blue
built
cable
construction
current
danger
distribution
electric
electrical
electricity
energetic
energy
engine
engineering
environment
equipment
evening
generation
generator
grid
high
industrial
industry
line
lines
metal
network
plant
pole
power
powerful
pylon
silhouette
sky
station
steel
structure
substation
sunrise
sunset
supply
tall
technology
tower
transformer
transmission
volt
voltage
watt
wire