My plants are crowding almost every usable window at the moment. It's really funny considering how I keep insisting I don't like to container garden.
Here's an example: The Jalapeno plant and the two sweet pepper plants, as well as the volunteer tomato (I know I didn't mention it before) that I HAD to see what would happen, are flowering on a bench by a 1st floor Southeast kitchen window. The windowsill itself is lined with a scented geranium, 3 pots of parsley, 2 pots citrus seedlings, a pot of hybrid sage cuttings, and a pot of onion bottoms. On the bench immediately below the windowsill where cold air would flow down are 2 pots of 2nd year citrus seedlings, a lime basil that is not liking the cold, the tomato, and large pot of Stavia plant. Along the front edge of the bench, away from the coldest draft are the 3 pots of peppers.
I have a clamp-on metal-hooded utility light fixture with a 100W equivalent CFL pointed at the bench on the end closest to the Jalapeno. The light is turned on in the morning and stays on until I go up to bed. The overhead kitchen table light is turned on at dusk as well. The Jalapeno has one red pepper left from the growing season and one green pepper that grew AFTER being brought inside, and a 1/2 grown green pepper that started growing just before Christmas, and has 5 more flowers and 6 more buds along the way. The one of the tomato flowers has managed to pollinate and there is a pea-sized green tomato on it right now, along with 3 more flowers in the cluster. And one of the sweet pepper plants is quite full of flowers ... let's see 7 open flowers, a couple of spent flowers (no sign of fruit so far) and another 1/2 dozen buds. I paint-brushed the flowers yesterday, in the hopes of helping them pollinate, so we'll see. The other sweet pepper is not doing so well (the leaves look a bit yellowish and limp) but it does have ~8 flower buds on it. I'll have to see if I can get it to perk up so it can manage to flower.
The three pots of rosemary are on a table in front of the 1st floor Southwest window -- no direct artificial lights, but it IS in the family room so, FWIW, lights go on at dusk and stay on until everyone goes to bed.
I have other more, tropical plants by the 2nd floor
Southeast windows where it's a few degrees warmer. They also have clamp-on CFL's on them from morning until bed time to supplement the weak winter daylight. These aren't on timers so the lighting schedule is not set and isn't always turned on, but turning on/off the lights is part of my daily misting routine.