attention
banner
blackout
building
cable
catastrophe
city
cityscape
connection
dark
darkness
design
disorder
electric
electrical
electricity
energy
extinct
failure
graphic
hazard
house
icon
illustration
label
light bulb
lightning
night
notice
outage
power blackout
power cut
power out
problem
repair
service
shock
sign
state of emergency
switch off
symbol
town
triangle
trouble
turn off
urban
vector
voltage
warning
yellow