This is the Szybjki tryb włączony icon for Windows 10. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.
It's the picture of a lightning bolt to indicate electricity. It is a single bolt of lightning, with no clouds or other features. It looks like the image of an hourglass, tilted about 45 degrees up, and then stretched out until it resembles a lightning bolt.