We in EnergyBeta provide you information and free downloads on renewable energy and related topics. Our mission is to spread the use of renewable energy in a global scale. We cover topics from general renewable energy concepts to the different types of renewable energy, like solar power, wind power, geothermal power, and ocean energy including tidal power. You can simply browse our articles by following the links to your right. You will also find articles related to different technologies related to alternative energy and some articles on new ideas.

Below is a brief introduction to Renewable Energy and Few Renewable Energy sources.

Solar Power

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Sun is our main energy source. Solar power will not end, or in another sense, we will not live to see the end of our sun. Solar energy is one of the most important sources of renewable energy. It sends us unimaginable amount of power everyday hidden in its rays.

According to research data currently available, the Sun radiates 174 Petawatts (Pw) of solar energy every day. Out of this roughly 30% of energy is reflected back to space, and another major share is absorbed by our atmosphere. Even if we get only 10% of this energy which is about 17.4 Pw per day, it is still more than the whole daily energy requirement worldwide.

Do you want to learn more about Solar Power? Visit our Solar Power Section. You can also download the Renewable Energy Guide for more information 100% free. This eBook covers the subject of solar energy in more detail.

Wind Power

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Wind energy has been converted to other forms of useful energy, especially mechanical form even long time back. Energy stored in Wind is used to turn a windmill and then to used to grind grains and other stuff.

Unlike solar power, wind energy is always present, day and night alike. This is a very important advantage of using wind power. Wind power is comparatively cheap to produce. It takes little space when compared with solar panels. Today Europe, especially Germany is leading the way in Wind energy.

There are number of ways to use the power of wind. The wind mill is the common choice. Nowadays windmills are almost always used to produce electricity. If you want to learn more about wind energy visit our wind energy archive. Our free eBook renewable energy guide has a complete section on using wind energy. You may download it for free, by following this link.

Hydro Power

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Just like Wind Power, people from ancient world knew how to use the power of flowing water to do something useful.

like turning a waterwheel and grinding their grains. Hydropower today though is mainly discussed with electricity generation. There are thousands and thousands of dams built around the world to convert energy stored in water flow into electricity.

Unlike, solar or wind, hydropower is more stabilized. Most countries use hydropower in big scale to produce electricity and achieve some other benefits is create like irrigating the lands and controlling floods. Currently micro hydro plants are gaining in popularity. Small hydroelectric plants are used to power up small communities.

You need higher capital investment to build a hydropower plant though. But hydroelectric plants are very much cost effective to operate in long run. More information about hydropower can be found here on our archive. We have a dedicated section on hydropower in our free eBook the renewable energy guide. You can download this eBook 100% free by following this link.

Geothermal Power

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Earth crust is heated and its molten rocks forms lava. This heat is a great energy source. Earth’s heat is available regardless of the place, and it is available 24 hours a day and 7 days a week. This makes geothermal energy a great reliable renewable energy source.

Obviously, building geothermal power plant will cost more, as it is little complex to build. But it works almost on autopilot. Only little maintenance is needed. This makes the operational costs of the plant low.

Iceland is the leader in geothermal energy. Nearly 18% of their energy comes from geothermal while US has a great potential too. You can read more about geothermal energy here. Renewable energy guide contains very informative section on geothermal energy. You can download the eBook 100% free by following this link.

Biomass

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Biomass is the most commonly used source of renewable energy. Even the ancient man knew how to use wood to cook their food using firewood. But today, biomass energy mainly refers to burning or using materials like wood and different types of seeds to produce electricity.

Biomass has created a separate market by substituting the traditional oil with the biofuel or biodiesel. This energy sector is becoming. Ability to make your own biodiesel in your own backyard is another reason for the resent popularity behind biodiesel.

There are diverse opinions about using biomass excessively. We have discussed them on this site as well as on the renewable energy guide. You can see our biomass section for more details. You can download our free eBook renewable energy guide for even more information.

Tidal Energy:

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Tides are a great source of renewable energy. Tides are created due to gravitational pull of earth, moon and sun. This is a complex natural behavior. Rising water levels provides a great opportunity to generate reliable renewable energy.

Unlike other sources, tidal waves can produce large amount of electricity with a high degree of reliability. This makes tidal energy a key competitor in commercial renewable energy sector. Building a tidal renewable energy plant needs large sums of capital. Also the technology is costly and relatively new.

Tidal waves are only one form of ocean energy. There are other ways we can use the vast amount of energy hidden in the oceans. These are discussed in our free eBook renewable energy guide. You may download this by following this link. You can learn more about the tidal waves by reaching our tidal energy archive.

There are more renewable energy sources emerging. But what listed above are more stable technologies.

In summary, we have many options open to go green with renewable energy. We can save lots of money if we tap into these alternative energy sources. In addition we will find solutions for the global environmental problems we are facing today.

Today, we have an option to use these alternative sources to produce energy. But tomorrow, we will not have an option; we will have to optin to renewable energy sources whether we like it or not. Ever decreasing oil and coal reserves and environmental crisis we are facing even today will leave us no other option. So act today, go green.

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At present the state of the planet is of huge concern, the environmental crisis is certainly spurring on some amazing innovation in the field of renewable energy systems. The truth of global warming demands that we aggressively pursue innovative methods to produce clean affordable energy while restoring our environment’s health. Solar power and wind power are the two main available sources of power on our planet. Both are renewable energy sources and are abundant all year round in all areas, but still produce less than 5% of the world’s electric power.

We are now capable to combine the most powerful and abundant forces of nature, available to all of us every day. Take for example this very interesting device – a vertical axis wind turbine embedded with solar cells. So if the sun’s shining, but the wind is not blowing you’ve still got juice; and vice-versa. If you have both that is even better.

Although solar power or wind power alone can fluctuate but when used together they provide a reliable source of energy. In many areas once the sun is strongest the wind speed is low and while the wind speed is highest the sun is often the weakest as in winter. The ideal solution is to join these two forms of energy sources to create a constant energy flow. This hybrid system balances out the fluctuations in these powers to give a more smooth flow.

