blue
business
cable
cloud
colore
communication
connection
construction
danger
electricity
energy
engineering
environment
equipment
forest
frame
fuel
generation
grid
high
high voltage
in
industry
insulation
line
metal
nol
people
power
pylon
road
row
scene
sign
silhouette
single
sky
snow
station
steel
substation
supply
tall
technology
tower
transformer
up
voltage
winter
wire