On this page you will find everything you need to know about windmills and wind turbines, how the work, what they do and what think about when buying wind turbines or windmills.
Wind Turbines For Sale
Here you will find a great variety of wind turbines and whether you are looking for used wind turbines for sale or brand new ones you will be able to find what you are looking for. There are several things to think about when buying a wind turbine, simply scroll down for more information about what’s important when you buy wind turbines.
Buying Wind Turbines
Domestic consumers can find small wind turbines for sale easily. They can buy small wind turbines to generate renewable energy source at their homes. Alternatively, individual homeowners can team up and have a communal wind turbine installed at an estate or residential area.
Apart from having access to affordable power, the initial home wind turbine cost is within reach if like-minded people come together. Otherwise, buying used wind turbines can be a cheap approach. A windmill turbine whose production is less than 100 kilowatts may cost around $5,000 per kilowatt of capacity. However, this cost depends on where people buy it and if it needs an additional wind power generator.
On the other hand, a 10-kilowatt wind generation turbine can cost a homeowner around $60,000 when installed. This machine is idea for producing enough energy to power a large home. When buying, consumers should understand if the quoted wind turbine price includes installation charges. Otherwise, users may have to fork out additional amounts for installation and regular maintenance.
Commercial wind turbines are obviously costlier than wind turbines for homes especially because they need larger wind generators. The cost of wind turbines could be in the range of $1.5 million -$2 million. The total cost that wind energy companies or organizations will incur depends on many factors. Examples are the number of turbines bought for the windmill and construction contracts.
In addition, the cost of financing the purchase locations of the windmill generator and other factors play a role in the determination of the total cost. Factors like taxes, incentives, insurance, the need for future upgrades, repair and warranty can increase the cost greatly. Most importantly, it is prudent to buy a wind turbine with a reasonable purchase agreement.
When people buy and install power, they can start enjoying renewable sources of energy immediately. The biggest instant benefit is the fact that wind power is more affordable than other sources of power such as electricity and petroleum.
For this reason, consumers will pay reduced energy bills at the end of each year. When wind power is used to power homes, schools, hospitals and institutions, the people in these places can enjoy clean energy. The same cannot be said about petroleum products, coal and other non-renewable sources of energy.
Countries like USA, Germany, Spain, India and Denmark have installed many wind power stations across their locations. This way, they have shunned the burning of fossil fuels that causes excessive heating of the earth. For this reason, wind power generation is often referred to as green energy.
As a renewable source, it can be used many times repeatedly without depleting it. The opposite is true for petroleum products, coal and other sources that have to be mined from under the ground. While fossil fuels can expire in a couple of years, wind is not depleted.
The fact that windmill energy causes less pollution is a big advantage. Unlike chemical sources of energy, wind generation does not introduce toxic compounds to the air, water and environment. After all, wind turbines are usually erected in unpopulated hillsides, mountains, plains and offshore locations.
Unlike electricity lines from the frig system, a home wind turbine occupies just a small area of land. The same portion of land can still be used for farming or ranching. Otherwise, large wind farms are usually located in remote places away from human settlements.
While the initial cost of buying a turbine and installing it is huge, these renewable resources are much cheaper than alternative sources of energy. When its use is combined with solar, wind provides reliable, cheap and steady source of power for homes and industries alike.
The other biggest advantage of installing wind turbines locally is the fact that it creates jobs for local people. Technicians who install, operate and maintain the systems are engaged in active employment throughout their lives.
Wind Turbine Facts
When the world discovered wind as a source of renewable energy, many organizations and associations have researched on what is wind energy. Others have been established to manage the installations, control use of power and keep details of the same.
The United States Department f Energy, for example has records of facts and statistics surrounding the use alternative energy sources such as wind power in the US. It states that early human civilizations used wind power to pump water and crush grain. As early as 2000 BC, humans developed windmills in places like China and Persia.
