background
blue
cable
construction
current
danger
distribution
electric
electrical
electricity
energetic
energy
engineering
environment
equipment
fence
field
frame
generation
geometric shapes
grid
hazardous
high
industrial
industry
infrastructure
iron
keep out
line
megawatt
metal
network
power
pylon
silhouette
sky
station
steel
structure
supply
technology
tower
transformer
transmission
utilities
voltage
volts
watt
wire