alarm
blue
business
cable
carry
connection
copy space
crisis
current
danger
distribution
electric
electrical
electricity
energetic
energy
engineer
engineering
expensive
first
high
home
house
illumination
industrial
industry
inexpensive
kilowatt
light
line
low
metal
need
pole
politics
poverty
power
sky
social
steel
structure
supply
technology
tower
transformer
transmission
transportation
voltage
watt
wire