While a turbine looks simple, some can be very big. In fact, a single bade can measure 260 feet in length. In addition, the tower can stand some 328 feet above the ground. This would easily make it taller than the Statue of Liberty in the United States.
Few people know the wind power facts that most advanced wind turbine has more than 8000 different components, each playing its own role. The US manufactures most of these components. Currently, the country has more than 500 facilities that manufacture turbine-related components.
The higher the speed of wind cutting across the area, the faster the blade rotates. To access wind that is faster, governments, multinational wind turbine companies and communities seek to install taller turbines. The higher a turbine is, the faster the speed of wind it that harnesses.
China is the leading country as far as the knowledge of what a wind turbine is concerned. The second country is the United States followed closely by Germany. More than a third of all electric generation in the US since 2007 comes from wind resources.
Today, wind energy facts indicate that the potential of wind power above US waters is more than 4,000-gigawatts of electricity. In other words, the United States can produce four times its current electric power from wind. When the country harnesses this wind potential, coastal areas that are densely populated can be the biggest beneficiaries.
Wind energy facts reveal that there has been an average 25 percent increase in the production of wind power in the last decade. Some wind turbines are as high as a 20-storey building with blades measuring some 60 meters long. The recent mass production of these machines and wind generators in industrial economies such as China and Germany has made the renewable resource popular.
The country is slowly approaching this potential with an increase in residential wind turbines. By the end of 2014, its wind power capacity had surpassed the 65-gigawatt mark. This means that 17.5 million homes can benefit from exclusive alternative energy each year.
The Energy Department recorded a record low price for the price of power contracts in 2014. The figure stood at 2.35 cents for each kilowatt-hour. Further, the US government hopes it can save more than 260 billion gallons of water that is needed for hydropower generation. This process emits more than 12 gigatonnes of greenhouses gases to the atmosphere.
One criticism of this phenomenon is that turbines introduce noise pollution as they rotate at high speeds. The blades have also been termed as interfering with the population of birds and bats in a locality. However, this is not a strong drawback to hinder the explosion of wind energy generation.
What Is A Wind Turbine?
For hundreds of years, windmills for electricity have been used in the manufacture of renewable wind energy for use in commercial places and residential buildings. Windmills are electrical machines whose blades are turned around by wind in high speeds.
The turbine converts kinetic energy (energy in motion) to mechanical energy. The wind’s energy makes the three or more wind turbine blades to turn. A generator then converts the mechanical energy into electricity ready for use in any electrical appliance. There are different types of wind turbines.
How Wind Turbines Work
Many people ask the question – how does wind energy work. A turbine works in the opposite way in which a fan does. While a fan makes wind out of electric power, a wind turbine makes electric power out of wind. Wind turbine design can range from one machine to another. There is little difference between what is wind power and what is renewable energy.
A battery-less grid-tied system is one of the simplest yet most effective types. At the same time, it is friendly to the environment. While it can produce wind power for a homestead, it can also feed electricity to a national or local grid.
Modern turbines can be categorized under two different groups- horizontal and vertical wind turbines. Horizontal turbines usually have two or three blades that are placed facing the wind. On the contrary, vertical axis wind turbines have blades that rotate around a vertical axis.
These green energy devices can be erected on and or on offshore locations such as lakes, oceans and on islands. Generally, experts scout for the most appropriate location for erecting wind turbine blades. An example of good location is the top of a hill where experts find high-speed wind.
The size of utility-scale turbines ranges from 100 kilowatts upwards. The larger a wind power plant is, the more effective it is. For this reason, numerous developed countries group these together to form wind farms.
Small turbines whose production is below 100 kilowatts are essentially meant for telecommunication equipment, residential use and water pumping. Engineers can install these to function with photovoltaic systems, diesel engines and generators.
The result is a system referred to as hybrid wind generation system. These are commonly used in areas where a national grid is not available. Examples are remote areas where water pumping for irrigation or domestic consumption is needed.
