alternative
blade
blue
eco
ecological
ecology
electrical
electricity
energy
environment
environmentally
farm
field
fossil
friendly
fuel
generate
generating
generation
generator
green
grid
industry
metal
mill
nature
network
power
propeller
protected
renewable
rotating
rotation
safe
service
sky
spin
spring
stand
summer
turbine
utility
vista
watts
white
wind
windmill
windturbine
wings