blue
cable
circuit
clear
connection
current
danger
distribution
efficiency
electric
electrical
electricity
energy
environment
equipment
factory
generation
generator
high
industrial
industry
infrastructure
insulation
insulator
line
metal
plant
pole
power
production
pylon
row
sky
station
steel
structure
substation
supply
tall
technology
tower
transformer
transmission
utility
voltage
volts
warning
wire