A German company has created the first integrated solar vertical axis wind turbine. The company, Bluenergy AG, based their design on sailing engineering. Elements Projected to Comprise the First Generation Bluenergy Solarwind™ Turbine are:

1. Solar cell Encapsulation technology: Solar cells are covered by layers of pure fluoropolymer (a clear film) in spite of standard glass or aluminum. In order to increase the efficiency of the solar cells, the cell’s surface has a Dendrite system which absorbs the sun light from all angles.
2. Double-helix shaped Wind Vanes:  The wind rotor is rotated by two spiral-formed vanes. According to the site, the installation costs comparatively little, produces no noise and can be easily maintained from ground level.
3. Generator: The generator has rare earth magnets functional on its rotor, providing high efficiency. The fixed winding of the rotor is constantly activated through these magnets, so that the generator straight away delivers power even at low revolutions per minute.
4. Inverter: The inverter merges the solar electricity and wind generated electrically into one current. The output is standard AC current.
5. Bearings: The Turbine Axis: The axis is a hollow, re-enforced steel pole, using a double frictionless bearing system to reduce resistance, while increasing efficiency. This unique bearing system permits self-stabilization of the rotating turbine, so that even in very high winds, the heavy material stresses and loads are reduced and remain completely balanced.

How it works

The solar wind turbine generator uses solar panels to collect light and convert it to energy along with wind turbines to collect energy from the wind. Solar wind charge controllers control the charging of the energy before it is stored in the battery banks. An inverter, positioned in the battery bank, alters the current from DC (direct current) to AC (alternating current which is the type of power used in the majority homes and businesses).

Advantages of solar wind turbine:

1. Utilization of wind and sun energy makes it a unique and beautiful design.
2. The device is harmless for people, animals and nature.
3. Uses winds from all directions.
4. Totally noiseless (no sounds besides the wind) because of its spiral shape and the speed of rotation does not exceed the wind speed.
5. It starts charging with very low wind speeds.
6. It does not require shutdown during heavy storms; highest RPMs yield highest electricity output.
7. It requires low maintenance and repair cost.
8. The generator is located in the base on the ground, hence requires easy maintenance, system monitoring, and replacement of all parts.
9. No repairs or replacements at tall heights, as compared to traditional turbines in which propellers and generators are mounted on tall towers.
10. No cranes are needed as it includes Hydraulic up-righting of the turbine from the ground.
11. No operating or fuels costs are needed as both the solar radiation and the winds are provided by Nature.
12. Consistent energy generation throughout the year (during winter from more wind, during summer from more sun)

Facts:

1. Using solar cells on the wind vanes increases the power output of the wind turbine by approximately 30-35% and allows electricity to be made even when the wind is calm.[#1]
2. Both the wind and solar energies are renewable energy sources and are abundant all year round in all areas, but still produce less than 5% of the world’s electric power.
3. Solar wind turbine produces about 50% more electricity than traditional horizontal propeller turbines, higher yield from both low and high wind speeds and from the solar cells.[#2]
4. Solar wind turbine only needs winds of 4mph to start spinning, its power rated for speeds of up to 90mph!
5. In Solar wind turbine, solar cells are cooled by the rotation, maintaining electrical generation efficiency.
6. In Solar wind turbine no gears are needed as contact-free current flows from the rotation of the wind vanes into the generator.
7. The system of Solar wind turbine comes with an inverter in the base that will deliver either 120v or 240v AC into a home or net metered directly into the grid.
8. The Solar wind turbine is harmless for people, animals and nature.
9. Current models of solar wind turbine range in output from 2KW for homes to 8KW for commercial use.[#3]

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The energy crisis caused a considerable growth of interest in alternative sources of energy in the past few years. Among the several energy sources being explored, wind energy which is a form of solar energy, become a significant energy source. If the efficiency of a windmill can be increased, then the dependency on expensive, polluting power generators will be reduced. By doing this, we would be helping the environment and economy at the same time. In order to increase the efficiency, we must analyze the components. The most important components of a windmill are windmill blades.

Factors affecting the performance of windmill blades:

Shape of Blade

This is important because if an optimum blade shape is discovered, then the overall productivity of a windmill can be increased. The shape of windmill blades highly influences their rotation. Few different shapes of windmill blades available are: the flat, rectangular ones, the wing shaped ones and the ones with edges tapered to a thin line or edges rounded similar to the ones of an airplane wing. In the case of the horizontal axis windmills, the wing shape has proved to be the most efficient one. The vertical axis windmills works very well with all the shapes of the windmill’s blades, however the best performance is given by the flat ones as well as the ones with both edges rounded.

Material for Windmill Blades:

Decades ago wood was used to make the windmill blades. Nowadays wood is still used but the design is however different and a lighter wood material is used, to carve the blade and faster speed rotation.
The latest blade design is made of fiber-glass and epoxy resin. Although this blade is in its first stages and not yet marketed, what makes it unique is its curvature like tip which allows it to catch low wind speeds.

However some turbine blades have even been made with the raw material made for PVC piping which have been found to break in strong lengthy winds, but are inexpensive to replace.

The turbine blades made of carbon fiber are light weight, and has a razor sharp edge which allows it to literally cut through the wind and makes it almost silent. This material is preferred and is used in most wind turbine machines sold today.

Length of windmill blades

The length is also an important factor. If a blade is longer, it covers a larger surface while it rotates, hence they can catch more wind with every rotation. This may show the way to more torque. These blades are growing longer from the 30 to 40 meters up to 60 meters.

Number of Blades:

The most important thing to take into consideration when talking about windmill blades is their number. The old ones normally had 4 very heavy blades. Majority of them were use in grain grinding. After that three blades became the most popular. More blades seemed to raise noise and slow down the rotation of the turbine’s propeller formation. After more research was done the perception of using more than three blades was no longer a factor. Currently, the most recent windmills are equipped with two or three blades.

Surface Treatment

This is important since if an optimum surface treatment can be determined, the blades would not only be protected from the elements but also be more productive.

Tip Speed Ratio

The tip speed ratio is very important. The ratio of the speed of the wind and the speed of the blade tips is called Tip Speed Ratio. High efficiency 3-blade-turbines have tip speed of 6 to 7. The tip speed ratio is directly proportional to the windmill’s productivity.

