Yes. But not if you set up a timer to do it automatically. (As long as you set up the timer before shabat obviously)
There is also apparently a slightly more technologically minded sub-sect of Judaism which considers only electricity generators that actually burn things (coal, oil, gas, biomass, etc) to be "fire". Battery powered devices are therefore OK, as would be things purely powered by solar power (as the sun is technically not "on fire") nucear power or even hydroelectric power. For the vast majority of electricity grids though, at least a percentage of generation will be from fueled generators and so forbidden on shabat.
