blue
cable
circuit
connection
construction
current
danger
dangerous
direct
distribution
efficiency
electric
electrical
electricity
energy
engineering
equipment
generation
generator
global
heavy
high
horizontal
icon
industrial
industry
infrastructure
insulation
insulator
line
network
plant
power
production
row
sending
sky
station
steel
strong
substation
supply
tall
technology
tower
transformation
transformer
transmission
voltage
wire