cable
danger
distribution
dusk
eco
electric
electrical
electricity
energy
engineering
environment
environmental
evening
frame
framework
generator
global
harm
high
industrial
industry
line
network
orange
plant
pollution
power
progress
pylon
red
resource
silhouette
sky
station
steel
sun
sunlight
sunrise
sunset
supply
tall
technology
tower
transmission
twilight
volt
voltage
watt
wire
yellow