alternative
blade
blue
clean
conservation
development
ecological
ecology
efficiency
electric
electrical
electricity
emotive
energy
environment
environmental
farm
field
generation
generator
grass
grassland
green
industrial
industry
innovation
innovative
landscape
meadow
mill
modern
nature
plant
power
production
renewable
resource
rolling
sky
space
station
summer
sustainability
sustainable
technology
turbine
white
wind
windfarm
windmill