a few facts you should know. Knowing these facts can assist you to make sound decisions, when looking at the use of solar power as a clean energy source for your home, RV, or whatever the case may be.

Environmental Facts about Solar Energy 

All life on earth is dependent upon solar energy. In fact, without solar energy, there would be no life at all. Even the lowest life forms, such as plankton and microbes, need solar energy (in the form of sunlight) in order to survive.

Solar energy is completely environmental friendly, producing absolutely no carbon emissions or other harmful byproducts whatsoever.

Solar energy can be used successfully and cost-effectively just about anywhere on the planet. You do not need to live in a tropical or desert climate in order to benefit from the use of solar energy. Solar power has been used successfully in many cold climates and even in the polar regions.

Every area of the United States of America receives enough sunlight to benefit from and make use of solar energy and solar technology.

Currently, the cheapest and most effective way of using solar energy in your home is through the use of solar water heating systems. In fact, solar water heating systems have been commercially available in the United States for over a 100 years.

Solar energy can be used for heating homes effectively in cold climates, as well as in warm climates. In fact, for decades now, solar heating has been in use several cold-climate northern European countries.

Solar energy technology has advanced to the point where it can be now be a viable and cost-effective replacement for regular grid-electricity.

Solar energy is rapidly increasing in popularity – so much so that the demand for solar-powered gadgets is currently greater than the supply.

Facts about Solar Energy Usage

Solar energy can be used to provide electricity, heating and hot water for homes.

Solar energy can also be used to heat swimming pools. Many pools in Scandinavia and Europe are in fact heated with solar energy.

Solar Energy can be used to power vehicles, such as solar powered cars, and even a solar powered airplanes. NASA has successfully designed, built, and tested an airplane which is powered wholly by solar energy.

A few examples are: solar battery chargers, solar flashlights, solar calculators, solar radios, solar-powered attic fans, solar power backpacks (to recharge batteries for small devices), hybrid solar chargers (for cell phones, satellite phones, and more), solar-powered garden lights … and much, much more.

Originally posted 2009-11-08 16:41:29. Republished by Old Post Promoter

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1. Solar Energy: Technical Facts
2. Facts about Renewable Solar Energy
3. Solar Energy – Basic Principles

Global Wind Energy Market Analysis and Forecasts to 2012 Report ( http://www.bharatbook.com/Market-Research-Reports/Global-Wind-Energy-Market-Analysis-and-Forecasts-to-20121.html ) provides a detailed analysis of current global wind energy installations as well as the forecasts of worldwide wind energy installed capacity until 2020. The report details historical and current statistics relating to wind energy installed capacities and their growth scenarios until the year 2020. It also provides an analysis of the historical and forecast growth of installed capacity, and the market structure and regulatory policies that govern the world’s key wind power countries. The report further includes information relating to the important cost, technological, market, and research and development (R&D) trends on a global basis. It also analyzes the wind power deals that have taken place over the years and gives detailed profiles of the top five market players for each of the sub-sectors in the global wind energy industry.
 

The report facilitates market analysis and forecasting of future wind energy industry trends. It helps identifying growth segments and opportunities in the energy industry. The news and deals portfolio provided in the report helps an investor to gauge the global wind energy market and accordingly direct their investment.
 

Of the available renewable energy sources, wind is the most established commercial generating technology with highly effective and reliable equipment and machinery. It has observed tremendous growth, with the total installed capacity augmenting from 23,900 MW in 2001 to over 121,013 MW in 2008, reflecting an annual growth rate of 26% for the 2001-08 period.
 

Annual Wind Energy Installations to be Impacted by the Financial Crisis

The current financial crisis is severely affecting the growth of wind energy globally. The global wind energy industry is witnessing many cancellations of turbine orders, freezing up and sale of wind farms, and difficulties in securing financial aid for new projects. The worldwide annual wind energy installations will trickle down by more than 15% in the years 2009 and 2010, as against the growth rate of 35% in the new installed capacity of 2008. This will further result in a dip in the demand for wind turbines.
 

Increasing Mergers and Acquisitions to be the Outcome of Financial Crisis

Wind farms are capital-heavy projects with significant up-front investment that can be financed only by large utilities and investment groups. The critical short-term challenge faced by most wind power developers is financing, particularly for under development projects. The economic downturn, resulting in the failure of some of the world’s largest investment banks, has led to an increase in the cost of capital for wind energy projects. Against this backdrop, only a few large wind power companies will be in a position to pursue their project development plans. Shortage of financial resources with smaller players would give an opportunity to the big giants to takeover or form alliances with such companies, thereby increasing the level of consolidation in the wind energy industry.
 

Strong Growth Prospects of the Offshore Wind Energy Market

The offshore wind energy market is attracting investors in the wind segment. The global offshore cumulative wind energy installed capacity has increased from 86 MW in 2001 to 1,475 MW in 2008. Most of this capacity is predominantly concentrated in the European region. Currently, there are nearly 5 GW of new offshore wind energy projects in the development phases in Europe. The US has also planned to develop over 2,320 MW of offshore wind power projects, while China has 520 MW of offshore capacity under construction or in planning. Increasing focus on the offshore wind energy sector is principally because of the greater power generation potential at such locations. Offshore sites are also suitable for wind power generation because there is no space constraint. Additionally, offshore wind projects offer multi-fold advantages i.e. large wind turbines can be installed at the offshore sites because of the greater wind speed, thereby enabling it to generate more units of power.
 

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Originally posted 2009-11-05 17:24:00. Republished by Old Post Promoter

Related posts:

1. Bharatbook : Impact of Financial Crisis on Wind Energy Installations Globally – Analysis and Forecast
2. Bharatbook.com : Global and China Offshore Wind Energy development
3. China To Lead Global Wind Energy Development