Lighting on surface-level and higher buildings is pretty easy (with good tools). Demolish a window or a door of your building. Park a salvaged vehicle next to it or construct a wheel-less “vehicle” if you’re working on a second-story project. Weld on a series of Frames through the gap. Put a Door on the gap frame, aisles (or various vehicle work stations) on the other frames, and headlights or floodlights where you want light. Power the vehicle with enough wind and/or solar and you’ll be good to go for as long as you keep the base.
Underground light and power are harder. You’ll have to refuel whatever you’re using, whether it’s a fireplace, oil lamp, flashlight, fuel-powered “vehicle”, or “vehicle” running on batteries that you charge upstairs with solar and wind. Fireplaces work better now than they used to for this - as long as you have access to lots of wood, you can light fires that last all day without tending.
Atomic lamps and turrets are another viable option for permanent lighting, but hard to come by.
Hopefully at some point we’ll have the ability to connect power sources and power sinks directly to walls and roof tiles, but I’m definitely not up to coding it, so I’m not going to get on anybody else for not wanting to, either. 
If you get sick of it, you can always just build a bunch of wind turbines, drop them on the roof, throw a bunch of copper wire and light bulbs into a lake, and use the cheat menu to spawn overhead lights. 
