background
blue
bright
cable
cloud
communication
construction
danger
dawn
distribution
dusk
electric
electrical
electricity
energy
engine
engineering
environment
equipment
evening
generator
grid
high
industrial
industry
infrastructure
line
lines
metal
network
orange
power
pylon
silhouette
sky
steel
structure
sun
sunrise
sunset
supply
tall
technology
tower
transmission
volt
voltage
watt
wire
yellow