We have LEDs and CFLs in our house. All lights combined consume as much power as heating water for 3-4 cups of coffee, baking half a bread, or pumping the water for a single shower...
6 PM likely depends on your location... It's 10 PM here, the lights are still off, because the sun hasn't completely disappeared yet. It'll be different in a few months when it'll be completely dark by 4 PM. ;-)