If the efficiency of a wind turbine is improved, then more power can be generated thus decreasing the need for costly power generators that cause pollution. This would also lessen the cost of power for the common people. The wind is factually there for the taking and doesn’t cost any money. Power can be produced and stored by a wind turbine with little or no pollution. If the efficiency of the common wind turbine is enhanced, the common people can cut back on their power costs enormously. Wind energy contributes very little pollution, toxic by-products or greenhouse gasses; it is still a sufficient supplement for non-renewable fuels

Facts

1. Wind energy is one of the lowest-priced renewable sources of energy.
2. Wind energy is the fastest growing section of all renewable energy sources.
3. Wind energy is incredibly exploited in Germany where Germany leads the way with 8750 MW of electrical energy produced from wind energy.[#1]
4. Wind energy is more used in Europe than in America, because of favorable climate conditions and because of USA traditional relying on fossil fuels.[#1]
5. Wind energy is mainly transformed form of the Sun’s energy. Wind energy is airflows created by different air temperatures in different locations. The sun does all these Earthly dynamics. That’s why wind energy is solar energy.
6. If properly developed, wind power could successfully reduce carbon emissions in the US by at least one third every year and help realize a global carbon dioxide reduction of 4% yearly.
7. In 2006, seven wind turbines off the coast of Dublin, Ireland, represent the largest wind turbines in the world with a capacity of 3.6 MW each. By 2009, the largest wind farm is positioned in the US. It is the Florida Power and Light’s Horse Hollow Wind Energy Center, in Taylor County, Texas. It has 421 wind turbines having a capacity of 735 megawatts.
8. In 2005 wind energy generated less than 1% of global energy and generated 58,982 MW worldwide. By end 2008 it measured 27,051 MW. 8% of Europe electricity is derived from wind, well ahead of coal and natural gas. The US is the country with the largest wind energy capacity and China exceeded its 2010 target of 10,000 to reach 12,200 MW.[#3]
9. At the 2004 Wind Energy expo in Hamburg, Germany Danish company LM Glasfiber aired out the world’s longest windmill blade. The blade was 61.5 meters long and weighed in at just less than 18 tons, which as far as 61.5 meter windmill blades go, is extremely light. When three blades are positioned on a windmill they have a rotary diameter of 126 meters. [#4]
10. Wind energy theory was discovered in 1919 by the German physicist Albert Betz and published in his book “Wind-Energie”.[#1]
11. In 1995, the cost of electricity generated from gas and coal was between 3 and 4 US cents per kilowatt-hour, nuclear power cost 10 to 14 cents, wind power was 5 to 7 cents and solar photovoltaic power was 25 to 40 cents. But the price gap between non-renewable and renewable energy is closing. By 2030, wind, solar and biomass power may cost less than fossil or nuclear fuels.[#2]

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The energy sector is greatly responsible for climate change and atmospheric pollution. Wind is a clean and environment friendly source of energy that produces electricity. Its renewable character and the fact that it does not pollute during its operational phase makes it one of the best promising energy systems in reducing environmental problems at global and local levels. However, wind energy, may cause impacts on the environment which should be analyzed and mitigated.

Whisper a name with more than 10 years of knowledge in the field, has been re-engineered and started under the Southwest Wind power family of wind turbines. The Whisper has an all-new appearance having a cast aluminum frame and smooth, quiet operation of the patented “angle-governor” furling design.

Whisper 100

Whisper 100 formerly known as Whisper H40, has been updated with new features and added flexibility for renewable energy system. It provides reliable energy for remote homes, telecommunications sites and rural applications in moderate to extreme environments. Dependable operation by thousands of customers makes Whisper 100 the top selling small wind turbine in its class. The Whisper 100, have 7 ft. (2.1m) rotor diameter and 40 sq. ft. swept area, which makes it rugged enough for extreme environments.

The Whisper 200 also includes a permanent magnet alternator powered with an advanced airfoil, as a result capturing the most energy in its class as compared to other competitive wind turbines. The Whisper will deliver 6.3 KWH per day. The Whisper 200 produces more noise than its Whisper100, but it does produce almost twice the power. The Whisper200 can be installed in just a few hours with no welding, no concrete or cranes.

Whisper 500 formerly H175

Formerly the Whisper 175, the Whisper 500 has a 14-foot (4.26m) rotor diameter providing 175 sq. ft. of swept area. The H500 has been redesigned, including a stronger, larger yaw shaft, new blade stabilizer straps and a third spindle bearing for increased reliability.

The Whisper 500 have a handmade fiberglass and foam core blade used for smooth, high efficiency operation and low wind start-up. It also includes the patented “angle governor” design for quiet operation in high winds, which is an ANGLE-FURL™, an incredibly effective, Whisper quiet, method of protecting the Whisper 500 in high winds and helps in maintaining the maximum output in all winds. The Whisper 500 is an outstanding machine for village power projects, farms, ranches, back-up power and remote homes, and off grid living with large energy demands. This 3000- watt rated turbine will deliver in excess of 500 KWH per month assuming a 12 mph (5.4 m/s) wind.

The Whisper wind turbine towers involve no welding however the largest towers need concrete. These are available in different heights like 24ft, 30ft, 50ft, 65ft and 80ft. All the installations can be done efficiently on the ground. The Whisper tower kits contain anchors, pope materials and power wires.

Whisper Controller and Digital Display

The Whisper 100, Whisper200, Whisper 500 Whisper 100 comes with the new Controller that presents greater reliability and superior control for battery charging. Its compact cabinet design features effortlessly settable voltage regulation points; load dump and load dump isolation from the battery.

Whisper controller protects both wind turbine and battery. It can be installed in minutes and it fits easily inside your battery room. You can add the optional LCD display and you will instantly receive real time data on the performance of your Whisper. The display can be mounted on the controller or up to 1000 feet away, so you can monitor performance in the comfort of your home. You can even add an anemometer to the controller so you can measure wind speed, and compare it to the output from your Whisper.

