3d
accumulator
alkaline
alternative
blue
bolt
bulb
button
charge
charger
circle
coal
eco
ecology
electric
electrical
electricity
energy
environment
equipment
factory
fuel
full
green
icon
illustration
industrial
industry
isolated
isometric
lamp
led
light
lightning
metal
plant
power
recharge
set
sign
station
supply
symbol
technology
turquoise
voltage