actual
alternative
blade
blue
bright
clean
cloud
clouds
cloudy
copyspace
countryside
development
ecological
ecology
efficiency
electric
electrical
electricity
energy
environment
environmental
farm
generation
generator
green
greenhouse effect
horizontal
idyllic
industrial
innovation
innovative
mill
modern
new
plant
production
propeller
renewable
rolling
rotate
rotation
single
sky
spin
station
sunny
sustainability
sustainable
system
technology
turbine
white
wind
windfarm
windmill