PNG ICO ICNS MORE
Computer & hardware
Smooth
Crystal Project
power
SlateGray
32x32
Photography & graphic design
3D
Dark Glass
Battery, power, Energy
Black
128x128
Energy, power
Full, Energy, Battery
LightGreen
lightning, power, Disk
DarkSlateGray
half, Battery, power
power, Battery
lightning, quick, restart
SaddleBrown
Futurosoft
power, lightning, Winamp
Gold
power, Battery, charged
power, Print
UI
Glaze
quick, lightning, power
Silver
64x64
Network & communications
Oxygen
Light bulb, Idea, power
power, printer
WhiteSmoke
48x48
Pixel
ASP.NET icons
power, Connect
DarkGreen
16x16
Connect, Cable, power
power, Connect, lightning
power, lightning, Connect
power, Disconnect, Cable
OrangeRed
Desktop apps
Circular
power, on, off
Firebrick
power, on
LimeGreen
Mixed
Web Application Icons Set
power, Exit
Fugue Icons
Control, power
SteelBlue
power, Control