According to the American Wind Energy Association, the US has a wind energy potential of 10 times the amount of national electricity consumption. However, these renewable energy sources vary from one location to another.
As countries become more aware of the potential of wind power generators, governments are installing more stations to tap into the renewable source. For example, many developed countries have embraced the community wind system where local communities benefit.
Community wind systems have benefited a number of businesses, homes, schools and institutions. Their sizes range from 1 MW to 20 MW or even higher. While a community benefits from the ownership and control of these mills, the distribution is entrusted to the municipal or local government grid.
A mid-size wind electricity project is another type of windmill power system that benefits local communities. Other categories are wind-diesel power projects and multi-megawatt wind power farms run by municipal councils and co-operative unions.
Residential Wind Turbines
Small-scale consumers such as homes can take advantage of the gains in wind power generation. Numerous companies sell machines for generating wind power for homes, estates, businesses and small institutions. This way, users can benefit from green energy that is free of emissions.
Wind turbine facts show that homes need to cut energy bills, the environment is also protected from harmful toxins that petroleum and other nonrenewable energy sources otherwise dump. The mass production of small wind turbines has made owning one more realistic today than ever before.
Before buying a turbine, homeowners should discover their annual or monthly electricity needs and compare these to their budgets. At the same time, they should determine if their localities experience the amount of wind that will actually produce power.
More importantly, one needs to confirm if local authority regulations allow the installation of wind turbines in the area. Finally, a homeowner should search for the most appropriate turbine from a number of trusted wind turbine manufacturers.
Settling for domestic wind turbines may be a daunting task especially because the specifications are technical. However, leading wind generation associations and agencies can provide technical advice to homeowners before settling on any personal wind turbine. The Small Wind Certification Council, for example maintains a list of recommended wind turbines for domestic use.
The terrain of the intended location is also a determinant of how wind energy works. The top of hilly areas are more likely to experience high-speed winds as compared to ridges and depressions. In addition, one should be certain of the ability to connect the domestic wind turbine to a battery bank, grid or the residential buildings.
It is important to gather as much information as possible on wind turbines for homes. Reading online reviews from independent authors is prudent. Otherwise, dishonest electric windmills manufacturers may portray their products in the best light possible for the sake of making sales.
When buying home wind power generators, homeowners should ask the dealer to refer them to other homeowners who have bought similar products from them in the past. This way, a prospective buyer can learn from the experiences of existing users.
In addition, knowing the reliability of the turbine is necessary. Otherwise, a buyer may purchase the equipment only to have it sit at his property and fail to function appropriately. If the company has been producing and selling turbines for a long time, it is worth the investment. Similarly, buyers should learn common problems that other users have experienced with a given turbine model.
On average, a home would need a small turbine whose generating capacity is 5-Kw. This output should be enough to meet the wind power energy demands of a typical American home. This however can depend on the wind speed at particular locations and the machine’s height above the ground.
According to the Wind Energy Foundation, 80 feet is the average height of a home wind generator installed in an area of relatively high wind speed. This is about twice the height of conventional telephone poles.
Cost of a wind turbine is usually an important factor to consider. Generally, the turbine described above may cost $30,000 but the figure may range from $20,000 to $50,000. This depends on the manufacturer, brand and dealer.
How Do Wind Turbines Work
When the wind fails to blow, homes connected to the grid will still enjoy connection. On the other hand, a homeowner can enjoy wind power when a neighbor’s apparatus generates more power than the owner actually needs. Generally, any excess power goes to the national or local grid for distribution elsewhere.
The dealers of the turbines usually play the role of installation of the machines. For this reason, the total cost that a company quotes for a prospective owner can shift upwards. This is the same for repair and regular maintenance. Most small turbines require an annual inspection throughout their lifetime. While some can last longer, most of these residential wind power turbines last 20-25 years. Those that use photovoltaic cells and batteries can last up to 30 years after installation.
