Prototype wind turbines made by different manufacturers operate during testing at the Danish National Test Centre for Large Wind Turbines in Osterild, Denmark. Bloomberg
Solar panels and wind turbines work in an integrated power station in Yancheng city in Jiangsu province, China. AFP
V52-850 kW wind turbines in Lake Turkana, Kenya. Courtesy Vestas Wind Systems A/S
The Dabancheng wind power plant in Urumqi in China's western Xinjiang region. AFP
Wind turbines manufactured by Mingyang Electric whirl to generate electricity at a wind farm on the outskirts of Xinyi city, south China's Guangdong province. AP
GE's Haliade-X offshore turbine prototype. Courtesy GE Renewable Energy
Rotor-blades are pictured at Siemens Wind Power's port of export in Esbjerg. Reuters
An aerial view shows power-generating windmill turbines in a wind farm in Graincourt-les-Havrincourt, France. Reuters
A model of a wind turbine with the Siemens Gamesa logo is displayed outside the annual general shareholders meeting in Zamudio, Spain. Reuters
Wind turbines at an offshore wind farm in China. Bloomberg
Prototype wind turbines made by different manufacturers operate during testing at the Danish National Test Centre for Large Wind Turbines in Osterild, Denmark. Bloomberg
Solar panels and wind turbines work in an integrated power station in Yancheng city in Jiangsu province, China. AFP
V52-850 kW wind turbines in Lake Turkana, Kenya. Courtesy Vestas Wind Systems A/S
The Dabancheng wind power plant in Urumqi in China's western Xinjiang region. AFP
Wind turbines manufactured by Mingyang Electric whirl to generate electricity at a wind farm on the outskirts of Xinyi city, south China's Guangdong province. AP
GE's Haliade-X offshore turbine prototype. Courtesy GE Renewable Energy
Rotor-blades are pictured at Siemens Wind Power's port of export in Esbjerg. Reuters
An aerial view shows power-generating windmill turbines in a wind farm in Graincourt-les-Havrincourt, France. Reuters
A model of a wind turbine with the Siemens Gamesa logo is displayed outside the annual general shareholders meeting in Zamudio, Spain. Reuters
Wind turbines at an offshore wind farm in China. Bloomberg
Prototype wind turbines made by different manufacturers operate during testing at the Danish National Test Centre for Large Wind Turbines in Osterild, Denmark. Bloomberg