cable
chimney
circuit
coal
construction
current
dangerous
distribution
electric
electrical
electricity
energy
environment
factory
fuel
gas
generation
generator
grid
hazard
hazardous
high
highvoltage line
hydro
industrial
industry
line
metal
pole
power
refinery
sky
smoke
station
steam
steel
structure
supply
technology
transformation
transformer
transmission
volt
voltage
wire