Facts

1. Offshore wind power plants can deliver seven times the energy as land-based plants.
2. There are three British offshore wind farms having a combined capacity of 210 MW.
3. Wind energy can provide new sources of income to some rural areas having favorable climate conditions.
4. Wind energy use has been growing movement in many countries, mainly in Europe.
5. Wind energy can be shortly the cheapest way to produce energy on the large scale, particularly in areas with suitable climate conditions.
6. Wind energy assures high working reliability, no fuel costs and no pollution.
7. In recent years wind energy has provided for over 20% of the power consumption of Denmark, providing energy for a large number of homes and businesses throughout the country each year.[#1]
8. The National Renewable Energy Labs stated that the Whisper 100 was one of the quietest wind turbines ever tested.[#2]
9. According to the experts, in the United States alone if the 10 windiest states were to fully utilize their available wind sources the energy produced could compensate the entire coal-based power production facilities presently being used and substitute them entirely.[#1]
10. If properly developed, wind power could successfully reduce carbon emissions in the US by at least one third every year and help realize a global carbon dioxide reduction of 4% yearly.[#1]
11. In order to replace all energy consumption needs of the world with wind power production about 13% of all land will need to be developed for wind energy purposes, assuming the placement of six large wind power generators per square kilometer in certain area 80 meters above sea level in order to maximize wind energy potential. This can of course be reduced if we were to rely upon offshore wind energy production facilities as well as onshore ones.[#1]
12. The large commercial wind turbines can be 500 feet high, and generate electricity in a 700 kW to 2.5 MW range. The farm or large yard turbine towers run about 30 to 50 feet in height, and can generate about 10 kW power. Rooftop models lack the height needed to get up into the best wind currents, and they need to be smaller all around to fit in with the overall look of any residence. Obviously they would produce far less energy, but enough to power lighting or small appliances.[#3]
13. Top three nations now producing wind power are Germany, Spain, and the United States. Even in the forward looking US, the power produced is only less than a half of one percent of all electricity produced (2005). And, only half the states even have wind farms. Colorado is one of the leaders in renewable resource energy. The wind mill giant company based in Denmark, Vestas, has recently chosen to locate a new manufacturing plant, with about 1350 new jobs, just outside of Denver, in Colorado.[#3]

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An alternative energy ETF invests in companies which are involved in alternative energy research and production. An alternative energy ETF holds a number of stocks of companies that generate energy from environment friendly resources. Exchange Traded Funds is as compelling an investment theme as you’ll ever come across. These Alternative Energy ETFs are created and marketed just like any other ETF. The only difference is the underlying securities.

As alternative energy ETF is a green investment. With global energy demand growing sharply, oil prices at record highs, climate change concerns growing, and new technologies allowing more proficient power extraction from natural resources, the case has never been better for investing in alternative energy companies that will assist us conquer our oil and carbon-emission addictions. With more and more companies focusing on alternative energy research, the portfolio of these ETFs is becoming increasingly convincing.

Alternative energy research is in the public interest due to two reasons:

1. Depleting natural resources
2. High demand of environmental friendly products

Many companies have by now launched their eco-friendly products in the market and the rest are catching up due to the growing demand for such products. This has opened up new opportunities for investments and alternative energy ETFs are smoothing the progress of their funding and profits for investors too.

Before you buy or sell any investment product you want to be familiar with all the limitations of the asset. Understanding the benefits of ETFs will assist you utilize the right investment strategy when including exchange traded funds in your portfolio. It is equally important to understand the disadvantages of ETFs.

Advantages of Alternative Energy ETFs:

1.Alternative Energy ETFs is a green investment.
2.ETFs are tax-friendly investment. Capital gains taxes are usually lower for ETFs than usual mutual funds due to the structure of each trade.
3.ETFs perform like indexes and pursue certain market sectors. But, not like an index, you can buy an ETF with one single transaction.
4.As there is single transaction per trade, commissions are lower on an ETF as compared to an index, which involves many stocks and multiple trades. Moreover unlike regular mutual funds, there are no load fees and managing fees tend to be lower for ETFs.
5.Alternative energy ETFs are narrower as compared to other ETFs. As the requirement for alternative energy is high, a narrow investment brings in more profits than a diversified one.
6.Alternative energy ETFs is the precise way to diversify your portfolio. The high volatility and demand joined with the prospects make these ETFs the perfect hedging funds.
7.Alternative energy ETFs are best for short term traders since they are very volatile and less risky.
8.Alternative energy ETFs are very flexible, like equity, ETFs trade throughout market hours. ETFs can be sold short or on margin, and prices are continuously updated during the trading day.
9.With most ETFs, dividends are straight away reinvested back into the fund. In the case of traditional funds, the time frames may differ.

Investing in alternative energy ETFs is a profitable and a responsible investment. But, one should identify that many companies invest only a small portion of their resources in alternative energy. Hence, lot of caution must be exercised while investing in these ETFs. The underlying securities must always be checked.

Disadvantages of Alternative Energy ETFs:

1.Alternative energy ETFs has a higher expense ratio. Their higher expense ratio than usual indices makes them an expensive fund to spend in.
2.Although the U.S. has an excess of ETF products, some countries only have a few ETFs in which to invest. Moreover those regions which offer market ETFs, generally only include large-cap products leaving a lack of normal and small-sized funds.
3.In spite of many benefits to include ETFs in your portfolio, but it is very important to know that they are not the perfect investment for every situation. ETFs must be evaluated on a case-by-case basis for every investing strategy. You should understand all the risks involved with ETFs before you get started.
4.As Alternative energy ETFs tend to be narrowly focused, the lack of diversification makes them prone to huge losses.
5.The high volatility of the ETFs, obsessed by rumors and emotions, can de-motivate traders from investing long term.
6.A number of ETFs are not as actively traded as others. It may be a sector associated issue or even a regional issue. When such situation arises, it may be more useful to invest in managed fund where activity is higher.

Facts:

1.Many green technologies are becoming economically viable. For example, through the development of less expensive materials and improved production and installation methods, researchers aim to make solar cells cost-competitive with traditional electricity by 2015.[#1]

2.China has set a goal of creating 30 gigawatts of renewable energy capacity by 2020, up from 1.3 gigawatts now. [#2]

3.In 2007, for example, $18.9 billion of new money was raised in the public markets by clean energy companies — up 80% from 2006. And more than $6 billion was raised through the initial public offering of a single company.[#3]

4.Money is required to fund research and development of green technology. Money is needed to build the infrastructure that carries clean water to families and fields. In the U.S., it’s estimated that $662 billion is needed for water infrastructure from 2000 to 2019.[#4]

5.As developing nations industrialize, pollution has come to the fore. The World Bank estimates that between 2001 and 2020, nearly 600,000 Chinese a year will die prematurely due to air pollution.[#2]

6.The Chinese government estimates nearly one-third of the country’s rivers are too dirty for agricultural or industrial use.1 In addition to the human toll, the economic toll is huge — pollution and its related health problems cost China $54 billion a year.[#2]

7.Of the 11 industry segments that make up the cleantech investment category, the top five categories by total financings were solar, bio fuels, transportation, wind and smart grid.[#5]

8.Cleantech investments in North America, Europe, China and India reached $8.4 billion in 2008, up from $6.1 billion in 2007.[#5]

9.Transportation is the fastest growing source of greenhouse gas emissions in the U.S., accounting for 47% of the net increase in total U.S. emissions since 1990.[#6]

10.Eighty-six percent of the U.S.’s primary energy — the natural resources we harness for power — comes from carbon-emitting fossil fuels.[#7]

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Solar energy is the cleanest and inexhaustible of all known energy sources. Solar energy is nothing but the light, heat and other radiation that is emitted from the sun. Solar radiation holds huge amounts of energy and is responsible for almost all the natural processes on earth.

