Energy

About: <p><strong>What Is Wind Energy? Wind energy (or wind power) refers to creating electricity using the wind or air flows that occur naturally in the earth&rsquo;s atmosphere. Modern wind turbines are used to capture kinetic energy from the wind and generate electricity.</strong></p> <h2>Wind Energy: Three Main Types Of Wind Energy:</h2> <ul> <li>Utility-scale wind:&nbsp;Wind turbines that range in size from 100 kilowatts to several megawatts. The electricity is delivered to the power grid and distributed to the end-user by electric utilities or power system operators.</li> <li>Distributed or "small" wind:&nbsp; Single small wind turbines below 100 kilowatts used to power a home, farm, or small business directly and are not connected to the grid.</li> <li>Offshore wind:&nbsp;Wind turbines erected in large bodies of water, usually on the continental shelf.&nbsp;Offshore wind turbines are more massive than land-based turbines and can generate more power.</li> </ul> <h2>How Wind Turbines Work</h2> <p>When the wind blows past a wind turbine, its blades capture the wind&rsquo;s kinetic energy and rotate, turning it into mechanical energy. This rotation turns an internal shaft connected to a gearbox, which increases the speed of rotation by a factor of 100. That spins a generator that produces electricity.</p> <p>Typically standing at least 80 meters (262 feet) tall, tubular steel towers support a hub with three attached blades and a 'nacelle,' which houses the shaft, gearbox, generator, and controls. Wind measurements are collected, which direct the turbine to rotate and face the strongest wind, and the angle or "pitch" of its blades is optimized to capture energy.</p> <p>The Haliade-X offshore turbine features a 12 MW capacity, 220-meter rotor, a 107-meter blade, and digital capabilities is the&nbsp;not only the most powerful wind turbine in the world but also features a 63% capacity factor&mdash;five to seven points above industry standard. Capacity factor compares how much energy was generated against the maximum that could have been produced at the continuous full-power operation during a specific period. Each incremental point in capacity factor represents around $7 million in revenue for our customers over the life of a windfarm.</p> <p>A typical modern turbine will generate electricity when wind speeds reach six to nine miles per hour (mph), known as the cut-in speed. Turbines will shut down if the wind is blowing too hard (roughly 55 miles an hour) to prevent equipment damage.</p> <p>Over the course of a year, modern turbines can generate usable amounts of electricity over 90 percent of the time. For example, if the wind at a turbine reaches the cut-in speed of six to nine mph, the turbine will generate electricity. As wind speeds increase, so does electricity production.</p> <p>Another standard measure of wind energy production is called the capacity factor. This measures the amount of electricity a wind turbine produces in a given period (typically a year) relative to its maximum potential.</p> <p>For example, suppose the maximum theoretical output of a two-megawatt wind turbine in a year is 17,520 megawatt-hours (two times 8,760 hours, the number of hours in a year). However, the turbine may only produce 7,884 megawatt-hours over the year because the wind wasn&rsquo;t always blowing hard enough to generate the maximum amount of electricity the turbine was capable of producing. In this case, the turbine has a 45 percent (7,884 divided by 17,520) capacity factor. Remember&mdash;this does not mean the turbine only generated electricity 45 percent of the time. Modern wind farms often have capacity factors more significant than 40 percent, close to some types of coal or natural gas power plants.</p> <h2>Windmills vs. Wind Turbines</h2> <p>Sometimes people use the terms 'windmill' and 'wind turbine' interchangeably, but there are significant differences. People have been using windmills for centuries to grind grain, pump water, and do other work. Windmills generate mechanical energy, but they do not generate electricity. In contrast, modern wind turbines are highly evolved machines with more than 8,000 parts that harness wind's kinetic energy and convert it into electricity.</p> <h2>What Is A Wind Farm?</h2> <p>Often a large number of wind turbines are built close together, which is referred to as a wind project or wind farm. A wind farm functions as a single power plant and sends electricity to the grid.</p> <h2>How Does Wind Energy Get To You?</h2> <p>The turbines in a wind farm are connected, so the electricity they generate can travel from the wind farm to the power grid. Once wind energy is on the primary power grid, electric utilities or power operators will send the electricity to where people need it.</p> <p>Smaller transmission lines, called distribution lines, collect electricity generated at the wind project and transport it to larger 'network' transmission lines. The electricity can travel across long distances to the locations where it is needed. Finally, smaller distribution lines deliver electricity directly to your town, home, or business.</p> <p><strong>Before you go!</strong></p> <p><em><strong>Recommended:&nbsp;</strong><a href="https://www.whatsorb.com/energy/wind-turbines-learning-about-the-limits-of-this-renewable"><strong>Wind Turbines: Limits Of This Renewable</strong></a></em></p> <p><em><strong>Do you like this article about Gravitricity, or do you have a question or remark? Leave a comment below. We try to respond the same day.</strong></em></p> <p><em><strong>Like to write and publish your article about wind turbines?<br />Send your writing &amp; scribble with a photo to&nbsp;<a href="mailto:[email protected]">[email protected]</a>, and we will write an interesting article based on your input.<br /></strong></em></p>
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Energy Wind

Energy is what the world keeps turning. Solar-, wind, hydrogen-, tidal, and even energy generated in space. What are the latest innovations in the field of generating clean, green, or blue energy? Will renewables help us out from fossil energy dominance?

