black
blue
cable
construction
current
danger
distribution
dusk
electric
electrical
electricity
energy
engineering
environment
equipment
evening
frame
generation
generator
grid
high
industrial
industry
line
metal
nobody
orange
plant
pole
pollution
power
pylon
silhouette
sky
station
steel
structure
sun
sunrise
sunset
supply
tall
technology
tower
transformer
transmission
volt
voltage
watt
wire