какие есть возобновляемые источники энергии
Альтернативные источники энергии: что это, виды, есть ли в ...
Виды альтернативных источников энергии · 1. Солнечная энергия · 2. Энергия ветра · 3. Энергия воды · 4. Геотермальная энергия · 5. Биоэнергетика · 6.
По последним данным IRENA,
Ветроэнергетика является одной из самых быстроразвивающихся технологий возобновляемой энергетики. <anchor>По последним данным IRENA,</anchor> за последние два десятилетия мировые мощности по производству энергии ветра на суше и на море выросли почти в 75 раз — с 7,5 ГВт в 1997 году до примерно 564 ГВт к 2018 году.
Wind energy
Wind energy

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![Wind](/-/media/Irena/Modules-Content/Header-Images/Wind-sth-2x-3200x1210.jpg?w=533&h=201&as=1&bc=ffffff&cc=0&hash=8210CE39D251F69DB2647B8A5C775079)

# Wind energy

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4. Wind energy

Wind is used to produce electricity by converting the kinetic energy of air in motion into electricity. In modern wind turbines, wind rotates the rotor blades, which convert kinetic energy into rotational energy. This rotational energy is transferred by a shaft which to the generator, thereby producing electrical energy.

Wind power has grown rapidly since 2000, driven by R&D, supportive policies and falling costs. Global installed wind generation capacity – both onshore and offshore – has increased by a factor of 98 in the past two decades, jumping from 7.5 GW in 1997 to some 733 GW by 2018 according to IRENA’s data. Onshore wind capacity grew from 178 GW in 2010 to 699 GW in 2020, while offshore wind has grown proportionately more, but from a lower base, from 3.1 GW in 2010 to 34.4 GW in 2020. Production of wind power increased by a factor of 5.2 between 2009 and 2019 to reach 1412 TWh.

Both onshore and offshore wind still have tremendous potential for greater deployment and improvement, globally.

As the technology has improved and scaled up, costs have fallen and capacity factors have risen. Between 2010 and 2020, the global weighted-average levelised cost of electricity (LCOE) of onshore wind fell by 56%, from USD 0.089/kWh to USD 0.039/kWh. Over the same period, the LCOE of newly commissioned offshore wind projects fell by around half (48%).

Wind turbine capacity has increased over time. In 1985, typical turbines had a rated capacity of 0.05 MW and a rotor diameter of 15 metres. Today’s new wind power projects have a turbine capacity in the 3-4 MW range onshore and 8-12 MW offshore.

The amount of power that can be harvested from wind depends on the size of the turbine and the length of its blades. The output is proportional to the dimensions of the rotor and to the cube of the wind speed. Theoretically, when wind speed doubles, the wind power potential increases by a factor of eight.

Wind turbines first emerged more than a century ago. Following the invention of the electric generator in the 1830s, engineers started attempting to harness wind energy to produce electricity. Wind power generation took place in the United Kingdom and the United States in 1887 and 1888, but modern wind power is considered to have been first developed in Denmark, where horizontal-axis wind turbines were built in 1891 and a 22.8 metre wind turbine began operation in 1897. The modern wind power sector emerged in the 1980s.

## Wind Energy Data

According to IRENA's latest data, the production of wind electricity in 2016 accounted for a 6% of the electricity generated by renewables. Many parts of the world have strong wind speeds, but the best locations for generating wind power are sometimes remote ones. Offshore wind power offers tremendous potential.

## Investment Trends

## Wind Costs

## Renewable Energy Employment by Country

## Related publications

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[**Utility-scale Solar and Wind Areas: Burkina Faso**](/Publications/2021/Sep/Utility-scale-Solar-and-Wind-Areas-Burkina-Faso)

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[**Offshore Renewables: An Action Agenda for Deployment**](/Publications/2021/Jul/Offshore-Renewables-An-Action-Agenda-for-Deployment)

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[**Tracking the Impacts of Innovation: Offshore wind as a case study**](/Publications/2021/Jun/Impact-of-Innovation-Offshore-wind-case-study)

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[**Utility-scale Solar and Wind Areas: Mauritania**](/Publications/2021/Jun/Utility-scale-Solar-and-Wind-Areas-Mauritania)


[View more](/Publications)

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