Energy

What Is Wind Energy? Wind energy (or wind power) refers to creating electricity using the wind or air flows that occur naturally in the earth’s atmosphere. Modern wind turbines are used to capture kinetic energy from the wind and generate electricity.

Wind Energy: Three Main Types Of Wind Energy:

  • Utility-scale wind: Wind turbines that range in size from 100 kilowatts to several megawatts. The electricity is delivered to the power grid and distributed to the end-user by electric utilities or power system operators.
  • Distributed or "small" wind:  Single small wind turbines below 100 kilowatts used to power a home, farm, or small business directly and are not connected to the grid.
  • Offshore wind: Wind turbines erected in large bodies of water, usually on the continental shelf. Offshore wind turbines are more massive than land-based turbines and can generate more power.

How Wind Turbines Work

When the wind blows past a wind turbine, its blades capture the wind’s kinetic energy and rotate, turning it into mechanical energy. This rotation turns an internal shaft connected to a gearbox, which increases the speed of rotation by a factor of 100. That spins a generator that produces electricity.

Typically standing at least 80 meters (262 feet) tall, tubular steel towers support a hub with three attached blades and a 'nacelle,' which houses the shaft, gearbox, generator, and controls. Wind measurements are collected, which direct the turbine to rotate and face the strongest wind, and the angle or "pitch" of its blades is optimized to capture energy.

The Haliade-X offshore turbine features a 12 MW capacity, 220-meter rotor, a 107-meter blade, and digital capabilities is the not only the most powerful wind turbine in the world but also features a 63% capacity factor—five to seven points above industry standard. Capacity factor compares how much energy was generated against the maximum that could have been produced at the continuous full-power operation during a specific period. Each incremental point in capacity factor represents around $7 million in revenue for our customers over the life of a windfarm.

A typical modern turbine will generate electricity when wind speeds reach six to nine miles per hour (mph), known as the cut-in speed. Turbines will shut down if the wind is blowing too hard (roughly 55 miles an hour) to prevent equipment damage.

Over the course of a year, modern turbines can generate usable amounts of electricity over 90 percent of the time. For example, if the wind at a turbine reaches the cut-in speed of six to nine mph, the turbine will generate electricity. As wind speeds increase, so does electricity production.

Another standard measure of wind energy production is called the capacity factor. This measures the amount of electricity a wind turbine produces in a given period (typically a year) relative to its maximum potential.

For example, suppose the maximum theoretical output of a two-megawatt wind turbine in a year is 17,520 megawatt-hours (two times 8,760 hours, the number of hours in a year). However, the turbine may only produce 7,884 megawatt-hours over the year because the wind wasn’t always blowing hard enough to generate the maximum amount of electricity the turbine was capable of producing. In this case, the turbine has a 45 percent (7,884 divided by 17,520) capacity factor. Remember—this does not mean the turbine only generated electricity 45 percent of the time. Modern wind farms often have capacity factors more significant than 40 percent, close to some types of coal or natural gas power plants.

Windmills vs. Wind Turbines

Sometimes people use the terms 'windmill' and 'wind turbine' interchangeably, but there are significant differences. People have been using windmills for centuries to grind grain, pump water, and do other work. Windmills generate mechanical energy, but they do not generate electricity. In contrast, modern wind turbines are highly evolved machines with more than 8,000 parts that harness wind's kinetic energy and convert it into electricity.

What Is A Wind Farm?

Often a large number of wind turbines are built close together, which is referred to as a wind project or wind farm. A wind farm functions as a single power plant and sends electricity to the grid.

How Does Wind Energy Get To You?

The turbines in a wind farm are connected, so the electricity they generate can travel from the wind farm to the power grid. Once wind energy is on the primary power grid, electric utilities or power operators will send the electricity to where people need it.

Smaller transmission lines, called distribution lines, collect electricity generated at the wind project and transport it to larger 'network' transmission lines. The electricity can travel across long distances to the locations where it is needed. Finally, smaller distribution lines deliver electricity directly to your town, home, or business.

Before you go!

Recommended: Wind Turbines: Limits Of This Renewable

Do you like this article about Gravitricity, or do you have a question or remark? Leave a comment below. We try to respond the same day.

Like to write and publish your article about wind turbines?
Send your writing & scribble with a photo to [email protected], and we will write an interesting article based on your input.

Stay Updated on Environmental Improvements And Global Innovations