Vestas Wind Systems A/S is a Danish manufacturer, seller, installer, and servicer of wind turbines that was founded in 1945.

The company operates manufacturing plants in Denmark, Germany, India, Italy, Romania, the United Kingdom, Spain, Sweden, Norway, Australia, China, Brazil and the United States, and employs more than 24,400 people globally. 

As of 2013, it is the largest wind turbine company in the world.

As of 2019 Vestas has installed over 66,000 wind turbines for a capacity of 100 GW in over 80 countries on five continents. As of 9 January 2019 the company has built production facilities in more than 12 countries, among them China, Spain and the United States. 

According to en.wikipedia