blue
cable
city
current
danger
death
distribution
electric
electrical
electricity
energetic
energy
engineering
environment
equipment
generator
grid
high
industry
infrastructure
iron
line
metal
plant
pole
poles
post
power
purple
pylon
pylons
risk
silhouette
sky
steel
structure
supply
technology
tower
town
transformer
transmission
utility
violet
volt
voltage
watt
wire