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