How To Build A Wind Turbine
Contrary to popular belief, a homeowner can construct a diy wind generator. People looking for ways on how to make a wind turbine will be pleasantly surprised by the fact that many people in the past have actually made theirs, obtained certifications and are now living off the grid. Anyone with basic skills can make a turbine using locally available materials.
Before anything else, a homeowner should determine the speed at the desired location. To generate electricity in a cost-effective manner, the wind needs to travel at least 8 miles per hour or roughly 12 kilometers per hour. An anemometer is idea for measuring wind speed.
The next step is learning the local building codes and regulations surrounding the construction of a windmill in a certain location. This is necessary to avoid the interference of TV reception, radio signals and other communication systems. It is best to allow at least half an acre for the area of the turbine to avoid quarrels with neighbors.
Use light wooden materials or PVC tubing to make the blades of the desired domestic turbine. Let the blades have the correct sizes so that they may rotate effectively. Otherwise, one can purchase fabricated blades from a leading manufacturer. The turbine should have at least three free-rotating blades.
To produce electricity, connect the blades to a wind-powered generator. As most household generators are direct current appliances, one will need to incorporate an inverter that converts the energy to alternate current, ready for consumption by common household appliances.
When constructing a homemade wind generator, other materials that anyone will need include a spindle, a spindle plate, tapered rollers, spokes, studs, magnets, magnet rotors and a hub. When attaching these in place, one needs to wear protective gear to shield the body from potential injury. Examples are welding mask, leather gloves, overall and rubber boots among others.
When one has these, one can follow assembly instructions from numerous online resources. After construction, ensure the connection of wiring from the wind turbine technology to the house appropriately. Generally, a budget of $50 should be enough to see one through the DIY wind turbine.
Micro Wind Turbines
Apart from small wind turbines for homes, there are even smaller machines that generate renewable energy from wind resource. These gadgets are referred to as micro wind turbines. These come in aerodynamic designs that ensure little or no noise pollution.
For this reason, they are suitable for installation in urban centers where humans live. One would not even notice it as it is positioned conveniently in a rooftop.
Most wind energy companies that make modern micro wind turbines bring unprecedented advantage- wind tracker functionality. This feature enables the turbine to react fast to changes in wind direction and speed. The gadget intuitively rotates its blades in the direction of the changing wind.
The conventional micro wind turbine weight slightly less than 20kgs and is made of super lightweight materials. It can produce a maximum 1.3kW of power when the wind speed is 20 meters per second. This makes the small gadget ideal for installation in urban centers where noise pollution is undesirable.
Most of these instruments are easily tied into a charging power bank. This is especially useful where users desire to consume electricity off the national or local grid. In addition, a homeowner can feed its power into the mains power of an ordinary house.
This means that one can still use mains electricity when the area experiences little winds. It comes with a small power manager unit that allows users to plug it into other sources of renewable energies such as solar and wind power.
For the machine to function efficiently, one must install it in a location with enough wind speed. As the details of wind speed are technical, it may be necessary to visit the office of the local meteorological department.
However, the wind speeds quoted by MET departments may be general and not necessarily be the exact figures that a certain location enjoys. This is because of a difference in topography and physical features surrounding a specific home. For this reason, one may need to purchase a cup anemometer to measure wind speed more accurately.
One can install wind turbine generators on a flat rooftop after securing its scaffolding pole firmly. To enhance its upright standing posture, the manufacturers include scaffold ropes for diagonal installation to sustain its weight and wind drag. While some can be erected only on soil, most micro turbines are built to stand on concrete.
Some manufacturers have produced tiny turbines that produce only a little windmill electricity. The power is only enough to charge mobile phones, tablets and other devices that use USB charging connectivity. As they are built to be portable, these gadgets are so small that they can fit in a conventional backpack. However, various schools of thought have debated on the usefulness of these turbines.