blue
business
cables
conductor
current
electric
electrical
electricity
energy
engineering
equipment
fast
field
framework
generator
grid
high
industrial
industry
light
line
megawatts
metal
metro
motion
movement
network
pillar
platform
pole
post
power
powerlines
railroad
sky
speed
station
subway
supply
technology
tension
tower
train
transformer
transmission
voltage
volts
watts
wire
wiring