100% renewable and eco-friendly – how green electricity is generated in a wind power plant 3 minutes spent reading

100% renewable and eco-friendly – how green electricity is generated in a wind power plant

Thais Kohn

Villares Metals is committed to providing solutions for the wind power market, supplying forged flanged shafts.

wind energy

Wind turbines transform wind into electrical energy, and are an alternative to fossil fuels.

A focus on environmental issues and a commitment to sustainability are becoming ever more important in a world which is increasingly globalized, competitive, and constantly in flux. Villares Metals is an active player in the wind energy supply chain, a clean and renewable resource of energy, and one which neither emits greenhouse gases, nor generates waste.


Electricity generated by the wind is fed into power grids in more than 80 countries. By the end of 2014, 24 countries already enjoyed over 1,000 MW of installed capacity. Wind power now generates around 3% of the world’s electricity, and this figure is expected to rise to over 15% by 2030. Denmark is the country which currently relies most on wind power as a source of energy; almost 40% of the total energy it consumes is generated using wind.

Wind farms are built in regions with an abundance of strong and constant wind, and increasingly in offshore environments. Numerous factors must be considered when selecting a suitable location for a wind farm and the appropriate model of wind turbine:

  • climate conditions including wind strength and direction
  • the building site morphology, and
  • proximity to the point of consumption or the power grid must all be carefully analyzed.

Wind turbines are large and solid constructions, some reaching over 200 meters height and weighing around 800 tons.

Most traditional wind turbines have a horizontal axis and three rotating blades. They are more technically developed than other types of turbine and are considered the most appropriate model for generating industrial quantities of power. Today’s wind turbines can reach outputs of up to 10 MW.

How do wind turbines transform wind into electrical energy?

The magic takes place at the top of the tower which houses:

Forged flanged shaft

Forged flanged shaft produced by Villares Metals.

  • Measuring equipment
  • Blades
  • Hub
  • Nacelle: main shaft, gear boxes, generator, cooling system, and control panel.

The measuring equipment calculates the wind speed and direction. This is used to determine the optimal position for the blades which are subsequently moved to the correct direction and angle in order to extract as much energy as possible from the wind.

The blades are connected to the hub and transfer the wind power, in the form of mechanical energy, to a bearing attached to the main shaft. This, in turn, is linked to a gear box which transmits the mechanical energy to a generator which transforms it into electrical energy.

The need to seek sustainable solutions to meet rising levels of power consumption heralds significant growth worldwide in this sector over the coming years. Villares Metals is committed to providing solutions for this market, supplying forged flanged shafts for hub fabrication, as well as shafts for generators and gear boxes.