wind power
風力
alternative
alternative energy
blue
cloud
cloudscape
conservation
ecologic
ecology
efficiency
electric
electricity
energy
environment
environmental
farm
generate
generation
generator
generators
global
green
industrial
industry
landscape
nature
power
propeller
renewable
renewable energy
renewable power
sky
source
supply
sustainability
sustainable
technology
tower
turbine
turbines
warming
wind
wind farm
wind turbine
windfarm
windmill