alternative
background
black
bladed
blue
bright
button
clean
curve
design
eco
ecology
electric
electricity
energy
environment
farm
fuel
generation
generator
green
icon
illustration
industry
isolated
logo
mill
modern
nature
power
reflection
renewable
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shadow
shiny
sign
silhouette
simple
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symbol
technology
tower
turbine
vector
vibrant
white
wind
windfarm
windmill
yellow