air
alternative
blade
blue
bright
clean
clear
cloud
color
conservation
day
development
efficiency
electric
electricity
energy
environment
environmental
equipment
farm
generate
generation
generator
green
industrial
industry
innovation
light
mill
nature
plant
power
propeller
renewable
rotate
rotating
rotation
sky
stand
station
summer
sunlight
supply
technology
tower
watts
white
wind
wind turbine
windmill