blue
cable
communications
conductor
construction
current
electric
electrical
electricity
energetics
energy
engineering
environment
equipment
framework
generator
grid
high
high tension
industrial
industry
infrastructure
insulation
light
line
main
metal
network
pillar
plant
pole
post
power
pylon
sky
steel
substation
supply
technology
tension
tower
transformer
transmission
volt
voltage
volts
wind
wire
wiring