The screenshot below shows a steam turbine (coal + water=steam... electricity), the lowest tier of electric generators. The electric is them beamed to any device/machine that requires electric, in this case a floodlight is drawing 2 KW from the generator. So far it's working very well and looks great.
There is a range, so you can't just beam power 5 miles away! But I will add some sort of "node" that could carry power around your colony. It's not really needed with a small generator, but larger, more powerful generators will provide lots more power, so will need some way to deliver over longer distances.
Also in this screenshot you can see floor tiles can be laid down, just for decoration and help plan layout I guess. So far there's a gravel tile, stone slab, wood and brick tile.