Solar Light panels are completely free standing. Simply fit the light components collectively, press the spike into the ground or screw on to the wall mounting, it really is that simple! Power is provided by solar panels, located tactfully on the head of the lights.

During the day the lights charge up with free solar energy via the solar panels collecting power from both sunlight and daylight. The energy is stored in long-life NiCad batteries (supplied) integrated into the lamp body. Often, these lights are designed to turn on automatically at end of the day, providing an enhancing effect through-out the night, and then charge up again during the day. All weather design ensures that Solar Lights are not affected by unfavorable weather conditions ensuring years of pleasure.

Science behind the working of Solar Light Panels:

The system operates just like a bank account. Withdrawals from the battery to power the light, source must be compensated for by adequate deposits of energy from the solar panels. Provided that the system is designed so deposits exceed withdrawals on an average daily basis, the battery remains charged and light source is consistently powered.

Features of our Solar Light Panels:

1.Automatic sunset sensors operate light at evening.
2.Strong design ideal for year round outdoor use.
3.Solid state Light Emitting Diodes give 20,000 hrs life.
4.These are the very economical lighting system.
5.Sun is a direct source of energy for the solar panel.
6.The battery is recharged during the day by direct-current (DC) electricity produced by the solar panel.
7.The light source is powered by the battery each night.
8.The electronic controls are used between the battery, light source and solar panels to protect the battery from overcharge discharge, and to control the timing and operation of the light.

Why to opt Solar Lights:

•Solar Lights are the very economical. As the cost of energy is always on the rise, every person is looking for more affordable options. Solar light panels are not only affordable but can be operated from natural sunlight, which is available for free for you. The natural sunlight provides the power for solar lights to work. They do not require electricity or gas. As this power is generated without using any external energy source, your energy bills will be much lower. Solar lights are the most reasonably priced type of outdoor lighting that you can find anywhere.

•No trenching, no metering, no wiring.

•A most important consideration is that these lights will not use up other energy resources. As electrical power and gas power are not needed, using solar light means that you are going green and you are doing your part to make sure that these resources are not depleted.

•These lights will get just the right amount of power to make them completely effective. These lights are not overly bright or very dim light that is essentially useless, but are completely effective.

•Solar light panels are easy to install. You will not require to waste money hiring a professional to do it. You can have your lights suitably installed and in great working condition in no time at all.

•Solar lights also look great. There are several different styles available that it will be effortless to find the style best suited to your needs. Whether you are looking for something modest, stylish, to blend in with the natural environment or to give a bold contrast, there is one accessible for you.

•Solar light panels are both attractive and practical. These lights make your yard, streets, driveway, and walkway lit with just the right amount of lighting.

As you can see, there are plenty of reasons why you should consider adding solar yard lights to your home. They are the best choice for outdoor lighting available today. Let’s try to get out of this ferocious treadmill of paying hard earned money to the companies for their electricity. Make use of solar light panels and reduce your bill…….

Facts:

1.NASA estimated that the Sun gives or irradiates the earth 174 Petawatts (Pw) of solar energy every day. Out of this roughly 30% of energy is reflected back to space, and another major share is absorbed by our atmosphere. Even if we get only 10% of this energy which is about 17.4 Pw per day, it is still more than the whole daily energy requirement worldwide. [#1]
2.Solar light panels help in deterring crime and by using these lights, you can augment the visibility of your place thus augmenting the safety of people who walks along the pathway while taking the benefit of reduced electric bills.[#4]
3.Do you know out of total solar radiation that falls on our solar panel how much energy does our Solar cell absorb? Sorry to say that our simple solar panel can absorb only about 14 % or less.
4.Solar energy is sustainable, clean and green energy.
5.The batteries incorporated on Solar Lights panels are recharged during the day. The battery used is so efficient that it can hold power all through the whole night which is usually for 12 hours.[#4]
6.Solar energy with the help of developing technologies play an important role in reducing greenhouse gasses and helps in stimulating the economy.
7.Solar Energy is measured in kilowatt-hour. 1 kilowatt = 1000 watts.
8.1-kilowatt home solar system consists of about 10-12 solar panels and requires about 100 square feet of installation area. [#2]
9.Solar thermal technology can also create electricity by creating steam to power generators.
10.In 1990, a solar powered airplane flew across the U.S.[#2]

11.The “solar panel” accounts for between 40-50% of the total cost of an installed solar energy system. [#2]

12.During the 15th century, Leonardo da Vinci already had plans for solar concentrators in his notebooks.
13.In just one hour, the earth receives more energy from the sun than the entire world uses during a whole year.[#3]

14.Solar energy can produce lighting for indoor or outdoor use. It can be used to heat swimming pools, power cars, and small appliances. You can even cook food with solar energy.
15.According to a global price survey, solar energy prices have declined an average of 4% per year for the past 10 to 15 years.
16.A 1-kilowatt home solar system will prevent approximately 170 lbs. of coal from being burned, 300 lbs of CO2 from being released into the atmosphere and 105 gallons of water from being consumed each month! [#2]

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The need of the hour is sustainable and green energy. We can no longer afford to emit tones of carbon dioxide into the atmosphere, nor can we cope with the rising fuel prices anymore. The myth of infinite natural reserves has been dispelled. We have lot other renewable sources of energy all around us to be tapped.

Wind is a form of solar energy. The irregular heating of the atmosphere by the sun, the irregularities of the earth’s surface, plus rotation of the earth causes winds. This wind flow, or wind energy, when “harvested” by wind turbines produces energy which can be trapped to generate electricity and perform many functions.

