alternative
clean
color
company
contour
countryside
development
ecological
efficiency
electric
electrical
electricity
energy
environmental
equipment
field
flat
free
generate
generator
global
icon
industrial
industry
innovation
isolated
meadow
mill
minimalistic
plant
power
prairie
production
propeller
renewable
resources
rotate
rotation
silhouette
station
supply
technology
tower
turbine
wind
windfarm
windmill
windturbine
wing