Wind Turbines Write For Us – Guest Post Contribution

Wind Turbines Write For Us – The expansion of wind energy is essential to achieve the energy transition goal, to convert the energy supply to renewable energies – in the electricity sector, heating, and transport.

The first windmills had a vertical hub. They were probably first built in Persia (modern-day Iran) and used to grind flour.

Wind power is currently the cheapest form of power generation. The wind almost always blows – at least at the lofty heights at which the rotor blades turn in modern wind turbines. Installing wind turbines is also comparatively cost-efficient. Several operators or energy cooperatives with many citizens can share the investment costs of wind turbines.

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Wind Power For The Energy Transition

Wind turbines significantly contribute to expanding renewable energies – on land and increasingly on the high seas. Wind power has long been the most vital source of energy. But what characterizes wind power as an energy source? How tall is the untapped potential for a climate-neutral energy supply?

A wind turbine is, on average, 90 to 130 m high (hub height), the rotor diameter is up to 90 m, and the nominal output is 2 – 5 megawatts (MW), offshore (in the sea) up to 15 MW. The new generation of wind turbines sometimes reach impressive proportions: they can be up to 240 m high, including the rotor blades. By the way: The largest wind turbine in the world is currently in Germany: The largest wind turbine was built near Stuttgart in 2017 at 246.5 meters.

How Do Wind Turbines Work?

As a free energy source, the wind is available in unlimited quantities. Wind turbines use the power of nature. As the heart of a wind turbine, the rotor, with its glass or carbon fiber reinforced rotor blades, first converts the wind’s kinetic energy into mechanical rotational energy. As on an airplane’s wings, the wind flow on the aerodynamically shaped rotor blades creates a lift that causes the rotor to rotate. This rotor is connected to a generator in the nacelle, the machine house on top of the tower.

Mechanical rotational energy is converted into electrical energy by the generator. The generation of electricity in a wind turbine works in a very similar way to a bicycle dynamo.

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How Much Electricity Does A Wind Turbine Produce?

Under good conditions – i.e., in a windy location, for example, on a hill or the coast. Modern wind turbines generate an average of 15 million kWh of electricity annually. It can supply 4,000 households with green electricity for a whole year.

Are Wind Turbines Loud?

When the rotor blades of a wind turbine rotate, this causes noise emissions, i.e., they make a noise. Noise has been significantly reduced through ongoing optimization of the rotor blade profiles.

A wind turbine can stand 20-30 years before it has to be dismantled, and discarded wind turbines can largely be recycled. New, more extensive, and thus more profitable wind turbines are often built at the locations of outdated turbines (so-called repowering ).

What Types And Designs Of Wind Turbines Are There?

Wind Turbines Write For Us

Offshore wind turbines generate energy in the middle of the sea. Wind farms supply enough green energy to give electricity.

However, more wind turbines are on land: 55,000 MW of capacity is installed in so-called onshore wind farms.

Theoretically, every homeowner can put their small wind turbine on the roof or garden. A building permit is generally required from a height of 10 m.

When Do Wind Turbines Have To Stand Still?

If the price of electricity falls too much, operators of wind farms pay more – or switch off their systems. Even if too much electricity is produced, wind turbines stand still, which won’t happen with the energy transition.