Vertical-axis wind turbines (VAWT) are a form of wind turbine in which the blades are connected to a vertical axis. They are omni-directional which implies that it can instantaneously accept wind from any direction not like Horizontal Axis Wind Turbines (HAWTs) which have to constantly rotate so that they are facing the wind.

VAWT is near the ground, having all of the main components close to the ground. Early designs (Savonius, Darrieus, giromill and cycloturbine) had some drawbacks like the pulsatory torque that can be produced during each revolution and the huge bending moments on the blades. But the later designs like Turby, quietrevolution and aerotecture solved these shortcomings. VAWTs provided an economical alternative for domestic applications having the ability to self-start in light winds and are noise free.

Vertical axis wind turbines usually are created from lift-based or drag based designs. Following are some of examples of VAWT:

Anemometer: The 3-cup anemometer for measuring wind speed is an example of drag based vertical axis wind turbines (VAWT). If the cup’s velocity is same as the wind speed, it can be said that the instrument is working with a tip speed ratio (TSR) of 1. These cups can never go faster than the wind; therefore TSR will always be 1 or less.

Darrieus: Lift based models can provide more efficiency and more power than drag based turbines. Darrieus Vertical-Axis Machines is an example of Lift- based designs. This vertical axis wind turbine is shaped like an “eggbeater”. This VAWT produces large torque ripple and cyclical stress on the tower, which contributes to poor dependability. Generally they also require some external power source, or an additional Savonius rotor to start turning, as the starting torque is very low.

The Turby: It is a brand of vertical-axis Darrieus wind turbine. This wind turbine consists of three vertical symmetrical airfoil blades, with each blade having a helical twist. Due to symmetry of the turbine and of the blades, there is no torque on a stationary turbine, as with a Darrieus turbine. Starting is attained by operating the generator as a motor. Torque is created by a change in the apparent wind direction relative to the moving blades.

The quietrevolution qr5: This is an inventive wind turbine which works well in the urban environment, where wind directions change frequently. This design is the result of a grouping of sound engineering principles and state-of-the-art aerospace technology. The quietrevolution qr5 differs from a horizontal axis wind turbine in that it doesn’t need to change its orientation to track the wind.

People are interested in vertical axis wind turbines as along with new technologies they are making them a more viable alternative. These Vertical axis wind turbines are best suited for home as well as residential use as they are smaller and can be installed on a rooftop or in a backyard. These turbines come in many different sizes, shapes and colors.

Some advantages of vertical axis wind turbines are:

1. Lots of VAWT’s are bladeless, turning instead with flanges or other wind-catching outcroppings that don’t obstruct with the birds’ flight and hence they tend to be bird-friendly.

2. Design and efficiently of VAWT’s make them generally turn at lower wind speeds than other varieties. This is particularly true of magnetic wind turbines or (Maglev turbines) that have low resistance because of the use of magnets.

3. Unlike horizontal turbines, VAWT’s can be mounted closer to the ground for instance upon a rooftop rather than a 50 ft. to 300 ft. tower.

4. Various VAWT’s have a cylindrical or helical design, which makes them less affected by cross winds.

5. quieter than other models

6. VAWT need not be pointed in to the wind.

7. VAWT’s don’t need as much wind to start spinning and they can utilize wind from any direction. Unlike horizontal wind generator they are not that effected by cross winds.

8. VAWT has the compact size which can fit almost anywhere, and don’t necessarily need to be posted on a high spot. They can be fitted in the yard, on an outdoor porch, and on top of a home or garage.

Wind Energy Facts and Figures

1.Germany is the world’s largest wind energy producer and United States is second in wind energy production.

2.Denmark, Ireland, Sweden, The Netherlands and the United Kingdom are the five countries currently having offshore wind turbines.[#2]

3.The top known U. S. state for wind energy is Texas which is followed by California.[#2]

4.One megawatt of wind energy created translates to $1 million in economic development together with site planning, building, delivery, assembly and other benefits.[#2]

5.According to American Wind Energy Association, the use of U. S. wind turbines may lessen the amount of carbon dioxide in the air by one-third.[#2]

6.Over 80% of the costs for wind energy are because of construction materials and building.[#2]

7.Wind turbines have been used to generate electricity for over 100 years.[#2]

8.Wind is an alternating energy source and does not provide power on demand as will fossil fuel power plants.

9.Homeowners can sell excess wind energy back to the utility companies.

10.One megawatt of wind energy is sufficient to power 250 to 300 houses.

11.The majority of home wind turbines are rated at 50 kilowatts or less.

12.Wind turbines use the kinetic energy of the wind and convert it into mechanical power or electricity.

13.Most of the older issues with wind turbines such as noise, visual impacts and bird mortality have been resolved with VAWTs latest improvements.

14.As of 2008, 35 states in the U. S. are producing electricity from wind energy.[#2]

15.Wind powered electricity generation has undergone considerable growth in installed capacity from ~6,100MW in 1996 to 94,123MW at the end of 2007 and a forecast of 240,300MW by the end of 2012.[#3]

16.According to the Global Wind Energy Council, Canada increased its installed wind energy capacity by 113 per cent in 2006, bringing it up to 1,459 megawatts – enough capacity to provide the energy needs of nearly a million households, while preventing the emission of 3 million tones of carbon dioxide a year. [#4]

I found VAWT as innovative, quiet and reliable. So what are you waiting for be powered by wind energy and invest in the future. It will reduce or even eliminate your reliance on utility companies and although you aren’t fully off the grid, your overall energy bills can be reduced by half or more. That is for sure, there won’t be any time when there is no wind here on Earth that is just how Mother Nature works. But, there is always some kind of wind, no matter where you live. It is most important that we all do our part to conserve energy, and whatsoever it takes to save our Planet.

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Solar Attic Fan provides attic venting which is an important aspect in maintaining a healthy energy efficient home. Proper venting cools your roof which not only extends the material life but also reduces the load on your air conditioning system. Attic venting also increases fresh air flow which reduces moisture build up produced by every day activities like showering and cooking.

Excess moisture trapped in your attic can cause many problems like rust and rot, increased bacteria and mold counts which can have a direct impact on your respiratory health. Solar attic fans simply change the grid energy source with free solar energy. They run when the sun is shining and adding heat to your house. They can be installed wherever unobstructed sunlight is available for their solar modules.

How Solar Attic Fan Work:

An electric fan to cool off an attic space is not a new concept. Many households use fans to drive out excess heat that builds up under the roof. These fans are typically connected to household AC power using thermostatic switch. The principle behind this is simple as air trapped under roof becomes very hot. By conduction, that heat passes into the rooms through their ceilings, resulting in increase of the temperature of the house. This in turn resulted in an increased use of air conditioning. By exhausting hot air from the attic space, attic fans trims down the need for air conditioning, saving money and energy in the process.

Benefits of Solar Attic Fan:

Lowers attic temperature:

Solar Attic Fans lowers attic temperature which results in reducing the load on the HVAC System. The most important reason for attic ventilation is to lower attic space temperature in the warmer months. Attic area can get very hot during summer days. Proper attic ventilation can help in reducing the temperature. Regardless of how much insulation is in the attic, heat can even then transfer into adjacent living spaces. Actually, extra insulation can add to temperature as heat is trapped in the insulation. Proper ventilation removes this excess heat build-up and hence helps in reducing the work load of the air conditioning system, thereby saving energy.

Prevents ice blocking in colder climates:

Heavy snowfall can generate ice wall that cause a roof to leak along the attic. Wintertime ventilation can help to avoid moisture build-up in the attic space which can dampen insulation, reducing its effectiveness, or contribute to mold growth, peeling paint or flaking plaster. Moreover, the heavy weight of the ice that fills the rain gutters can rip off the gutters. The best way to prevent this is through proper attic ventilation.

Extends the life of the roofing materials:

In the cooler months, moisture is the main concern. In spite of using vapor barriers to keep moisture from entering the attic, there are air leaks in the region of ceiling light fixtures, bathroom exhaust fans which allows unwanted moisture into the attic. Moisture condensing on the roof deck can lead to the growth of mold, mildew and rot in the roof deck and framing.

Attic ventilation evacuates the warm moist air that heat sources produce. Hot moist air enduring in the attic spaces can condense on the roof sheathing and rot it out and can also cause mold to build up on the interior walls.

Why to opt Solar Attic Fans:

• Because solar attic fans cost nothing to operate, and are more affordable to operate than conventional powered attic fans.
• By reducing attic temperature, attic fans helps to reduce summertime cooling loads at the same time provides ventilation without added utility load.
• Solar attic fans are easy to install and doesn’t have any wires hence eliminates the need for an electrician. You can easily install it using conventional materials, tools, and techniques
• Reduces cooling load on AC units
• Operates on free solar energy
• Adjustable solar panel

Facts:

1. Retail prices range from about $350 to $600 depending on ventilation capacity, manufacturer, and optional features of the unit, such as a thermostat.[#1]
2. Solar powered fans are fueled by the sun, so there is no cost of operation.
3. Attic temperatures can get up to 150ºF without an attic fan.[#3]
4. Attic solar fans can lower upstairs room temperatures by 10º.[#3]
   Attic solar fans help in lengthening roof life by keeping shingles cooler.
5. Attic solar fans save up to 30% on air-conditioning costs.
6. Attic solar fans are adaptable to any location, roof type, in any environment.
7. You can even cook food with solar energy.
8. Solar Energy is becoming more and more popular. The worldwide demand for Solar Energy is currently greater than supply.
9. Solar energy can also be used to heat swimming pools, power cars, for calculators and other small appliances. It produces lighting for indoors or outdoors.

10. Solar energy is responsible for weather patterns and ocean currents. [#2]

11.  Clouds, pollution and wind can prevent the sun’s rays from reaching the earth.[#2]

12. Sunlight travels to the earth in approximately 8 minutes from 93,000,000 miles away, at 186,282 miles per second.[#2]

13. The sun is also the main source of non-renewable fossil fuels (coal, gas and petroleum), which began life as plants or animals     whose energy came from the sun millions of year ago. [#2]

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The world’s supply of fossil fuels such as coal and oil is rapidly depleting. At the same time, we are become more aware of the large toll that the use of these fossil fuels is taking on our environment. Not only do they contribute to increased pollution and carbon dioxide levels but mining practices required to tap these sources are often devastating.   As a result, the need for environmentally friendly, renewable power sources becomes more evident every day. One of the most exciting and widely used forms of alternate energy is hydroelectric power. Hydroelectric power is known to be a clean and renewable resource with many benefits.

From nearly the dawn of recorded time, mankind has sought to find ways to utilize the power of water. We have used it for travel, for processing our grain, and for sanitation.  The use of water wheels to generate primitive forms of hydroelectric power dates back to ancient civilizations in Greece and Rome. Since its inception, hydroelectric power has proven to be very valuable and modifications and improvements have continued throughout time. One pivotal improvement in hydroelectric technology came in the form of the Pelton wheel.

Pelton Water Wheel

The Pelton wheel was invented by Lester Allen Pelton (1829-1908) during the 19th century in the United States. Pelton’s invention was brought about by a combination of necessity and luck as many important technological breakthroughs often are. It has been said that Pelton was driven to travel to the west in 1850 as a result of the booming gold rush.

In 1964, he became employed as a millwright in a busy town. At this time, the gold rush was taking a toll on the environment and resources such as firewood and water were running low. This was pivotal because at the same time the demand for power was increasing rapidly. Although many water wheels were in place, the water supply could not meet the demand for power. This combination drove Pelton to investigate a more efficient water wheel.

Written accounts say that Pelton was inspired to design the Pelton wheel when the water wheel he was working on malfunctioned. During the malfunction, the wheel was thrown off balance causing the incoming water to hit the cups on the wheel near the edge rather than in the center as it was designed to do. Remarkably, Pelton observed that the wheel actually began to spin faster. Pelton took note and began designing a prototype for what would come to be known as the Pelton wheel.

In 1878, he revealed his first prototype constructed from a bike wheel and tin cups. His design was slow to gain popularity but was patented in 1880 and gained a steady following thereafter1

The Pelton wheel, in general, operates in the same way as all hydroelectric turbines and water wheels. They work by capturing the energy generated by the flow of water. As water is pushed onto the blades or cups, force is generated. This force acts through distance and results in the transfer of energy.  There are two primary types of water turbines in use today, the reaction turbine and the impulse turbine. The Pelton wheel is an impulse type turbine.

The Pelton wheel, like all impulse turbines, operates using Newton’s second law to extract energy from the flow of a fluid jet. These traditional turbines have cups or buckets around the wheel collecting the water. Each cup represents an individual cup shape. The cups are not split in any way. In this type of wheel, a jet of water shoots in the cup hitting it directly in the center thus pushing the wheel.

Pelton Water Turbine

However, the Pelton wheel differs from traditional impulse water turbines in one very important way. On the Pelton wheel, each of the cups is split down the middle, typically by a metal divider. The overall effect is that each cup appears to be comprised of two individual cups placed side by side rather than one. These cup pairs are located at every spoke on the wheel.

In this system, the jet of water is still directed at the center of the cup but is then split as a result of hitting the divider. In the traditional cup design, the impact of the water hitting the cup is wasted energy. In the Pelton wheel system, the forces of the water are balanced in the cup and the overall wheel. As a result, efficiency is greatly increased. Below is a graphic video illustrating the Pelton wheel.

The Pelton wheel revolutionized hydroelectric power generation by offering an innovative design. It is highly efficient when compared to the other impulse turbines of the past. Additionally, it requires significantly less water and can be used in areas with low water flow.

Pelton wheels come in all sizes. Sizes range from small, household sized units to multi-ton units. Therefore, they can be used in many locations. Industrial operations and individual consumers alike can benefit from their clean, efficient power generation.

Pelton wheels are most efficient when they are located in areas with a high head of water.  That is, an area where there is a large drop such as a waterfall, before the water enters the wheel. Although many consider this to be a disadvantage, it is really an efficiency issue rather than a deal breaker. Pelton wheels can in fact operate in areas with a lower head of water with reduced, but still acceptable, efficiency levels.

Pelton wheels saw their greatest success in the early 1900s. With the advent of the diesel engine, their popularity declined. By the 1950s, Pelton wheels were virtually replaced by diesel engines in most applications. Many examples of these now antique wheels can be seen throughout the United States and the world. Click Below to see video of the historical Ames Colorado Hydro Power Station.

Despite their historical decline in use, Pelton wheels are making a comeback. They are again being manufactured and distributed with great success. Ironically, we again find ourselves in a situation similar to that which brought about the invention of the Pelton wheel. Again our natural resources are overtaxed and our non-renewable resources are dwindling. We are just now beginning to realize, as Lester Pelton realized in 1878, that we must find alternative, renewable, clean, and environmentally friendly resources to meet our power needs. The Pelton wheel deserves not only respect for its history but also for its potential contribution in our search for renewable resources.

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With the upcoming increase in electricity rates and the green movement pushing alternative energy sources, the solar power industry has become a booming business. Many people are considering solar power as a way to break free of the conventions and whims of their electric company and be self sufficient when it comes to powering their home.

However, you don’t have to go completely off the grid to power your home with solar energy. In fact, most people who install a solar power system will stay tied to their electric company’s grid as a precautionary back up system. You see, when people go “off grid,” it means they cut all ties to their power company. They are no longer plugged into the power grid and rely solely on the power they generate through their solar panels. While the feeling of being self-sufficient is a great feeling to have, the people who do decide to go off grid completely are missing out on some exciting benefits that come with staying tied to your power company’s grid system.

Even though you install a solar power system on your house, it’s advantageous to stay connected to the grid for many reasons. One reason is simply the feeling of comfort you get from knowing that on the days where you may not generate enough power for your home, you still have the ability to draw power from your electric company. This keeps the power going no matter what it’s like outside. In times of stormy weather or days with less daylight, when your solar panels may not power up completely, you still can have electricity.

Staying tied to the grid can also give you the benefit of simply reducing your electric bill. If you can’t afford a total solar power system, there is the option of adding panels a little at a time as your budget allows. Even just a little bit of solar power to generate electricity for your appliances can make a significant dent in your electric bill. Some people only use solar power to generate electricity for the things they know pull the most power such as the central air conditioning unit.

Another advantage of staying tied to your power company’s grid system is the ability to generate electricity for the grid. If you are tied to the grid, and you generate excess electricity, that power doesn’t go to waste. It will feed back into the grid and your meter will roll backwards. This helps provide energy for your neighbors and also gives you some extra income at the end of the year. That’s right! The power company will pay you for any power your solar energy system provides to the grid. Each power company has their own rules and regulations on this, so check with them first on what their policy is concerning grid tied power. Watch the video below to learn more about the grid tie converter.

As we all know an increase in your electric bill is coming if it hasn’t already hit you. Electricity rates are jumping by at least 20 percent across the country, and you’ll see it hit hard in your electric bill once the rates have been established. Solar power tied to the grid can help offset these rate increases. Even if you only install a smaller solar power system, you can compensate for these rate increases with the amount of energy you produce with your solar panels.

And of course, another great benefit of solar power is being able to generate clean renewable power that is good for the environment. Even just a little solar power in your home can have a significant impact on the reduction of harmful toxins that are released into the atmosphere. Every little bit helps and by reducing the amount of power you use, you can do your part in the green movement.

Now that you know all of the benefits of grid tied solar power, you’re probably wondering how to get started. First, you need to decide just how much solar power you want to generate. Can you afford to power your entire house? Or do you want to just do a little at a time? Take a look at your last electric bill to get an idea of how many watts you use on a monthly basis. Then call your local utility company up to see what kind of programs or regulations they have about solar systems. Do they have a credit system? If so, then you may consider trying to install a complete solar power system on your home if it’s within your budget.

If you’re budget is low, under $1,000, then you will need to start out small. There are many do-it-yourself kits that you purchase online for about $200 that will allow you to set up your system by yourself. They usually come with one solar panel at a time, so you can gradually increase the amount of power you are generating as your budget allows. These can be frustrating thought if you don’t know what you’re doing. Make sure you do your research and if you are a technical person who can follow directions, you should be fine.

A good idea is to take the money that you are saving on your electric bill and start a fund for your next panel. Pretty soon, you’ll have enough to install several panels and increase your savings significantly.

you can check out that explain in more detail how to install these simple kits and even tie them together for more wattage output. Click on the video below to watch the first video of this series.

Solar power is the way of the future. With energy prices rising and the economy still underwater, becoming self sufficient and cutting your monthly bills is a necessity, and solar energy can give you the power to do just that. With just a little research, and a couple of phone calls to your local power company, you can begin providing your home with clean, renewable solar energy.

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